SAE 2003 Govt/industry meeting - 
Jason Stammen - NHTSA Evaluation of the Hybrid III 10yo dummy


SLIDE 1:
NHTSA EVALUATION OF THE HYBRID IIII 10-YEAR-OLD DUMMY

Jason Stammen
Vehicle Research and Test Center, NHTSA


SLIDE 2:
OVERVIEW
 - Why a "10 year old" dummy?
 - history/background
 - NHTSA role in HIII-10C development
 - VRTC evaluation program
 - future work


SLIDE 3:
WHY A '10 YEAR OLD'?
 - NHTSA, advocates pushing booster use
 - Boosters made to protect kids up to 80 lbs
   * meet state requirements for use
   * no dummy to test these larger CRS


SLIDE 4:
BACKGROUND
JUN '00 SAE initiates HIII-10C development
NOV '00 TREAD enacted
JUL '01 1st HIII-10C prototype is evaluated
MAR '02 VRTC begins part 572 evaluation
DEC '02 Anton's Law enacted 


SLIDE 5:
NHTSA'S ROLE
 - attended/participated in SAE meetings
 - evaluated 1st prototype dummy
 - evaluating "production-intent" dummies


SLIDEs 6-8:
DUMMY DESCRIPTION
[photo of 10C dummy, close ups of featured-item construction]
weight = 77.6 lbs (35.3 kg)
sitting height = 28.5 in (72.4cm)
theoretical standing height = 51 in (129.5cm)

FEATURES:
 - instrumented shoulders with more realistic shape
 - thoracic instrumentation optional to chest ball-slider mechanism
 - adjustable lumbar angle to simulate slouch posture in children



SLIDE 9:
INSPECTION
- received drawings from each manufacturer - reviewd them for completeness, accuracy

- acquired two dummies - conducted part-by-part inspection vs. drawings

- reviewed external dimensions & weights


SLIDE 10:
COMPONENT TESTING
- TESTED HEAD, NECK, THORAX, KNEES, TORSO FLEX
  SAE-proposed test procedure and response corridors (Mertz et al, 2001 Stapp)

components within corridor, repeatable


SLIDE 11:
BOOSTER SEAT TESTING
- two dummies per test
- five seating configurations
	2 boosters, 3 non-booster (upright, slouched, belt-misuse)

[stills from crash video - video exised]


SLIDE 12:
BOOSTER SEAT TESTING
[table - HIC unlimited, neck occipital moment, lower neck Y moment, chest deflection (mm), chest acceleration (g), lumbar shear force (N)]

* Boosters make a difference
* minor durability problems solved


SLIDE 13:
VEHICLE SLED TESTING
 - 2000 model year large SUV
 - NCAP-derived crash pulse (25g, 35mph)
 - booster and non-booster situations


SLIDE 14:
VEHICLE SLED TESTING
[table]
* "submarining" = high lumbar forces
* some rib delamination present


SLIDE 15:
STATIC OOP AIRBAG TESTING
 - durability of neck structure/instrumentation - setup in head and chest-to-OP
 - utility of IR-Trace system


SLIDE 16:
STATIC OOP AIRBAG TESTING
table:
Upper neck tensile force (N)	4544
Upper neck X shear force (N)	2395
Neck Occipital Moment (Nm)	170 (E)
Lower Neck Tensile Force (N)	4259
Chest Deflection (mm)		23
Chest Acceleration (g)		70


 - neck load cells have sufficient capacity
 - neck components durable
 - IR-Trace displayed no problems


SLIDE 17:
TWO-DUMMY R&R TESTING
 - assess repeatability and reproducibility
 - rigid 213 seat, 75% energy pulse, 5 tests 
	(minimize non-dummy variation)


SLIDE 18:
TWO-DUMMY R&R TESTING
[table]


SLIDE 19:
THREE-DUMMY R&R TESTING
 - assess reproducibility: one full dummy from each manufacturer, one with half (upper & lower torso) build by each manufacturer
 - rigid 213 seat, FMVSS 213 pulse, 4 tests


SLIDE 20:
THREE-DUMMY R&R TESTING
[table]


SLIDE 21:
SUMMARY
- three HIII-10C conformed to drawings
- components meet SAE corridors
- boosters reduce head, neck, lumbar loads
- durable in severe airbag/sled environments
- good repeatability and reproducibility
- mixing parts doesn't affect performance


SLIDE 22:
REMAINING WORK

- put dummy in a crash test environment
- evaluate IR-Trace more thoroughly
- develop injury criteria


SLIDE 24:
	THANK YOU!!!