Transcript Informal document No. GRSP-41-09 (41st GRSP, 7-11 May 2007, agenda item 2.1.1.) Transmitted by the expert from Japan Status Report on Flexible Pedestrian Legform Impactor Technical.

Informal document No. GRSP-41-09
(41st GRSP, 7-11 May 2007,
agenda item 2.1.1.)
Transmitted by the expert from Japan
Status Report on
Flexible Pedestrian Legform Impactor
Technical Evaluation Group (Flex-TEG)
Activities
Atsuhiro Konosu
Chairperson of Flex-TEG, Japan
41st GRSP
Flex-TEG Overall Schedule
Overall Shcedule of Flex-TEG
6
7
8
1. Meetings
1.1. GRSP
1.2. Flex-TEG
2005
9 10 11 12 1
2
3
4
5
38th
1st
2006
6 7
8
9 10 11 12 1
39th
2nd
2
3
4
5
40th
3rd
JAMA, BASt/BGS, J-MLIT
Flex-GTprototype
Flex-GT
finalization
activities
JAMA***, J-MLIT***
Flex-GT
(finalized)
Intial action items
1) Flex-GT and
Flex-GT-prototype
comparison
2) Additional Analysis
on the repeatability
and reproducibility
of Flex-GT
BASt/BGS***, ACEA***
2.1.3. Flex-GTR
2.1.3.1. Development
2.1.3.2. Evaluation tests*
2.3. Evaluation of Technical Feasibility
2.3.1. Leg
2.3.2. Knee
42nd
5th (TBD)
JAMA, J-MLIT, NTSEL
2.2. Review of Injury Risk Functions**
2.2.1. Leg
2.2.2. Knee
9 10 11 12
41st
Flex-G
2.1.2. Flex-GT
2.1.2.1. Development
2.1.2.2. Evaluation tests*
8
4th
2. Activities
2.1. Development and Evaluation tests
2.1.1. Flex-G
2.1.1.1. Development
2.1.1.2. Evaluation tests*
2007
6 7
tentative values
tentative values
tentative values
tentative values
JAMA, BASt/BGS
JAMA, BASt/BGS
2.4. Evaluation of Lower Limb
Protection Level
2.4.1. Leg
2.4.2. Knee
* Usability, Repeatability, Reproducibility, Durability, and Comparison of those issues between the Flex-PLI and the TRL-LFI.
** Review and propose threshold values for Flex-PLI
*** Flex-GT-prototype tests
Round-robin tests
Latest Flex-TEG Activities (4th Flex-TEG meeting)
Agenda of 4th Flex-TEG meeting (2 April 2007, BASt, Bergisch Gladbach)
1. Opening and Welcome
2. Adoption on the draft agenda of 4th Flex-TEG meeting
3. Adoption on the draft minutes for 3rd Flex-TEG meeting
4. Confirmation of Status of Action Items
5. Flex-GT Information and Discussions
5.1. Computer simulation analysis
5.1.1. Development of an FE Biofidelic Flexible Pedestrian Legform Impactor Model
(FLEX-GT-prototype Model)
5.1.2. Development of a Biofidelic Flexible Pedestrian Legform Impactor Type GT
(FLEX-GT)
