Crash Data Presentation NAPARS Crash Conference

Size: px
Start display at page:

Download "Crash Data Presentation NAPARS Crash Conference"

Transcription

1 Crash Data Presentation NAPARS Crash Conference Jeremy Daily, Ph.D., P.E. Associate Professor of Mechanical Engineering 12 September 2014 Portland Maine

2 Consortium Website Credentials User: TUCRRCmember Password: TUCRRCpassword Crash Test Data from all Consortium Run Tests Research Topics of Interest Crash Data Vehicle Networks Event Data Recorders YouTube Videos Channel = TheTUCRRC NAPARS

3 CRASH TEST SUMMARY NAPARS

4 Crash Test 1 Subaru head-on into stationary Buick near head-on. NAPARS

5 Crash 1 Summary Data Subaru Impact Speed egps: 40.5 mph Vbox: mph Post Impact Speed Vbox: 17 mph Delta-V Accelerometer: Speed Differences: dv=23 Buick Stationary at Impact Pull In Impact Rollout NAPARS

6 Post Impact Rollout Rollout Drag Factor Rollout Point 1: t1= S1=14.63 Point 2: t2= S2= NAPARS

7 Crash Test 2 Saturn Ion (#2) vs Saturn L300 (#1) NAPARS

8 Crash 2 Summary Data Saturn L300 (#1) Impact Speed Video Vbox: mph egps: 39.9 mph Delta V Accelerometer: EDR: Saturn Ion (#2) Impact Speed Vbox 3i: 39.5 mph egps: 39.7 mph Delta V Accelerometer: mph EDR: mph NAPARS

9 Crash Test 3 Volkswagen into Stationary Volvo with 50% overlap. NAPARS

10 Crash 3 Summary Data Volkswagen Speed at Impact Vbox 3i: mph egps: mph Delta V Accelerometer: -20 mph Volvo Stationary at Impact Delta V: -20 Mph edaq_setup_napars2014(1).sie - GPS@speed_3d.RN_2 x: y:78.06 n: speed_3d(km/h) Time(secs) NAPARS

11 CRASH TESTING INSTRUMENTATION NAPARS

12 Racelogic VBox 3i 100Hz GPS system Serial communication Compact flash logging Brake trigger IMU Tri-axial accelerometer Tri-axial gyroscope NAPARS

13 Racelogic Video VBox 10Hz/20Hz GPS system 4 Cameras Microphone Compact flash logging NAPARS

14 Instruments egps-200plus Combines data from 2 GPS antennas an IMU, and RTK units to provide several measurements at a rate of up to 200Hz Measurements Acceleration (All 3 axis) Angular velocity (All 3 Axis) Speed Heading, altitude, longitude Slip angle NAPARS

15 Instruments Accelerometer Tri-axial measurements 70gs 10,000 Hz bandwidth Gyroscope Tri-axial measurements 600 deg/s rates 400 Hz bandwidth NAPARS

16 edaq Data Acquisition Rugged system designed for use in harsh environments Enables simultaneous and synchronous recording of multiple channels with different types of instruments Convenient data recording modes Simple interface NAPARS

17 edaq 4 Layers DIO HLS Digital I/O High level analog ECOM Vehicle network communications NAPARS

18 edaqlite 4 Layers ELBRG Bridge HLS High level analog ECOM Vehicle network communications NAPARS

19 edaq Data Recording Modes Time history Records continuously Burst history Buffer data Records data in a predefined interval Simplifies data processing NAPARS

20 Obtaining Vehicle Weights Weighing the Volvo with Pad Scales NAPARS 2014 Data Read out 20

21 Louis Peck, M.S.M.E. ACTAR #1663 Lightpoint Data PHOTOGRAMMETRY NAPARS

22 Background NAPARS

23 Background NAPARS

24 Background NAPARS

25 Background NAPARS

26 Expected Accuracy Bryan Randles, et al (SAE ) 95% of hands-on measurements found to be within 5% of actual measurement. 95% of photogrammetry measurements found to be within 3% of actual measurement. NAPARS

27 Crash Test 3 NAPARS

28 Crash Test 3 NAPARS

29 Crash Test 3 NAPARS

30 Crash Test 3 NAPARS

31 Crash Test 3 NAPARS

32 Crash Test 3 NAPARS

33 Crash Test 3 NAPARS

34 Weights (near as tested) Vehicle Total (lb) LF (lb) LR (lb) RF (lb) RR (lb) Buick (#3) - Stationary Subaru (#5) Moving Saturn L300 (#1) Saturn Ion (#2) Volvo 960 (#4) Volkswagen (#7) NAPARS

35 AIR BAG CRASH DATA NAPARS

36 Buick CDR Data Stationary Vehicle Timing Values are not true values NAPARS

37 NAPARS

38 Buick CDR Data Delta-V = mph NAPARS

39 Crash Test 2: Saturn L300 (#1) NAPARS

40 Saturn Ion (#2) NAPARS

41 Jeremy Daily on CRASH DATA FROM INSTRUMENTS NAPARS

42 Saturn L300 Speed 70 edaq_setup_napars2014.sie - GPS@speed_3d.RN_1 x: y:64.34 n: speed_3d(km/h) Time(secs) NAPARS

43 Saturn Ion Speed 70 edaqlite_napars2014(1).sie - egps@speed_3d.rn_1 x: y:63.94 n: speed_3d(km/h) Time(secs) NAPARS

44 SAE Sign Convention NAPARS

45 Accelerometer Data Accelerometers were located in the passenger rear floor board area. The data presented is for the accelerometer, not the center of mass. Rotational effects can be significant. deg/s rad/s. With a 5 ft distance from the pivot, g s NAPARS

46 Accelerometer Locations High G Accelerometer and Rate Gyro egps (200 Hz) Inertial Measurement Unit NAPARS

47 Crash 1: Subaru Acceleration accel_x_05(g) edaqlite_subaru_napars CT sif - IMU@accel_x_05.RN_2 x: y: n: edaqlite_subaru_napars CT sif - egps@speed_3d.rn_2 x: y:64.61 n:22912 speed_3d(km/h) Time(secs) NAPARS

48 Subaru Delta V = Calculator_00217.sif - Computed from X Accelerometer x: y: n:41 x: y: dx: Delta V(mph) Time(secs) NAPARS

