Heather Rhule
2002 SAE Govt/Industry meeting 


SLIDE 1:
SID IIs DUMMY DURABILITY


SLIDE 2:
SID IIs DUMMY 
photos showing: 
 - shoulder rib guide
 - pot housing
 - pot shaft
 - thorax & abdomen rib guides


SLIDE 3:
OVERVIEW OF DURABILITY ISSUES
 - extensive testing revealed several durability issues
	* pot shafts bent at rib-end
	* pot shafts bent mid-shaft
	* pot housing crushed
	* pot housing inset
	* ribs deformed
	* damping material separated from rib
 - mechanism of damage identified
 - modification concepts by VRTC appear promising
 - OSRP, FTSS and NHTSA working toward a solution


SLIDE 4:
POT BOTTOM-OUT	

mechanism [photo]
- ribs@max deflection = pot bottom-out

test condition [diagram]
- 15 mph Rigid Abdomen plate offset F(t)

damages
- pot housing crushed [photo]
- pot shaft bent [photo]


SLIDE 5:
THORAX & ABDOMEN RIB JUMP
mechanism
 - rib jump [photo]

test conditions
 - 15mph rigid & padded abdomen plate offset [diagram]
 - 15mph rigid & padded thorax plate offset [diagram]

damages
 - gouges in damping material [photo]
 - pot shaft bent [photo]
 - ribs deformed [photo]


SLIDE 6:
SHOULDER RIB JUMP

mechanism
 - rib jump [photo]

test conditions
 - in-vehicle static airbag OOP [diagram]
 - 15mph rigid & padded abdomen plate offset [diagram]

damages
 - rib deformation  [photo]
 - pot housing inset  [photo]
 - pot shaft bent  [photo]
 - damping material separated  [photo]


SLIDE 7:
SUMMARY
- SID IIs dummy has durability problems

- mechanisms causing damage are:
	* potentiometer bottom-out
	* thorax & abdomen rib jump
 	* shoulder rib jump

- VRTC has suggested possible minimally invasive modifications to remedy situation

- OSRP, FTSS and NHTSA working toward resolving durability problems


SLIDE 8:

	THANK YOU