THOR-M 50 Male ATD Repeatability and Reproducibility in …€¦ · CV (%) 2.0% 0.6% Mean-6485.70...

THOR-M 50th Male ATD Repeatability and Reproducibility in

Qualification Tests Joseph McFadden, Kevin Moorhouse

NHTSA Vehicle Research & Test Center

Alena Hagedorn Transportation Research Center, Inc.

Under Contract to NHTSA Vehicle Research & Test Center

THOR Public Meeting January 20, 2015 Washington, D.C.

R&R (Qualification Tests)

• Initial basis for all tests are existing THOR Qualification Procedures (GESAC/Humanetics)

• Used revised and refined procedure as needed

• For each test both a qualitative response comparison and a quantitative response comparison are provided.

This is a U.S. Government Work not subject to copyright protection in the U.S. It may be copied and distributed without permission and without limitation.

• THOR Qualification Tests – Head Impact – Face Impact (Disc & Bar) – Neck (Forward Flexion, Extension, L&R Lateral Flexion) – Upper Thorax – Lower Thorax (L&R) – Not presented – Upper Abdomen – Lower Abdomen – Femur (L&R) – Knee Slider (L&R)


This is a U.S. Government Work not subject to copyright protection in the U.S. It may be copied and distributed without permission and without limitation.

• Quantification of R&R for each test

– ) • is standard deviation of repeated responses • is mean of repeated responses

– Repeatability: Calculate percent coefficient of variation (%CV)

of peak value for each individual dummy response (5 tests).

– Reproducibility: Calculate percent coefficient of variation (%CV) of peak value for all three dummy responses combined (15 tests).


= 100


%CV Score Category Color Scheme

0 to 5% Excellent

>5 to 8% Good

>8 to 10% Marginal (Acceptable)

>10% Poor (Unacceptable)

Head Impact Test R&R (Qualification Tests)


Mean 5587.55 2.31Std. Deviation 25.76 0.04

CV (%) 0.5% 1.8%Mean 5562.72 2.30

Std. Deviation 44.70 0.04CV (%) 0.8% 1.5%Mean 5587.16 2.29


Std. Deviation 40.66 0.03CV (%) 0.7% 1.4%

Time of Peak Force(ms)

Peak Force(N)

THOR M Head (2.0 ± 0.1 m/s)

All

MeasureDummyNo.

DO9799

DO9798

DL9207

Specification

R&R (Qualification Tests) Face Disc Impacts

R&R (Qualification Tests) Face Disc Impact


CV (%) 3.7% 2.2%Mean 10307.88 4.95



Std. Deviation 510.51 0.12CV (%) 5.1% 2.4%

THOR M Face- Disc (6.7 ± 0.1 m/s)Measure Peak

Force(N)

Time of Peak Force(ms)

Specification

DummyNo.

DO9799

All

DL9207

DO9798

R&R (Qualification Tests) Face Bar Impacts

R&R (Qualification Tests) Face Bar Impacts


CV (%) 3.4% 3.4%Mean 4710.00 8.07



Std. Deviation 439.07 0.41CV (%) 8.4% 5.3%

THOR M Face- Bar (3.6 ± 0.1 m/s)Dummy

No.Measure Peak Force

(N)Time of

Peak Force(ms)

DO9799

All

Specification

DL9207

DO9798

Neck Frontal Flexion (Accel. Pulse)


Neck Frontal Flexion (Y-Moment) R&R (Qualification Tests)

Neck Frontal Flexion Test Results


CV (%) 0.8% 1.5%Mean 53.90 54.15



Std. Deviation 1.87 2.57CV (%) 3.4% 5.0%

MeasureTHOR M Neck- Frontal (5.0 ± 0.1 m/s)

DO9799

All

Peak OC Moment

(N-m)

Time of Peak OC Moment

(ms)

Specification

DL9207

DO9798

DummyNo.