49 Buick Acceleration NAPARS

50 Crash Test 2 NAPARS

51 Saturn L300 Acceleration 80 edaq_setup_napars2014.sie - IMU_data@Accel_X_06.RN_ Accel_X_06(g) Time(secs) NAPARS

52 Saturn L300 Delta V ~ 36 mph 5 Calculator_00210.sif - Computed from X Accelerometer x: y: n:9 x: y: dx: Delta V(mph) Time(secs) NAPARS

53 Saturn Ion Acceleration 40 edaqlite_napars2014(1).sie - IMU@accel_x_05.RN_ accel_x_05(g) Time(secs) NAPARS

54 Crash 2: Saturn Ion Delta V = -41 mph 10 Calculator_00211.sif - Computed from X Accelerometer x: y: n:111 x: y: dx: Delta V(mph) Time(secs) NAPARS

55 Crash 2: Saturn Ion Yaw Rate 100 edaqlite_napars2014(1).sie - IMU@Yaw_47.RN_ Yaw_47(deg/s) Time(secs) NAPARS

56 Crash 2: Saturn Ion Angle of Rotation 20 Calculator_00213.sif - Angle of Rotation x: y: n:776 x: y: dx: Rotation(degrees) Time(secs) NAPARS

57 Crash 2: Saturn L300 Yaw Rate 350 edaq_setup_napars2014.sie - IMU_data@Yaw_48.RN_ Yaw_48(deg/sec) Time(secs) NAPARS

58 Crash 2: Saturn L300 Angle of Rotation 10 Calculator_00214.sif - Rotation Angle x: y: n:53 x: y: dx: DummyLabel(degrees) Time(secs) NAPARS

59 Damage Energy Inputs EDCRASH (Crash III Algorithm) NAPARS

60 Crash 2 Vehicle Data NAPARS

61 Compare to Damage Energy NAPARS

62 Compare to Damage Energy -36 mph from Accelerometer -41 mph from Accelerometer NAPARS

63 DVIII on using StifCalcs NAPARS

64 Crash Data CRASH 3: VOLKSWAGEN INTO VOLVO NAPARS

65 Crash Data for Stationary Volvo (Crash 3) accel_x_05(g) edaqlite_napars2014(2).sie - IMU@accel_x_05.RN_ Time(secs) NAPARS

66 Crash 3 Volvo Delta V ~ 20 mph 5 Calculator_00205.sif - Computed from X Accelerometer x: y: n:149 x: y: dx: d 0-5 Delta V(mph) Time(secs) NAPARS

67 Crash 3 - Volkswagen Accel_X_06(g) Yaw_48(deg/sec) speed_3d(km/h) edaq_setup_napars2014(1).sie - IMU_data@Accel_X_06.RN_2 edaq_setup_napars2014(1).sie - IMU_data@Yaw_48.RN_2 edaq_setup_napars2014(1).sie - GPS@speed_3d.RN_2 x: y: n: x: y: n: x: y:78.25 n: Time(secs) NAPARS

68 Crash 3 - Volkswagen 80 edaq_setup_napars2014(1).sie - IMU_data@Accel_X_06.RN_ Accel_X_06(g) Time(secs) NAPARS

69 Crash 3: Volkswagen Delta V = 20 mph 5 Calculator_00209.sif - Computed from X Accelerometer x: y: n:26 x: y: dx: Delta V(mph) Time(secs) NAPARS

70 Compare to Damage Energy NAPARS

71 Compare to Damage Energy NAPARS

72 Crash Test #3 Profiles NAPARS

73 Crash #3 Results Using Damage Energy work provided good inputs and valid range. NAPARS

74 Special Thanks Mark Sole Wade Bartlett Dan Vomhof Ron Baade Rick McAlister Chip Gordon Hugh Beam Angela Porter Tom Garrepy Mike Pion Joe Salinas Duane Meyers Maine State Police NAPARS

75 Consortium Website All data from crash testing and this presentation will be available at Credentials User: TUCRRCmember Password: TUCRRCpassword NAPARS

76 Safe Travels. THANK YOU NAPARS

Heavy Vehicle Event Data Recorders. NTSS

Heavy Vehicle Event Data Recorders. NTSS Heavy Vehicle Event Data Recorders NTSS 2013 http://tucrrc.utulsa.edu 1 HOW EVENTS GET SET IN AN ENGINE CONTROL MODULE NTSS 2013 http://tucrrc.utulsa.edu 2 Overview Vehicle Speed Data Vehicle Networking

More information

Preliminary Study of the Response of Forward Collision Warning Systems to Motorcycles

Preliminary Study of the Response of Forward Collision Warning Systems to Motorcycles Preliminary Study of the Response of Forward Collision Warning Systems to Motorcycles Vorläufige Studie über Kollisionswarnsysteme mit Blick auf Motorräder John F. Lenkeit, Terrance Smith PhD Dynamic Research,

More information

Oversteer / Understeer

Oversteer / Understeer Abstract An important part of tyre testing is the measurement of tyre performance in respect to oversteer and under steer. Over or Understeer results from a number of factors including cornering speed,

More information

Miniature Aerial Vehicle. Lecture 4: MEMS. Design Build & Fly MIT Lecture 4 MEMS. IIT Bombay

Miniature Aerial Vehicle. Lecture 4: MEMS. Design Build & Fly MIT Lecture 4 MEMS. IIT Bombay Lecture 4 MEMS MEMS Micro Electrical Mechanical Systems Practice of making and combining miniaturized mechanical and electrical components Micromachines in Japan Microsystems Technology in Europe MEMS

More information

Drag Factors in Spins and on Hills

Drag Factors in Spins and on Hills Drag Factors in Spins and on Hills John Daily Jackson Hole Scientific Investigations, Inc. Box 2206 Jackson, WY 83001 (307) 733-4559 jhsi@rmisp.com Drag Factor Adjustment Adjusting the drag factor for

More information

Robustness to unintended ignition key rotation with key ring only

Robustness to unintended ignition key rotation with key ring only Robustness to unintended ignition key rotation with key ring only GM North American Engineering Joe Fedullo Ali Seyam 5/6/14 Data collected 2/24/14 4/3/14 5/6/2014 Summary_5_16_14.pptx 1 Robustness to

More information

To put integrity before opportunity To be passionate and persistent To encourage individuals to rise to the occasion

To put integrity before opportunity To be passionate and persistent To encourage individuals to rise to the occasion SignalQuest, based in New Hampshire, USA, designs and manufactures electronic sensors that measure tilt angle, acceleration, shock, vibration and movement as well as application specific inertial measurement