5.2. Specifications
5.2.1. Information on Flexible Pedestrian Legform Impactor Type GT (FLEX-GT)
5.3. Test results
5.3.1. Flexible Pedestrian Legform Impactor Type GT (FLEX-GT) Evaluation Test Results
5.3.2. Flexible Pedestrian Legform Impactor Type GT (FLEX-GT) Car Test Results
5.3.3. Flex-GT-prototype BASt Tests
5.3.4. Handling and Usage (Flex-GT-prototype)
5.3.5. Certification Histories (Flex-GT-prototype)
5.3.6. Flex-GT-prototype ACEA/BASt Tests at BASt/BGS March 2007
5.4. Demonstration of the Flex-GT-prototype test (13:30h)
6. Future action plans (round-robin tests, etc.)
7. Discussion on the contents of Flex-TEG status report for the 41st GRSP
8. AOB
9. Closing
Latest Flex-TEG Activities (4th Flex-TEG meeting)
Participants of 4th Flex-TEG meeting (2 April 2007, BASt, Bergisch Gladbach)
A. Konosu（Flex-TEG chairperson/J-MLIT/JARI）
B. Been（Flex-TEG secretariat/FTSS）
H. Inomata (J-MLIT/JASIC)
O. Zander, B. Lorenz (BASt)
D. Cesari (INRETS)
D. Gehring, P. Lessmann (BGS)
T. Kinsky, M. Zeugner, M. Erzgraeber (GM-E/ACEA)
O. Ries (VW/ACEA)
R. Fleischhacker (Porsche/ACEA)
A. Sipido, J. Ni (Ford)
H. Suzuki, I. Imaizumi (HONDA R&D/JAMA)
K. Wolff (SRS)
F. Minne (UTAC)
L. Thompson (TRL)
W. Liebers (TUV)
P. Haug (GE Plastics)
M. Burleigh (FTSS-UK)
T. Issiki (JARI)
Total: 24 attendances
Latest Flex-TEG Activities (4th Flex-TEG meeting)
Point 1: Finalization of the Flex-GT specifications
Impact Speed: 11.1 m/s
2000
Flex-GT prototype model
HBLE_x0z0
I: base
Tibia
Flex-GT prototype model
HI: base + 50 mm
500
300
BLE_x0z+
y = 0.6775x + 97.876
BLE_x+z0
200
300
400
-400
BLE_x-z-
45
Horizontal (mm)
400
HI: Impact height
(base=25mm)
y = 0.9913x - 13.673
(Rtibia = 0.82)
100
300
400
0
500
100
200
300
400
500
600
Human Model, Tibia Bending Moment, Max.-abs.- (Nm)
50
BP_x0z45
40
35
BP_x0z+
30
25
20
SP_x0z+
15
35
25
20
SP_x+z+
15
y = 0.4957x + 15.939
10
45
40
SP_x0z30
(RMCL = 0.40)
y = 0.6924x + 8.0156
(RMCL = 0.66)
10
5
SP_x+z0
5
0
SP_x+z-
10 15 20 25 30 35 40 45 50
Human Model, Knee MCL Elongation, Max. (mm)
0
200
50
50
0
-800
300
Knee-MCL
0
(HI)
200
Human Model, Tibia Bending Moment, Max.-abs.- (Nm)
5
200
400
0
500
Flex-GT prototype Model
Knee MCL Elongation
Max. (mm)
400
100
0
100
BLE_x-z+
BLE_x-z0
Human Model, Tibia Bending Moment, Max.-abs.- (Nm)
Flex-GT-prototype Model
Knee MCL Elongation
Max. (mm)
Vertical (mm)
Simplified
Car
models
y = 0.9977x - 12.325
(Rtibia = 0.90)
50
500
0
0
600
-1200
150
0
800
0
-1600
200
100
BLE_x+z-
(Rtibia = 0.73)
Flex-GTprototype
Model
300
BLE_x+z+
250
200
100
350
Flex-GT-prototype Model
Tibia Bending Moment (RCAL)
Max.-abs.- (Nm)
1400
BLE_x0z400
0
Flex-GT-prototype Model
Knee MCL Elongation
Max. (mm)
1600
SP_x0z0
400
Flex-GT-prototype Model
Tibia Bending Moment (RCAL)
Max.-abs.- (Nm)
Flex-GT-prototype Model
Tibia Bending Moment (RCAL)
Max.-abs.- (Nm)
450
1800
1000
600
500
Human Model
1200
Flex-GT prototype model
HI: base + 75 mm
BP_x0z0
40
35
30
25
20
15
10
y = 0.9119x + 2.0157
(RMCL = 0.83)
5
0
5
10 15 20 25 30 35 40 45 50
Human Model, Knee MCL Elongation, Max. (mm)
0
5
10 15 20 25 30 35 40 45 50
Human Model, Knee MCL Elongation, Max. (mm)
• To lift up the impact
height of the Flex-GT
can be obtained better correlation to the
SP_x-z+
SP_x-z0
human one.
SP_x-z-
Vertical line
• Flex-GT specification (need not
to change Flex-GT-prototype
specification) and its best
impact height is selected.
Latest Flex-TEG Activities (4th Flex-TEG meeting)
Point 1: Finalization of the Flex-GT specifications, contd.
Flex-GT
Constructions
Main body
Measurement Items
Outer Flesh
Normal
Measurement Items
Does not use for
injury assessment
Femur-3
(strain**)
Flesh
Thigh
flexible
bending
Neoprene and
rubber sheets
217 mm
Femur-2
(strain**)
Femur-1
(strain**)
Knee
flexible bending
with ligament
restraint system
297 mm
Impact
137 mm
ACL (Elongation)
PCL (Elongation)
MCL (Elongation)
Tibia top
flat surface
LCL (Elongation)
Tibia-1
(strain**)
Tibia-2
(strain**)
Leg
flexible
bending
Tibia-3
(strain**)
Tibia-4
(strain**)
134 mm
214 mm
294 mm
374 mm
** strain is converted to bending
moment using quasi-static 3 point
bone core bending test results
Latest Flex-TEG Activities (4th Flex-TEG meeting)
Point 2: Many of Flex-GT and Flex-GT-prototype test data is started to obtain
Agenda of 4th Flex-TEG meeting
5.3. Test results
5.3.1. Flexible Pedestrian Legform Impactor Type GT (FLEX-GT) Evaluation Test Results
5.3.2. Flexible Pedestrian Legform Impactor Type GT (FLEX-GT) Car Test Results
5.3.3. Flex-GT-prototype BASt Tests
5.3.4. Handling and Usage (Flex-GT-prototype)
5.3.5. Certification Histories (Flex-GT-prototype)
5.3.6. Flex-GT-prototype ACEA/BASt Tests at BASt/BGS March 2007
Car07A, Flex-GT (SN01)
Car07C, Flex-GT (SN01)
source: JAMA tests
Car07D, Flex-GT (SN01)
source: JAMA tests
Car07D, Flex-GT (SN02)
source: J-MLIT/NTSEL tests
source: J-MLIT/NTSEL tests
source: BASt/BGS tests
source: BASt/BGS tests
•Evaluation on Flex-GTprototype and Flex-GT
is just started.
•Flex-GT evaluation
tests will be continued
by this autumn, then
5th Flex-TEG meeting
will be held in this
autumn.
Thank you for your attentions!