TEG-87 19 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
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
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
Test Test Rigs, contd. Simplified Car: Type 2 Cross Sectional Dimensions align with the Car Center Line Vertical (mm) 12 1 8 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 -4-2 2 4 6 8 Horizontal (mm) 4
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
Impact Condition Vertical (mm) 12 1 8 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 % -4-2 2 4 6 8 Horizontal (mm) 6
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
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
Test Test Results 9
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
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-1 4 3 2 1-1 -2 1 2 3 4 5 6 7 8 Time (ms) 5 Tibia-2 4 3 2 1-1 -2 1 2 3 4 5 6 7 8 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-3 4 3 2 1-1 -2 1 2 3 4 5 6 7 8 Time (ms) 5 Tibia-4 4 3 2 1-1 -2 1 2 3 4 5 6 7 8 Time (ms) Knee-ACL Knee-PCL Knee-MCL Elongation (mm) Elongation (mm) 3 Knee-ACL 25 2 15 1 5-5 1 2 3 4 5 6 7 8 Time (ms) 3 Knee-PCL 25 2 15 1 5-5 1 2 3 4 5 6 7 8 Time (ms) Elongation (mm) 3 25 2 15 1 5-5 Knee-MCL 1 2 3 4 5 6 7 8 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
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), S8 273.7 269.6 269.8 139.5 11.61 8.18 19.3 Flex-GTR-prot. (SN3), S9 282.1 28. 281.1 149.2 12.11 7.72 18.8 avg. 277.9 274.8 275.5 144.3 11.9 8. 19.1 Simplified Car (Type 2-R) Flex-GTR-prot. (SN3), S1 285.6 281.5 278.7 146.5 11.81 7.38 19.8 Flex-GTR-prot. (SN3), S11 285.6 281.5 278.7 146.5 11.81 7.38 19.8 avg. 285.6 281.5 278.7 146.5 11.8 7.4 19.8 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) 45 4 35 3 25 2 15 1 5 Tibia-1 Tibia-2 Tibia-3 Tibia-4 Elongation - Max. (mm) 32 28 24 2 16 12 8 4 Knee-ACL Knee-PCL Knee-MCL 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), Avg. 277.9 274.8 275.5 144.3 11.86 7.95 19.1 Simplified Car (Type 2-R), Avg 285.6 281.5 278.7 146.5 11.81 7.38 19.8 Avg. 281.8 278.1 277.1 145.4 11.84 7.67 19.42 St. Dev. 5.42 4.77 2.3 1.55.4.4.49 CV (%) 1.92 1.72.83 1.6.3 5.26 2.51 Judgement Good Good Good Good Good Acceptable Good t-iarv* 318 318 318 318 12.7 12.7 2. St.Dev./t-IARV (%) 1.7 1.5.72.49.28 3.17 2.44 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
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