More information

Rule 563 Issued August 2006, effective 09/01/2010 No new tests FMVSS 208: Frontal up to 35mph, Offset 25mph 214: Lateral crabbed MDB 33.5mph Record da

Rule 563 Issued August 2006, effective 09/01/2010 No new tests FMVSS 208: Frontal up to 35mph, Offset 25mph 214: Lateral crabbed MDB 33.5mph Record da EDR Durability and 49CFR563 Presented by: Wade Bartlett, PE January 19-21, 2007 Houston Texas Outline EDR Survivability Requirements in Rule 563 EDR requirements in other transport modes Component tolerance

More information

Deceleration Rates of Vehicles with Disabled Tires

Deceleration Rates of Vehicles with Disabled Tires Deceleration Rates of Vehicles with Disabled Tires 2017-01-1427 Daniel Koch, Gray Beauchamp, and David Pentecost Kineticorp LLC Published 03/28/2017 CITATION: Koch, D., Beauchamp, G., and Pentecost, D.,

More information

Pedestrian Autonomous Emergency Braking Test Protocol (Version II) February 2019

Pedestrian Autonomous Emergency Braking Test Protocol (Version II) February 2019 Pedestrian Autonomous Emergency Braking Test Protocol (Version II) February 2019 Contents DOCUMENT REVISION HISTORY... ii SUMMARY... 1 TEST ENVIRONMENT... 2 Surface and Markings... 2 Surroundings... 2

More information

Pedestrian Autonomous Emergency Braking Test Protocol (Version 1) December 2018

Pedestrian Autonomous Emergency Braking Test Protocol (Version 1) December 2018 Pedestrian Autonomous Emergency Braking Test Protocol (Version 1) December 2018 Contents DOCUMENT REVISION HISTORY... ii SUMMARY... 1 TEST ENVIRONMENT... 1 Surface and Markings... 1 Surroundings... 2 Ambient

More information

EDR Report Information

EDR Report Information EDR Report File Information Value VIN 5YJSA1H21EFP00000 Retrieval Date 2018/01/01 00:00:00 (UTC) Retrieval User Comments Sample Tesla Model S EDR Retrieval Program Information EDR Report Information Tesla

More information

United States Code of Federal Regulations Title 49 Part 563

United States Code of Federal Regulations Title 49 Part 563 United States Code of Federal Regulations Title 49 Part 563 EVENT DATA RECORDERS. 563.1 Scope 563.2 Purpose 563.3 Application 563.4 Incorporation by reference 563.5 Definitions 563.6 Requirements for vehicles

More information

A STUDY OF HUMAN KINEMATIC RESPONSE TO LOW SPEED REAR END IMPACTS INVOLVING VEHICLES OF LARGELY DIFFERING MASSES

A STUDY OF HUMAN KINEMATIC RESPONSE TO LOW SPEED REAR END IMPACTS INVOLVING VEHICLES OF LARGELY DIFFERING MASSES A STUDY OF HUMAN KINEMATIC RESPONSE TO LOW SPEED REAR END IMPACTS INVOLVING VEHICLES OF LARGELY DIFFERING MASSES Brian Henderson GBB UK Ltd, University of Central Lancashire School of Forensic & Investigative

More information

Virginia Department of Transportation

Virginia Department of Transportation TEST REPORT FOR: Virginia Department of Transportation SKT SP 350 50 (15.24 m) System PREPARED FOR: Virginia Department of Transportation 1401 E. Broad St. Richmond, VA 23219 TEST REPORT NUMBER: REPORT

More information

What it is and what it can do for you. Presented by: Dustin Donaldson ACTAR #

What it is and what it can do for you. Presented by: Dustin Donaldson ACTAR # What it is and what it can do for you Presented by: Dustin Donaldson ACTAR #2292 417-234-1303 crashrecon@gmail.com Who am I? Hired on with SPD in 2002 Assigned to Traffic Section in 2006 Attended specialty

More information

The Heart of Passive Safety (Electronics) is Still Beating. Tom Borninski Autoliv Electronics America

The Heart of Passive Safety (Electronics) is Still Beating. Tom Borninski Autoliv Electronics America The Heart of Passive Safety (Electronics) is Still Beating Tom Borninski Autoliv Electronics America Passive Safety and Our Naming Problem With ~15 years and many millions of these hearts of passive safety

More information

e-cfr Data is current as of October 31, 2012

e-cfr Data is current as of October 31, 2012 Page 1 of 11 ELECTRONIC CODE OF FEDERAL REGULATIONS e-cfr Data is current as of October 31, 2012 Title 49: Transportation PART 563 EVENT DATA RECORDERS Contents 563.1 Scope. 563.2 Purpose. 563.3 Application.

More information

UAV KF-1 helicopter. CopterCam UAV KF-1 helicopter specification

UAV KF-1 helicopter. CopterCam UAV KF-1 helicopter specification UAV KF-1 helicopter The provided helicopter is a self-stabilizing unmanned mini-helicopter that can be used as an aerial platform for several applications, such as aerial filming, photography, surveillance,

More information

FORCE SENSORS FORCE SENSORS

FORCE SENSORS FORCE SENSORS FORCE SENSORS We are a pioneer in the design and manufacture of precision force sensors for applications that require high performance or unique packaging, including electromechanical flight control, test

More information

STICTION/FRICTION IV STICTION/FRICTION TEST 1.1 SCOPE

STICTION/FRICTION IV STICTION/FRICTION TEST 1.1 SCOPE Page 1 of 6 STICTION/FRICTION TEST 1.0 STICTION/FRICTION TEST 1.1 SCOPE Static friction (stiction) and dynamic (running) friction between the air bearing surface of sliders in a drive and the corresponding

More information

OBI-M2. Compact and Rugged Combustion Analysis System for use on Vehicles, Motorbikes and Test Benches

OBI-M2. Compact and Rugged Combustion Analysis System for use on Vehicles, Motorbikes and Test Benches OBI-M2 Compact and Rugged Combustion Analysis System for use on Vehicles, Motorbikes and Test Benches OBI-M2 is an extremely compact and fully featured combustion analysis system suitable for use on test

More information

Pothole Tracker. Muhammad Mir. Daniel Chin. Mike Catalano. Bill Quigg Advisor: Professor Ciesielski