Neck Extension (Accel. Pulse)


Neck Extension (Y-Moment)


Neck Extension Test Results

Mean -105.12 51.51Std. Deviation 3.19 0.50

CV (%) 3.0% 1.0%Mean -108.56 47.39

Std. Deviation 1.39 0.35CV (%) 1.3% 0.7%Mean -104.41 49.31


Std. Deviation 3.07 1.84CV (%) 2.9% 3.7%

Time of Peak OC Moment

(ms)

THOR M Neck- Extension (5.0 ± 0.1 m/s)

DO9798

DO9799

All

Peak OC Moment

(N-m)

Specification

DL9207

DummyNo.

Measure

Neck Left Lateral Flexion (Accel. Pulse)


Neck Left Lateral Flexion (X-Moment)


Neck Left Lateral Flexion Test Results


CV (%) 0.6% 1.8%Mean 35.28 24.77



Std. Deviation 2.47 0.49CV (%) 6.7% 2.0%

THOR M Neck- Left Lateral Flexion (3.4 ± 0.1 m/s)Dummy

No.Measure Peak OC

Moment (N-m)

Time of Peak OC Moment (ms)

DO9798

DO9799

All

Specification

DL9207

Neck Right Lateral Flexion (Accel. Pulse)


Neck Right Lateral Flexion (X-Moment)


Neck Right Lateral Flexion Test Results

Mean -39.85 24.29Std. Deviation 0.68 0.55

CV (%) 1.7% 2.3%Mean -34.76 25.26



Std. Deviation 2.86 0.60CV (%) 7.9% 2.4%

DO9798

DO9799

All

Specification

DL9207

THOR M Neck- Right Lateral Flexion (3.4 ± 0.1 m/s)Dummy

No.Measure Peak OC

Moment (N-m)

Time of Peak OC Moment (ms)

Upper Thorax Impact



Mean 2765.76 -45.38Std. Deviation 40.48 0.40

CV (%) 1.5% 0.9%Mean 3002.33 -44.67

Std. Deviation 73.43 0.64CV (%) 2.4% 1.4%Mean 2851.90 -42.85


Std. Deviation 114.13 1.32CV (%) 4.0% 3.0%

THOR M Thorax- Upper (4.3 ± 0.1 m/s)Peak Force

(N)Avg. Peak

X Deflection(mm)

Measure

DO9799

All

DO9798

DL9207

DummyNo.

Specification

Upper Abdomen Impact




CV (%) 1.2% 2.7%Mean 6923.16 -101.40



Std. Deviation 221.33 4.49CV (%) 3.3% 4.2%

Specification

DummyNo.

Peak Force

(N)

Measure

All

DL9207

DO9798

DO9799

Deflection @ Peak Force

(mm)

THOR M Abdomen - Upper (6.7 ± 0.1 m/s)

R&R (Qualification Tests) Lower Abdomen Impact



CV (%) 2.8% 0.6%Mean 4623.22 -100.29



Std. Deviation 381.57 2.16CV (%) 8.1% 2.2%

Specification

DummyNo.

All

DL9207

DO9798

DO9799

THOR M Abdomen - Lower (4.3 ± 0.1 m/s)Measure Peak

Force(N)

Deflection at Peak Force (mm)

Femur Impact (Left)




CV (%) 0.9% 1.7%Mean 4822.48 1.56



Std. Deviation 152.36 0.03CV (%) 3.2% 1.6%

DO9798

DO9799

All

THOR M Femur- Left (2.6 ± 0.1 m/s)Dummy


(N)Time of

Peak Force(ms)

Specification

DL9207

Femur Impact (Right) R&R (Qualification Tests)



CV (%) 0.5% 1.3%Mean 4779.34 1.53



Std. Deviation 156.25 0.09CV (%) 3.4% 6.0%

DO9799

All

Specification

DL9207

DO9798

THOR M Femur- Right (2.6 ± 0.1 m/s)Dummy


(N)Time of

Peak Force(ms)

Knee Slider (Left) R&R (Qualification Tests)


Mean -6989.79 -20.62Std. Deviation 103.92 0.09

CV (%) 1.5% 0.4%Mean -6696.26 -20.32

Std. Deviation 57.88 0.06CV (%) 0.9% 0.3%Mean -6353.57 -20.40


Std. Deviation 107.75 0.11CV (%) 1.6% 0.5%

DO9798

DO9799

All

DummyNo.

