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Evaluation of ES-2 by the Occupant Safety Research Partnership of USCAR presented by Annette L. Irwin representing the Alliance of Automobile Manufacturers and the Organisation Internationale des Constructeurs d ’ Automobiles Background

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evaluation of es 2 by the occupant safety research partnership of uscar

Evaluation of ES-2by theOccupant Safety Research Partnershipof USCAR

presented by

Annette L. Irwin

representing the

Alliance of Automobile Manufacturers

and the

Organisation Internationale

des Constructeurs d’Automobiles

background
Background
  • Occupant Safety Research Partnership of USCAR Conducted Tests with ES-2
    • Full-Scale Vehicle Tests
    • Biofidelity Tests of ISO TR 9790
  • Results Published in 46th Stapp
    • Byrnes, et al., “ES-2 Dummy Biomechanical Responses,” Paper 2002-22-0018
purpose
Purpose
  • To Evaluate
    • Modifications from EuroSID-1 to ES-2
    • Biofidelity
    • Left-to-Right Symmetry
    • Repeatability
    • Reproducibility
full scale testing
Full-Scale Testing
  • FMVSS 214 Configuration at 54 km/h
  • 2 Small Sedans
    • EuroSID-1 Driver & Left Rear Passenger
    • ES-2 Driver & Left Rear Passenger
  • 2 Large Sedans
    • EuroSID-1 Driver & Left Rear Passenger
    • ES-2 Driver & Left Rear Passenger
results of full scale testing with small sedan
Results of Full-Scale Testing WithSmall Sedan
  • EuroSID-1 Exhibited Rib Binding
  • ES-2 Did Not Exhibit Rib Binding
  • ES-2 Exhibited Rib Oscillation
results of full scale testing with large sedan
Results of Full-Scale Testing With Large Sedan
  • EuroSID-1 Exhibited Pubic “Noise” Spike
  • ES-2 Did Not Exhibit Pubic “Noise” Spike
biofidelity testing
Biofidelity Testing
  • ISO TR 9790 (1999)
    • 23 Drop, Pendulum & Sled Tests
    • Assess Biofidelity of the Head, Neck, Shoulder, Thorax, Abdomen, and Pelvis
    • 3 to 6 Repeat Tests Conducted
    • Some Tests Conducted on Both Sides
    • Some Tests Conducted on Two Different ES-2 Dummies
results of biofidelity testing head test 1 200 mm drop onto rigid surface9

200

Corridor

150

Pk. Resultant Head Accel. (G)

100

50

ES-2

0

Results of Biofidelity TestingHead Test 1 – 200 mm Drop onto Rigid Surface
results of biofidelity testing neck test 2 6 7 g sled test11

70

60

Corridor

50

40

Pk. Flexion Angle (degrees)

30

20

10

ES-2

0

Results of Biofidelity TestingNeck Test 2 – 6.7 G Sled Test
results of biofidelity testing shoulder test 3 12 2 g sled test

25

Corridor

20

15

Pk. Lateral T1 Accel. (G)

10

5

ES-2

0

Results of Biofidelity TestingShoulder Test 3 – 12.2 G Sled Test
results of biofidelity testing thorax test 2 6 7 m s rigid pendulum impact

8

6

ES-2

Corridor

Pendulum Force (kN)

4

2

0

0

10

20

30

40

50

Time (ms)

Results of Biofidelity TestingThorax Test 2 – 6.7 m/s Rigid Pendulum Impact
results of biofidelity testing abdomen test 1 1 m drop onto rigid armrest

10

8

ES-2

Corridor

6

Armrest Force (kN)

4

2

0

0

10

20

30

40

50

Time (ms)

Results of Biofidelity TestingAbdomen Test 1 - 1 m Drop onto Rigid Armrest
results of biofidelity testing pelvis test 1 6 m s rigid pendulum

8

Corridor

6

Pk. Pendulum Force (kN)

4

2

ES-2

0

Results of Biofidelity TestingPelvis Test 1 - 6 m/s Rigid Pendulum
results of biofidelity testing es 2 ratings by body region

10

Excellent

8

Good

6

Fair

Biofidelity Rating

4

Marginal

2

Unacceptable

0

ES-2

Abd.