Pothole Tracker. Muhammad Mir. Daniel Chin. Mike Catalano. Bill Quigg Advisor: Professor Ciesielski Pothole Tracker Muhammad Mir. Daniel Chin. Mike Catalano. Bill Quigg Advisor: Professor Ciesielski Pothole Tracker Muhammad Mir CSE Team 5 Daniel Chin CSE Mike Catalano EE Bill Quigg EE Why are Potholes

More information

BASIC MECHATRONICS ENGINEERING

BASIC MECHATRONICS ENGINEERING MBEYA UNIVERSITY OF SCIENCE AND TECHNOLOGY Lecture Summary on BASIC MECHATRONICS ENGINEERING NTA - 4 Mechatronics Engineering 2016 Page 1 INTRODUCTION TO MECHATRONICS Mechatronics is the field of study

More information

Vehicle CAN Database. Porsche Cayman GT4 Clubsport with CAN Gateway

Vehicle CAN Database. Porsche Cayman GT4 Clubsport with CAN Gateway Vehicle CAN Database Porsche Cayman GT4 Clubsport with CAN Gateway Overview Racelogic have acquired CAN signals for customers to use with VCI (Vehicle CAN Interface) products. This information is available

More information

Application of Steering Robot in the Test of Vehicle Dynamic Characteristics

Application of Steering Robot in the Test of Vehicle Dynamic Characteristics 3rd International Conference on Mechatronics, Robotics and Automation (ICMRA 2) Application of Steering Robot in the Test of Vehicle Dynamic Characteristics Runqing Guo,a *, Zhaojuan Jiang 2,b and Lin

More information

Accident Reconstruction & Vehicle Data Recovery Systems and Uses

Accident Reconstruction & Vehicle Data Recovery Systems and Uses Research Engineers, Inc. (919) 781-7730 7730 Collision Analysis Engineering Animation Accident Reconstruction & Vehicle Data Recovery Systems and Uses Bill Kluge Thursday, May 21, 2009 Accident Reconstruction

More information

force/torque solutions by sensor type

force/torque solutions by sensor type force/torque solutions by sensor type Measurement Specialties is a pioneer in the design and manufacture of force/t precision sensors for electro-mechanical flight control applications, test and measurement

More information

100+ MILLION EUROS OF TURNOVER 600+ EMPLOYEES 80% OF TURNOVER ACHIEVED ABROAD 20% OF TURNOVER REINVESTED EACH YEAR IN R&D. ixblue at a glance

100+ MILLION EUROS OF TURNOVER 600+ EMPLOYEES 80% OF TURNOVER ACHIEVED ABROAD 20% OF TURNOVER REINVESTED EACH YEAR IN R&D. ixblue at a glance MOTION SIMULATORS ixblue stands as a global leader in the design and manufacturing of innovative solutions for navigation, positioning and acoustic imaging markets. The French Group offers its unique advanced

More information

Collecting In-theatre Vehicle Blast Data using Stand-alone On-board Data Acquisition Technology

Collecting In-theatre Vehicle Blast Data using Stand-alone On-board Data Acquisition Technology Collecting In-theatre Vehicle Blast Data using Stand-alone On-board Data Acquisition Technology Allen Vanguard s Blackbird: A Vehicle Mounted Blast Data Acquisition System ALLENVANGUARD 2010 Authored by:

More information

TEST REPORT No. 2 ALUMINUM BRIDGE RAIL SYSTEMS. Prepared for. The Aluminum Association Inc. 818 Connecticut Avenue Washington, D.C.

TEST REPORT No. 2 ALUMINUM BRIDGE RAIL SYSTEMS. Prepared for. The Aluminum Association Inc. 818 Connecticut Avenue Washington, D.C. TEST REPORT No. 2 ALUMNUM BRDGE RAL SYSTEMS Prepared for The Aluminum Association nc. 818 Connecticut Avenue Washington, D.C. 26 by C. E. Buth Research Engineer G. G. Hayes Assoc. Research Physicist and

More information

Appendix D. Figure D-1. ENCLOSURE 1 (4 Pages) SafeGuard TM Gate System

Appendix D. Figure D-1. ENCLOSURE 1 (4 Pages) SafeGuard TM Gate System Appendix D Figure D-1 SafeGuard TM Gate System ENCLOSURE 1 (4 Pages) Appendix D (Continued) Figure D-4 SafeGuard TM Gate System Appendix D (Continued) Figure D-9 SafeGuardTM Gate System Page D-9 Figure

More information

VIBRATION SENSORS VIBRATION SENSORS

VIBRATION SENSORS VIBRATION SENSORS VIBRATION SENSORS TE has spent more than 20 years designing and manufacturing s based on our proprietary Microelectromechanical System (MEMS), bonded gage and piezoelectric ceramic/film technologies. Voltage

More information

P/N VEHICLE DYNAMICS MODULE

P/N VEHICLE DYNAMICS MODULE Instruction Manual P/N 0-220 VEHICLE DYNAMICS MODULE STOP! - READ THIS BEFORE INSTALL OR USE! WARNING: THIS INSTALLATION MAY REQUIRE WELDING OR INTEGRATION INTO A VEHICLE'S ELECTRICAL SYSTEM. DAMAGE TO

More information

EVALUATION OF EVENT DATA RECORDERS IN FULL SYSTEMS CRASH TESTS

EVALUATION OF EVENT DATA RECORDERS IN FULL SYSTEMS CRASH TESTS EVALUATION OF EVENT DATA RECORDERS IN FULL SYSTEMS CRASH TESTS Peter Niehoff Rowan University United States Hampton C. Gabler Virginia Tech United States John Brophy Chip Chidester John Hinch Carl Ragland

More information

DD2-PRO+ Gps enabled Datalogger & display system mm (W) x 90mm (H) x 28mm (D) Datalogger Front 109mm (W) x 35mm (H) x 121mm (D) Datalogger Back

DD2-PRO+ Gps enabled Datalogger & display system mm (W) x 90mm (H) x 28mm (D) Datalogger Front 109mm (W) x 35mm (H) x 121mm (D) Datalogger Back DD2-PRO+ Gps enabled Datalogger & display system PRO Display - 160.4mm (W) x 90mm (H) x 28mm (D) Datalogger Front 109mm (W) x 35mm (H) x 121mm (D) Datalogger Back Feature Summary Display Programmable Speed

More information

ARMS Series Rotary Motion Simulators

ARMS Series Rotary Motion Simulators ARMS Series Rotary Motion Simulators Designed for highly accurate motion generation Velocity stability of 0.0001% over 360 Position resolution to 0.02 arc sec Payloads to 230 kg Integrated slip rings and

