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NPACS Dummy Design. N. Rangarajan, B. Seck GESAC, Inc H. Goerlitz Stiftung Warentest S. Kerbl ÖAMTC. Presentation Outline. Project organisation Project objectives Design of small 3-year old dummy. Project Organisation. Project Organisation. Project sponsored by NPACS committee
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NPACS Dummy Design N. Rangarajan, B. Seck GESAC, Inc H. Goerlitz Stiftung Warentest S. Kerbl ÖAMTC GESAC, Inc
Presentation Outline • Project organisation • Project objectives • Design of small 3-year old dummy GESAC, Inc
Project Organisation GESAC, Inc
Project Organisation • Project sponsored by NPACS committee • Development contract monitored by ÖAMTC • Funded by customers GESAC, Inc
Project Objectives GESAC, Inc
Project Objectives • NPACS needs to develop a unique and consistent methodology to test and report on child restraints • The prototypes initially designed by Kiel university need improvement in mass, and manageability • Henry, Stefan : please put in a couple of slides here GESAC, Inc
Project Objectives • Design six sizes of child manikins for evaluating and testing child restraint systems • Meet European anthropometric shape requirements for each size GESAC, Inc
Project Objectives • Deliver small 3-year old dummy in December, 2006 for comments by customers • Customer evaluation to be coordinated by ÖAMTC • Deliver all other dummies by 1st quarter, 2007 GESAC, Inc
Dummy Sizes GESAC, Inc
Family Photo GESAC, Inc
Design Requirements • Use commercially available, standard fasteners • Design scalable dummies • Allow for simple assembly and disassembly • Dummies should be robust and easy to handle GESAC, Inc
Design Requirements • Dummies to have anthropometrically correct shapes and masses, including segment masses • Dummies to have “human-like” range of motion • Weight of the 150 cm dummy to be limited to 20 kg GESAC, Inc
Design Requirements • Allow for simple assembly and disassembly • Dummies should be robust and easy to handle GESAC, Inc
Design of small 3-year old dummy GESAC, Inc
Sources of Data • Biomechanical bases for CRABI and Hybrid III child dummies. 41st Stapp conference. • Anthropometry of US infants and children. SAE publication SP 394. GESAC, Inc
Small 3 – Year Old Dummy anthropometry GESAC, Inc
Small 3 – Year Old Dummy Range of Motion GESAC, Inc
Assembled Dummy GESAC, Inc
Skeletal Assembly GESAC, Inc
Material Specifications • Vinyl and foam flesh. • Flesh feels “human like”. • Skeleton fabricated out of commercially available parts. GESAC, Inc
Degrees of Freedom at Major Joints 3 • Shoulder joint (3 degrees of freedom). • Hinge: abduction, adduction. • Pivot: flexion, extension. • Pivot: lateral and medial rotations. 1 2 GESAC, Inc
Degrees of Freedom at Major Joints (Continued) • Knee and elbow joints (1 degree of freedom). • Hinge: flexion, extension. GESAC, Inc
Degrees of Freedom at Major Joints (Continued) • Hip joint (2 degrees of freedom). • Hinge: abduction, adduction. • Pivot: flexion, extension. 1 2 GESAC, Inc
Head Insert GESAC, Inc
Cervical Spine Assembly GESAC, Inc
Clavicle shoulder assembly GESAC, Inc
Shoulder Assembly GESAC, Inc
Thoracic Spine Assembly GESAC, Inc
Pelvis Assembly GESAC, Inc
Hip Joint Assembly GESAC, Inc
Upper Arm Bone Assembly GESAC, Inc