Neck

Shldr.

Head

Pelvis

Thorax

Overall

Results of Biofidelity TestingES-2 Ratings by Body Region
es 2 biofidelity compared to eurosid 1

Neck

Shoulder

10

Thorax

Excellent

8

Good

6

Fair

Biofidelity Rating

4

Marginal

2

Unacceptable

0

Abd.

Neck

Shldr.

Head

Pelvis

Thorax

Overall

ES-2

EuroSID-1

ES-2 Biofidelity Compared to EuroSID-1

ES-2 Exhibits Degraded Biofidelity of the

results of biofidelity testing reproducibility concerns 8 9 m s sled

8

6

Corridor

TC ES-2

Abdomen Force (kN)

NHTSA ES-2

4

2

0

0

10

20

30

40

Time (ms)

Results of Biofidelity TestingReproducibility Concerns – 8.9 m/s Sled
results of biofidelity testing reproducibility concerns 6 8 m s sled

2 Tests With

NHTSA

ES-2

Dummy

4 Tests With

TC ES-2 Dummy

Results of Biofidelity TestingReproducibility Concerns – 6.8 m/s Sled
results of biofidelity testing reproducibility concerns 6 8 m s sled20
Results of Biofidelity TestingReproducibility Concerns – 6.8 m/s Sled

28% Difference

in Peak Pelvic

Acceleration

Between NHTSA

and TC Dummies

results of biofidelity testing
Results of Biofidelity Testing
  • Overall Biofidelity Rated Only Fair
    • Neck, Shoulder & Thorax Were Less Biofidelic Than EuroSID-1
  • Repeatability Acceptable
  • Left-to-Right Symmetry Acceptable
  • Reproducibility Not Acceptable
es 2 biofidelity compared to worldsid thorax test 2 6 7 m s rigid pendulum impact

8

6

ES-2

Corridor

Pendulum Force (kN)

4

WorldSID

2

prototype

0

0

10

20

30

40

50

Time (ms)

ES-2 Biofidelity Compared to WorldSIDThorax Test 2 – 6.7 m/s Rigid Pendulum Impact
es 2 biofidelity compared to worldsid abdomen test 1 1 m drop onto rigid armrest

10

8

ES-2

Corridor

6

Armrest Force (kN)

4

WorldSID

prototype

2

0

0

10

20

30

40

50

Time (ms)

ES-2 Biofidelity Compared to WorldSIDAbdomen Test 1 - 1 m Drop onto Rigid Armrest
es 2 biofidelity compared to worldsid pelvis tests 1 2 rigid pendulum impacts

20

15

ES-2

WorldSID

Pendulum Force (kN)

10

prototype

Corridor

5

0

4

6

8

10

12

Pendulum Velocity (m/s)

ES-2 Biofidelity Compared to WorldSIDPelvis Tests 1 & 2 – Rigid Pendulum Impacts
es 2 biofidelity compared to worldsid

10

Excellent

8

Good

6

Fair

Biofidelity Rating

4

Marginal

2

Unacceptable

0

ES-2

Abd.

Neck

Shldr.

Head

Pelvis

Thorax

Overall

WorldSID

prototype

ES-2 Biofidelity Compared to WorldSID
conclusions
Conclusions
  • Rib Binding Was Not Observed in Limited Tests With ES-2
  • Pubic “Noise” Spikes Were Not Observed in Limited Tests With ES-2
  • Rib Oscillations Were Observed With ES-2
conclusions continued
Conclusions - continued
  • Overall ES-2 Was Not Biofidelic
    • Rated Only Fair
  • Repeatability, Left-to-Right Symmetry, and Durability Were Acceptable
  • Reproducibility Was Not Acceptable
  • Every Body Region of ES-2 is Less Biofidelic Than WorldSID Prototype
acknowledgments
Acknowledgments
  • Transport Canada
    • Providing ES-2 Dummy
    • Conducting Tests & Providing Data
  • NHTSA
    • Providing ES-2 Dummy
    • Conducting Tests & Providing Data