More information

Experimental Validation of a Scalable Mobile Robot for Traversing Ferrous Pipelines

Experimental Validation of a Scalable Mobile Robot for Traversing Ferrous Pipelines Project Number: MQP TP1- IPG1 Experimental Validation of a Scalable Mobile Robot for Traversing Ferrous Pipelines A Major Qualifying Project (MQP) Submitted to the Faculty of WORCESTER POYTECHNIC INSTITUTE

More information

CRASH TEST REPORT FOR PERIMETER BARRIERS AND GATES TESTED TO SD-STD-02.01, REVISION A, MARCH Anti-Ram Bollards

CRASH TEST REPORT FOR PERIMETER BARRIERS AND GATES TESTED TO SD-STD-02.01, REVISION A, MARCH Anti-Ram Bollards CRASH TEST REPORT FOR PERIMETER BARRIERS AND GATES TESTED TO SD-STD-02.01, REVISION A, MARCH 2003 Anti-Ram Bollards Prepared for: RSA Protective Technologies, LLC 1573 Mimosa Court Upland, CA 91784 Test

More information

CRASH TEST REPORT FOR PERIMETER BARRIERS AND GATES TESTED TO SD-STD-02.01, REVISION A, MARCH Anti-Ram Bollards

CRASH TEST REPORT FOR PERIMETER BARRIERS AND GATES TESTED TO SD-STD-02.01, REVISION A, MARCH Anti-Ram Bollards CRASH TEST REPORT FOR PERIMETER BARRIERS AND GATES TESTED TO SD-STD-02.01, REVISION A, MARCH 2003 Anti-Ram Bollards Prepared for: RSA Protective Technologies, LLC 1573 Mimosa Court Upland, CA 91784 Test

More information

Control of Mobile Robots

Control of Mobile Robots Control of Mobile Robots Introduction Prof. Luca Bascetta (luca.bascetta@polimi.it) Politecnico di Milano Dipartimento di Elettronica, Informazione e Bioingegneria Applications of mobile autonomous robots

More information

Performance Measures Using

Performance Measures Using Real-Time Arterial Traffic Performance Measures Using GPS-Equipped Vehicles Xiao Qin, PE, Ph.D. Jason Anderson, EIT Adam Wellner, EIT Department of Civil and Environmental Engineering South Dakota State

More information

RESEARCH OF THE STOPPING DISTANCE FOR DIFFERENT ROAD CONDITIONS

RESEARCH OF THE STOPPING DISTANCE FOR DIFFERENT ROAD CONDITIONS STOPPING DISTANCE. DECELERATION. VBOX 3i. GPS DATA LOGGER. Daniel LYUBENOV Department of Transport University of Ruse, 8 Studentska Str., 7017 Ruse, Bulgaria E-mail: dliubenov@uni-ruse.bg RESEARCH OF THE

More information

SAE AERO DESIGN PROJECT PROPULSION & TELEMETRY SYSTEMS UNION COLLEGE FLIGHT CLUB. Ervin Meneses and Joseph Laub Advisor John Spinelli,Ph.

SAE AERO DESIGN PROJECT PROPULSION & TELEMETRY SYSTEMS UNION COLLEGE FLIGHT CLUB. Ervin Meneses and Joseph Laub Advisor John Spinelli,Ph. SAE AERO DESIGN PROJECT PROPULSION & TELEMETRY SYSTEMS UNION COLLEGE FLIGHT CLUB Ervin Meneses and Joseph Laub Advisor John Spinelli,Ph.D SAE Aero Design Team Society of Automotive Engineers Team of five,

More information

Feasibility of Using Advanced EDRs for Assessing Active Safety Systems

Feasibility of Using Advanced EDRs for Assessing Active Safety Systems Feasibility of Using Advanced EDRs for Assessing Active Safety Systems H. Clay Gabler Kristofer D. Kusano Virginia Tech 7 November 2013 Center for Injury Biomechanics COLLEGE of ENGINEERING C I B Challenge:

More information

EXPERIMENTAL TEST OF OCCUPANT ENTRAPMENT FORD TAURUS INTO REAR OF FORD EXPLORER 30% OFFSET, 70 MPH. Test Date: August 3, 2010

EXPERIMENTAL TEST OF OCCUPANT ENTRAPMENT FORD TAURUS INTO REAR OF FORD EXPLORER 30% OFFSET, 70 MPH. Test Date: August 3, 2010 EXPERIMENTAL TEST OF OCCUPANT ENTRAPMENT FORD TAURUS INTO REAR OF FORD EXPLORER 30% OFFSET, 70 MPH Test Date: August 3, 2010 Final Report Date: September 25, 2010 SECTION 1 PURPOSE AND SUMMARY OF TEST

More information

Design of the Target Injection and Tracking Experimental System

Design of the Target Injection and Tracking Experimental System Design of the Target Injection and Tracking Experimental System Ron Petzoldt, Neil Alexander, Gottfried Besenbruch, Mike Cherry, Walt Egli, Dan Goodin, and Chuck Gibson ARIES Meeting Princeton, New Jersey

More information

Motronic MS Electronic design. Functionality. Mechanical data. Conditions for use

Motronic MS Electronic design. Functionality. Mechanical data. Conditions for use Motronic MS 1.10 The MS 1.10 is a highly sophisticated engine management system for high performance engines. The system contains 12 ignition power stages and 24 independent injection power stages. All

More information

Challenging onboard measurements in a 100 MW high-head Francis turbine prototype

Challenging onboard measurements in a 100 MW high-head Francis turbine prototype Challenging onboard measurements in a 100 MW high-head Francis turbine prototype Vlad Hasmatuchi Jean Decaix Cécile Münch-Alligné Maximilian Titzschkau François Avellan Page 1 Birmensdorf - September 15

More information

EDR Case Studies Intersection Crash

EDR Case Studies Intersection Crash EDR Case Studies Intersection Crash Presented by Richard R. Ruth, P.E. At 2017 IPTM Special Problems rick@ruthconsulting.com 313-910-5809 Copyright Ruth 2017 - Authorized for use by IPTM and SAE 1 Case

