TEG th May th Flex-TEG Meeting JAMA-JARI

Transcription

1 TEG th May 29 8 th Flex-TEG Meeting JAMA-JARI Technical Evaluation Tests for the Flex-GTR-prototype Comparability of the Flex-GTR-proto output under the symmetric right and left bumper corner impact 1

2 Back Grounds In the Flex-GT tests, incomparable test results were obtained under the symmetric right and left bumper corner impact because of the asymmetric structure of the knee joint. In the Flex-GTR-prototype development, knee joint was developed by having symmetric structure. JAMA/JARI therefore conducted symmetric right and left bumper corner impact tests using the Flex-GTR-prototype in order to check the comparability of the test results. 2

3 Test Test Rigs Simplified Car: Type 2 (Photo: Overview) Type 2-R Right bumper corner Type 2-L Left bumper corner BLE BLE BP BP SP SP 3 deg. 3 deg. BLE: Bonnet leading edge BP: Bumper SP: Spoiler 3

4 Test Test Rigs, contd. Simplified Car: Type 2 Cross Sectional Dimensions align with the Car Center Line Vertical (mm) H1 = 8 mm H2 = 525 mm H3 = 3 mm L1 = 18 mm BLE: Bonnet leading edge BP: Bumper, SP: Spoiler BLE ( t =.6 mm ) H1 6 BP ( t =.8 mm ) 4 H2 SP ( t =.8 mm ) 2 H3 L2 (3 mm) Ground level Horizontal (mm) 4

5 Test Test Rigs, contd. Simplified Car: Type 2 (Photo: After test) Type 2-R Right bumper corner Type 2-L Left bumper corner BLE BLE BP BP SP SP BLE: Bonnet leading edge BP: Bumper SP: Spoiler 5

6 Impact Condition Vertical (mm) Impact Speed 11.1 ±.2 m/s Flex-GTR-proto Simplified Car (Type 2) Side view (image) 6 BP 4 2 Impact Height 75 ± 1 mm Ground Level Temperature 2 ± 4 deg. Celsius Relative Humidity 4 ± 3 % Horizontal (mm) 6

7 Impact Condition, contd. Flex-GTR-proto Top view (image) Horizontal Location ± 1 mm Impact direction Simplified car center line BP Simplified Car (Type 2-R) Horizontal Location ± 1 mm Flex-GTR-proto Impact direction BP Simplified Car (Type 2-L) Simplified car center line BP: Bumper 7

8 Test Test Matrix Test ID S8 S9 S1 S11 Impactor Simplified Car DAS Type SN Type Flex-GTR-proto SN3 SLICE Type 2-L Type 2-R Comparability of the Flex-GTR-proto output under the symmetric right and left bumper corner impact 8

9 Test Test Results 9

10 Kinematics (Flex-GTR-prototype, L and R Bumper Corner Impact) Flex-GTR-proto. (SN3), S8 Simplified Car (Type 2-L) Simplified Car Type 2-L Flex-GTR-proto. (SN3), S9 Simplified Car (Type 2-L) Simplified Car Type 2-R Flex-GTR-proto. (SN3), S1 Simplified Car (Type 2-R) Inversed Images Flex-GTR-proto. (SN3), S11 Simplified Car (Type 2-R) Inversed Images ms 1 ms 2 ms 3 ms 4 ms 1

11 Waveforms (Flex-GTR-prototype, L and R Bumper Corner Impact) Tibia-1 Tibia-2 Tibia-3 Tibia-4 Bending moment (Nm) Bending moment (Nm) 5 Tibia Time (ms) 5 Tibia Time (ms) Bending moment (Nm) Bending moment (Nm) Flex-GTR-proto.(SN3), Simplified Car (Type 2-L), S8 Flex-GTR-proto.(SN3), Simplified Car (Type 2-L), S9 Flex-GTR-proto.(SN3), Simplified Car (Type 2-R), S1 Flex-GTR-proto.(SN3), Simplified Car (Type 2-R), S11 5 Tibia Time (ms) 5 Tibia Time (ms) Knee-ACL Knee-PCL Knee-MCL Elongation (mm) Elongation (mm) 3 Knee-ACL Time (ms) 3 Knee-PCL Time (ms) Elongation (mm) Knee-MCL Time (ms) Flex-GTR-proto.(SN3), Simplified Car (Type 2-L), S8 Flex-GTR-proto.(SN3), Simplified Car (Type 2-L), S9 Flex-GTR-proto.(SN3), Simplified Car (Type 2-R), S1 Flex-GTR-proto.(SN3), Simplified Car (Type 2-R), S11 11

12 Maximum Values (Flex-GTR-prototype, L and R Bumper Corner Impact) Comparability Check for Flex-GTR-prototype (SN3) Under Right and Left Bumper Corner Impact Test Method: Subsystem (Free fright) Test Rig: Simplified Car Max. values** Tibia-1 Tibia-2 Tibia-3 Tibia-4 Knee-ACL Knee-PCL Knee-MCL (Nm) (Nm) (Nm) (Nm) (mm) (mm) (mm) Simplified Car (Type 2-L) Flex-GTR-prot. (SN3), S Flex-GTR-prot. (SN3), S avg Simplified Car (Type 2-R) Flex-GTR-prot. (SN3), S Flex-GTR-prot. (SN3), S avg Injury Assessment Items Monitoring Items Simplified Car (Type 2-L) Flex-GTR-prot. (SN3), S8 Flex-GTR-prot. (SN3), S9 Simplified Car (Type 2-R) Flex-GTR-prot. (SN3), S1 Flex-GTR-prot. (SN3), S11 Bending Moment - Max. (Nm) Tibia-1 Tibia-2 Tibia-3 Tibia-4 Elongation - Max. (mm) Knee-ACL Knee-PCL Knee-MCL 12

13 Maximum Values (Flex-GTR-prototype, L and R Bumper Corner Impact) Comparability Check for Flex-GTR-prototype (SN3) Under Right and Left Bumper Corner Impact Test Method: Subsystem (Free fright) Test Rig: Simplified Car Max. values** Tibia-1 Tibia-2 Tibia-3 Tibia-4 Knee-ACL Knee-PCL Knee-MCL (Nm) (Nm) (Nm) (Nm) (mm) (mm) (mm) Simplified Car (Type 2-L), Avg Simplified Car (Type 2-R), Avg Avg St. Dev CV (%) Judgement Good Good Good Good Good Acceptable Good t-iarv* St.Dev./t-IARV (%) Judgement Good Good Good Good Good Acceptable Good * t-iarv: Tentative Injury Assessment Reference Values ** Injury assessement items and monitoring items were evaluated. Injury Assessment Items Monitoring Items Judgements Good: < 3% Acceptable: 3% and < 7% Marginal: 7% and < 1% Not Acceptable: > 1% 13

14 Conclusions JAMA/JARI conducted symmetric right and left bumper corner impact tests using the Flex-GTR-prototype. As a results, we observed comparable test results of the Flex-GTR prototype under the symmetric right and left bumper corner impact. This results means, no concerns of the Flex-GTR-prototype for to use the symmetric right and left bumper corner impact tests. 14