Crash Data Presentation NAPARS Crash Conference
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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
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