More information

SWII Users Manual. Intercomp Co County Road 116 Minneapolis, MN (763) Fax

SWII Users Manual. Intercomp Co County Road 116 Minneapolis, MN (763) Fax Manual Intercomp Co. 3839 County Road 116 Minneapolis, MN 55340 (763)-476-2531 1-800-328-3336 Fax 763-476-2613 www.intercompracing.com Manual #: 700036-I Table of Contents INTRODUCTION...3 SPECIFICATIONS...3

More information

The Center for Auto Safety

The Center for Auto Safety TEST REPORT FOR: The Center for Auto Safety 40 mph Vehicle to Vehicle 30% Offset Rear Impact 40 mph Vehicle to Vehicle 30% Offset Rear Impact 1996 Jeep Grand Cherokee Limited 1988 Ford Taurus PREPARED

More information

Experimental Measurement of Frictional Torque in End Pivoted Roller Finger Follower Valve Train

Experimental Measurement of Frictional Torque in End Pivoted Roller Finger Follower Valve Train ISBN 978-93-84422-76-9 6th International Conference on Developments in Engineering and Technology (ICDET-2017) Bangkok (Thailand) Feb.6-7, 2017 Experimental Measurement of Frictional Torque in End Pivoted

More information

A complete hybrid VTOL autopilot solution. Start anywhere, fly everywhere.

A complete hybrid VTOL autopilot solution. Start anywhere, fly everywhere. Key Features A complete hybrid VTOL autopilot solution. Start anywhere, fly everywhere. Supported Vehicle Types s Multirotors Fixed-wings Bi-, tri- and quadcopter tailsitters, quadplanes and tiltrotors.

More information

System Level Design Review

System Level Design Review System Level Design Review HABIP High Altitude Balloon Instrumentation Platform P17104 & P17105 October 6, 2016 Team Members Team Communications Data Acquisition and Control Systems Team Member Major Team

More information

A dream? Dr. Jürgen Bredenbeck Tire Technology Expo, February 2012 Cologne

A dream? Dr. Jürgen Bredenbeck Tire Technology Expo, February 2012 Cologne Rolling resistance measurement on the road: A dream? Dr. Jürgen Bredenbeck Tire Technology Expo, 14.-16. February 2012 Cologne Content Motivation Introduction of the used Measurement Equipment Introduction

More information

Centimetre-accurate, speed-triggered braking distance measurements with ADMA-Speed

Centimetre-accurate, speed-triggered braking distance measurements with ADMA-Speed Speed and braking distance sensor from GeneSys: Centimetre-accurate, speed-triggered braking distance measurements with ADMA-Speed ADMA-Speed is the compact GPS speed sensor from GeneSys featuring inertial

More information

Quick Guide. With XI-5A Gimbal

Quick Guide. With XI-5A Gimbal Quick Guide With XI-5A Gimbal 1. INTRODUCING EVO Thank you for your purchase and welcome to the Autel Robotics family. EVO is the latest evolution in drone design and technology. Obstacle avoidance, Intelligent

More information

S06 Update 7th SHRP 2 Safety Research Symposium Washington, DC July 12, Driving Transportation with Technology VTTI 7/12/2012 1

S06 Update 7th SHRP 2 Safety Research Symposium Washington, DC July 12, Driving Transportation with Technology VTTI 7/12/2012 1 S06 Update 7th SHRP 2 Safety Research Symposium Washington, DC July 12, 2012 1 Executive Overview: Original NDS Targets Largest Naturalistic Driving Study Ever Undertaken ca. 3,100 primary drivers, all

More information

Vehicle CAN Database. Porsche 911 (991) GT3 Cup Gen1 - Bosch Connector

Vehicle CAN Database. Porsche 911 (991) GT3 Cup Gen1 - Bosch Connector Vehicle CAN Database Porsche 911 (991) GT3 Cup Gen1 - Bosch Connector Overview Racelogic have acquired CAN signals for customers to use with VCI (Vehicle CAN Interface) products. This information is available

More information

EDR Analyst Guide EACH Yes No (says not) Doesn t Say check DL for other criteria How much Longitudinal Lateral Graph Graph important

EDR Analyst Guide EACH Yes No (says not) Doesn t Say check DL for other criteria How much Longitudinal Lateral Graph Graph important 1. Are there any EDR s available from any of the vehicles involved that are supported by CDR? (Check help file) 2. Is there more than one EDR in any of the accident vehicles? Ford PCM or GM ROS? (Check

More information

V2V Advancements in the last 12 months. CAMP and related activities

V2V Advancements in the last 12 months. CAMP and related activities V2V Advancements in the last 12 months CAMP and related activities Mike Shulman, Ford April 22, 2014 Connected Transportation Environment: Future Vision Mobility Safety Environment Global Gridlock 2 US:

More information

Single Vehicle Loss of Control

Single Vehicle Loss of Control . Single Vehicle Loss of Control the natural motion is to continue in the same direction weight shifts to outside of turn INERTIA weight shifts to outside of turn INERTIA friction a yaw occurs when the

More information

Airfield Frangibility Criteria Questions and Concerns with Current Standards

Airfield Frangibility Criteria Questions and Concerns with Current Standards Airfield Frangibility Criteria Questions and Concerns with Current Standards IES ALC Orlando, Florida October 21, 2014 Presenters Robert Dinan, Ph.D., P.E., USAF,-AFCESA, Tyndall AFB, Florida Daniel Duke,

More information

HVE Vehicle Accelerometers: Validation and Sensitivity

HVE Vehicle Accelerometers: Validation and Sensitivity WP#-2015-3 HVE Vehicle Accelerometers: Validation and Sensitivity Kent W. McKee, M.E.Sc., P.Eng., Matthew Arbour, B.A.Sc., Roger Bortolin, P.Eng., and James R. Hrycay, M.A.Sc., P.Eng. HRYCAY Consulting

More information

RoaDyn S635 System 2000

RoaDyn S635 System 2000 Force RoaDyn S635 System 2000 Wheel Force Sensor for Heavy PassCars and High Performance Sports Cars Wheel force sensor for measuring three forces and three moments on a rotating wheel; a major constituent

More information

NASA University Student Launch Initiative (Sensor Payload) Final Design Review. Payload Name: G.A.M.B.L.S.