Measure

Specification


(mm)

DL9207

Peak Force (N)

THOR M Knee Slider- Left (2.20 ± 0.05 m/s)

Knee Slider (Right)



Mean -6623.64 -20.29Std. Deviation 387.71 0.50

CV (%) 5.9% 2.4%Mean -6688.77 -20.03



Std. Deviation 181.84 0.21CV (%) 2.8% 1.0%

THOR M Knee Slider- Right (2.20 ± 0.05 m/s)

DL9207

DO9798

DO9799

All

DummyNo.

Measure

Specification

Peak Force (N)


(mm)

R & R %CV Summary Test Repeatability Reproducibility Parameter

9207 9798 9799 AllHead Impact Peak Force (N)Head Impact Time of Peak Force (ms)Face Disc Peak Force (N)Face Disc Time of Peak Force (ms)Face Bar Peak Force (N)Face Bar Time of Peak Force (msec)Neck Frontal Peak OC Moment (N-m)Neck Frontal Time of Peak OC Moment (ms)Neck Extension Peak OC Moment (N-m)Neck Extension Time of Peak OC Moment (ms)Neck Left Peak OC Moment (N-m)Neck Left Time of Peak OC Moment (ms)Neck Right Peak OC Moment (N-m)Neck Right Time of Peak OC Moment (ms)Upper Thorax Peak Force (N)Upper Thorax Avg. Peak X Deflection (mm)Upper Abdomen Peak Force (N)Upper Abdomen Deflection at Peak Force (mm)Lower Abdomen Peak Force (N)Lower Abdomen Deflection at Peak Force (mm)Left Femur Peak Force (N)Left Femur Time of Peak Force (ms)Right Femur Peak Force (N)Right Femur Time of Peak Force (ms)Left Knee Slider Peak Force (N)Left Knee Slider Deflection at Peak Force (mm)Right Knee Slider Peak Force (N)Right Knee Slider Deflection at Peak Force (mm)

R & R %CV Summary Head

Test Repeatability Reproducibility Parameter

9207 9798 9799 AllHead Impact Peak Force (N)Head Impact Time of Peak Force (ms)

R & R %CV Summary Face

Test Repeatability Reproducibility Parameter9207 9798 9799 All

Face Disc Peak Force (N)Face Disc Time of Peak Force (ms)Face Bar Peak Force (N)Face Bar Time of Peak Force (msec)

R & R %CV Summary Neck


Neck Frontal Peak OC Moment (N-m)Neck Frontal Time of Peak OC Moment (ms)Neck Extension Peak OC Moment (N-m)Neck Extension Time of Peak OC Moment (ms)Neck Left Peak OC Moment (N-m)Neck Left Time of Peak OC Moment (ms)Neck Right Peak OC Moment (N-m)Neck Right Time of Peak OC Moment (ms)

R & R %CV Summary Upper Thorax


Upper Thorax Peak Force (N)Upper Thorax Avg. Peak X Deflection (mm)

R & R %CV Summary Abdomen


Upper Abdomen Peak Force (N)Upper Abdomen Deflection at Peak Force (mm)Lower Abdomen Peak Force (N)Lower Abdomen Deflection at Peak Force (mm)

R & R %CV Summary Legs


Left Femur Peak Force (N)Left Femur Time of Peak Force (ms)Right Femur Peak Force (N)Right Femur Time of Peak Force (ms)Left Knee Slider Peak Force (N)Left Knee Slider Deflection at Peak Force (mm)Right Knee Slider Peak Force (N)Right Knee Slider Deflection at Peak Force (mm)

Summary R & R

Quantities represent the no. of % CV Ratings in each Category. Repeatability %CV are based on 5 tests, Reproducibility %CV are based on 15 tests.

THOR M 50th Body Region

E G M(A) U E G M(A) UHead 6 2Face 11 1 1 2 1Neck 24 6 2Thorax 6 2Abdomen 12 3 1Legs 23 1 7 1Total Qty. 82 2 21 5 2Total (%) 97.6% 2.4% 75.0% 17.9% 7.1%

Repeatability Reproducibility

THOR-M 50 Male ATD Repeatability and Reproducibility in …€¦ · CV (%) 2.0% 0.6% Mean-6485.70...

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