NASA University Student Launch Initiative (Sensor Payload) Final Design Review. Payload Name: G.A.M.B.L.S. NASA University Student Launch Initiative (Sensor Payload) Final Design Review Payload Name: G.A.M.B.L.S. CPE496-01 Computer Engineering Design II Electrical and Computer Engineering The University of

More information

Key Features: Alerts when tire pressure is too low Alerts when tire pressure is too high Alerts when tire temperature is too high

Key Features: Alerts when tire pressure is too low Alerts when tire pressure is too high Alerts when tire temperature is too high Key Features: Visual and audible warnings Set desired PSI level Alerts when tire pressure is too low Alerts when tire pressure is too high Alerts when tire temperature is too high Mounts to windshield

More information

Test Infrastructure Design for Core-Based System-on-Chip Under Cycle-Accurate Thermal Constraints

Test Infrastructure Design for Core-Based System-on-Chip Under Cycle-Accurate Thermal Constraints Test Infrastructure Design for Core-Based System-on-Chip Under Cycle-Accurate Thermal Constraints Thomas Edison Yu, Tomokazu Yoneda, Krishnendu Chakrabarty and Hideo Fujiwara Nara Institute of Science

More information

JAXA's electric propulsion systems

JAXA's electric propulsion systems JAXA's electric propulsion systems Akira Nishizawa Emission free aircraft section Innovative Aircraft Systems Research Aircraft Systems Research Team Next Generation Aeronautical Innovation Hub Center

More information

The Center for Auto Safety

The Center for Auto Safety TEST REPORT FOR: The Center for Auto Safety 50 mph Vehicle to Vehicle 30% Offset Rear Impact 50 mph Vehicle to Vehicle 30% Offset Rear Impact 1999 Jeep Grand Cherokee Laredo 1987 Ford Taurus PREPARED FOR:

More information

BigRoad. Scaling Road Data Acquisition for Dependable Self-Driving. The first two authors are co-primary student authors. *

BigRoad. Scaling Road Data Acquisition for Dependable Self-Driving. The first two authors are co-primary student authors. * BigRoad Scaling Road Data Acquisition for Dependable Self-Driving Luyang Liu *, Hongyu Li *, Jian Liu #, Cagdas Karatas *, Yan Wang, Marco Gruteser *, Yingying Chen #, Richard P. Martin * The first two

More information

STATUS OF NHTSA S EJECTION MITIGATION RESEARCH. Aloke Prasad Allison Louden National Highway Traffic Safety Administration

STATUS OF NHTSA S EJECTION MITIGATION RESEARCH. Aloke Prasad Allison Louden National Highway Traffic Safety Administration STATUS OF NHTSA S EJECTION MITIGATION RESEARCH Aloke Prasad Allison Louden National Highway Traffic Safety Administration United States of America Stephen Duffy Transportation Research Center United States

More information

Validation of Equations for Motorcycle and Rider Lean on a Curve

Validation of Equations for Motorcycle and Rider Lean on a Curve 2015-01-1422 Published 04/14/2015 Copyright 2015 SAE International doi:10.4271/2015-01-1422 saetransaf.saejournals.org Validation of Equations for Motorcycle and Rider Lean on a Curve Neal Carter, Nathan

More information

ABB ROBOTICS, DECEMBER 2015 IRB 910SC. SCARA Overview

ABB ROBOTICS, DECEMBER 2015 IRB 910SC. SCARA Overview ABB ROBOTICS, DECEMBER 2015 IRB 910SC SCARA Overview IRB 910 SC Agenda 1. Differentiated value proposition 2. Overview and vision 3. Main features 4. Payload 5. Working range 6. Performance and accuracy

More information

SPEED IN URBAN ENV VIORNMENTS IEEE CONFERENCE PAPER REVIW CSC 8251 ZHIBO WANG

SPEED IN URBAN ENV VIORNMENTS IEEE CONFERENCE PAPER REVIW CSC 8251 ZHIBO WANG SENSPEED: SENSING G DRIVING CONDITIONS TO ESTIMATE VEHICLE SPEED IN URBAN ENV VIORNMENTS IEEE CONFERENCE PAPER REVIW CSC 8251 ZHIBO WANG EXECUTIVE SUMMARY Brief Introduction of SenSpeed Basic Idea of Vehicle

More information

Instrumentation of Navistar Truck for Data Collection

Instrumentation of Navistar Truck for Data Collection Instrumentation of Navistar Truck for Data Collection Rajesh Rajamani, Pricipal Investigator Department of Mechanical Engineering University of Minnesota January 2013 Research Project Final Report 2013-01

More information

STI Project: Barrier Systems, Inc. RTS-QMB Longitudinal Barrier. Page 38 of 40 QBOR1. Appendix F (Continued) Figure F-3

STI Project: Barrier Systems, Inc. RTS-QMB Longitudinal Barrier. Page 38 of 40 QBOR1. Appendix F (Continued) Figure F-3 Barrier Systems, Inc. RTS-QMB Longitudinal Barrier STI Project: QBOR1 Page 38 of 40 Appendix F (Continued) Figure F-3 t=.500sec 115 meters overall 37.1 Impact Severity (kj).. 141.6 Angle (deg).. 25 Speed

More information

Alan R. Klembczyk, Chief Engineer Taylor Devices, Inc. North Tonawanda, NY

Alan R. Klembczyk, Chief Engineer Taylor Devices, Inc. North Tonawanda, NY SIMULATION, DEVELOPMENT, AND FIELD MEASUREMENT VALIDATION OF AN ISOLATION SYSTEM FOR A NEW ELECTRONICS CABINET IN THE SPACE SHUTTLE LAUNCH ENVIRONMENT WITHIN THE MOBILE LAUNCH PLATFORM Alan R. Klembczyk,

More information

Stepper Motors ver ver.5

Stepper Motors ver ver.5 A Stepper s Stepper s A-1 Overview... A-2 Overview and... A-15 & Stepper and RK Series A-16 RK... A-47... A-51 Stepper Series A-52 Stepper Series A-8 See Full Product Details Online www.orientalmotor.com

More information

NEW DIMENSIONS OF SNOWMAKING

NEW DIMENSIONS OF SNOWMAKING english Compact, lightweight, good handling. With a total height of 2.40 m and a width of 2.35 m, the T40 Automatic Mobile is ultra-compact and therefore easy to transport, whether by truck or freight

More information

MGA Research Corporation

MGA Research Corporation MGA Research Corporation Real Time Simulation Testing Gerald Roesser David Nagle Thomas Hutter MGA Research Corporation 1 MGA Research Corporation PRESENTERS Gerald Roesser BSEE MGA Associate since 2001

More information

Analysis of Bruntingthorpe crash test data

Analysis of Bruntingthorpe crash test data Analysis of Bruntingthorpe crash test data Martin Worrell Technical Director : APD Introduction APD has provided mission-critical and businesscritical solutions to organisations within the public sector,

More information

Grey Box System Identification of Bus Mass

Grey Box System Identification of Bus Mass Grey Box System Identification of Bus Mass Darren Achtymichuk M. Sc. Student University of Alberta Department of Mechanical Engineering Project Background When analyzing vehicle dynamics, the mass of the

More information

Portland Police Bureau

Portland Police Bureau Training Division Portland Police Bureau 191 NE Airport Way Portland OR 97 Bryan Parman, Captain Portland Police Bureau in partnership with the Oregon Department of Public Safety Standards and Training

More information

Abstract- A system designed for use as an integrated starter- alternator unit in an automobile is presented in this paper. The

Abstract- A system designed for use as an integrated starter- alternator unit in an automobile is presented in this paper. The An Integrated Starter-Alternator System Using Induction Machine Winding Reconfiguration G. D. Martin, R. D. Moutoux, M. Myat, R. Tan, G. Sanders, F. Barnes University of Colorado at Boulder, Department

More information

Accident Reconstruction Tech and Heavy Trucks

Accident Reconstruction Tech and Heavy Trucks Accident Reconstruction Tech and Heavy Trucks September 22, 2016 Ashley (Al) Dunn, Ph.D., P.E. 1 We re All Here Because.. Stuff Happens 2 Accident Reconstruction Trucks are Different 3 The Truck is 20

More information

Collecting Vehicle Trajectory Information by Smartphones when GPS Signal is Lost

Collecting Vehicle Trajectory Information by Smartphones when GPS Signal is Lost Collecting Vehicle Trajectory Information by Smartphones when GPS Signal is Lost Mecit Cetin, PhD Department of Civil and Environmental Engineering Tamer Nadeem, PhD Computer Science Ilyas Ustun, Abdulla

More information

BY HOEYCOMB AEROSPACE TECHNOLOGIES. HC-330 HYBRID-POWERED ALL- ELECTRICITY DRIVEN four-rotor UAV

BY HOEYCOMB AEROSPACE TECHNOLOGIES. HC-330 HYBRID-POWERED ALL- ELECTRICITY DRIVEN four-rotor UAV BY HOEYCOMB AEROSPACE TECHNOLOGIES HC-330 HYBRID-POWERED ALL- ELECTRICITY DRIVEN four-rotor UAV Content SYSTEM SPECIFICATI- ON TYPICAL USING PROCESS OVERVIEW SUBSYSTEM SPECIFICATI- ON 1 OVERVIEW System

More information

CRSM: Crowdsourcing based Road Surface Monitoring

CRSM: Crowdsourcing based Road Surface Monitoring CRSM: Crowdsourcing based Road Surface Monitoring Kongyang Chen 1, Mingming Lu 2, Guang Tan 1, and Jie Wu 3 1SIAT, Chinese Academy of Sciences, 2 Central South University 3Temple University Nov. 15 th,

More information

Wheelchair Transportation Principles I: Biomechanics of Injury

Wheelchair Transportation Principles I: Biomechanics of Injury Wheelchair Transportation Principles I: Biomechanics of Injury Gina Bertocci, Ph.D. & Douglas Hobson, Ph.D. Department of Rehabilitation Science and Technology University of Pittsburgh This presentation

More information

FC151. FC151 Flight Control System Instruction Manual. #21436

FC151. FC151 Flight Control System Instruction Manual. #21436 Shanghai Dualsky Models co.,ltd. Rm.1016,No.201,Xin Jin Qiao Rd.,Shanghai,China. Tel: +86 21 50322162 Fax: +86 21 50322163 Flight Control System Instruction Manual Made in China 41ZX15F0810 #21436 http://www.dualsky.com

More information

NAU Robosub. Project Proposal

NAU Robosub. Project Proposal NAU Robosub Project Proposal Mansour Alajemi, Feras Aldawsari, Curtis Green, Daniel Heaton, Wenkai Ren, William Ritchie, Bethany Sprinkle, Daniel Tkachenko December 09, 2015 Bethany Overview Introduction

More information

Passenger Vehicle Steady-State Directional Stability Analysis Utilizing EDVSM and SIMON

Passenger Vehicle Steady-State Directional Stability Analysis Utilizing EDVSM and SIMON WP# 4-3 Passenger Vehicle Steady-State Directional Stability Analysis Utilizing and Daniel A. Fittanto, M.S.M.E., P.E. and Adam Senalik, M.S.G.E., P.E. Ruhl Forensic, Inc. Copyright 4 by Engineering Dynamics

More information

FAA FRANGIBILITY RESEARCH

FAA FRANGIBILITY RESEARCH FAA FRANGIBILITY RESEARCH Presented to: IES ALC Fall Conference By: Joseph Breen Date: FAA The overall objective of this research is to develop a better methodology for measuring and evaluating the frangibility

More information

Phased Array Integrated Instrumentation

Phased Array Integrated Instrumentation Phased Array Acquisition Unit Phased Array Integrated Instrumentation Powerful Scalable Excellent signal quality Rugged and compact Easy integration Phased Array Instrumentation Designed for Demanding

More information

How and why does slip angle accuracy change with speed? Date: 1st August 2012 Version:

How and why does slip angle accuracy change with speed? Date: 1st August 2012 Version: Subtitle: How and why does slip angle accuracy change with speed? Date: 1st August 2012 Version: 120802 Author: Brendan Watts List of contents Slip Angle Accuracy 1. Introduction... 1 2. Uses of slip angle...

More information

fleet management and security

fleet management and security Real-time fleet management and security Helios the Ruler of the Sun, believed to be the "All-Seeing" - according to early Greek mythology. Above All The most sophisticated unit for real-time fleet management

More information

Railway vibration measurement. Enhance safety and cut maintenance costs

Railway vibration measurement. Enhance safety and cut maintenance costs Enhance safety and cut maintenance costs Railway vibration measurement Vibration sensors for the design, commissioning and monitoring of trains, tramways and subways High-speed trains under test at China's

More information

SECTION A DYNAMICS. Attempt any two questions from this section

SECTION A DYNAMICS. Attempt any two questions from this section SECTION A DYNAMICS Question 1 (a) What is the difference between a forced vibration and a free or natural vibration? [2 marks] (b) Describe an experiment to measure the effects of an out of balance rotating

More information