COMPARISON OF HIGH & LOW SPEED REAR-IMPACT HEAD & NECK INJURY RISK MEASURES RELATED TO OCCUPANT SIZE & VEHICLE SEAT AND VEHICLE SEAT STRENGTH CHARACTERISTICS

摘要: This study demonstrates the use of efficient inferred statistical “factorial methods” for scientifically evaluating, with a relatively few tests, rear-impact occupant “head and neck injury risk” performance 2 different types vehicle front seats, adjustable headrests, when various size occupants are subjected to high low impact severities. The seat studied included stronger “belt-integrated seat” (BIS) designs, restraints attached having strength levels beyond 14 kN, more common but weaker single recliner (SR) without only about 3.2 kN strength. Sled-body-buck systems full barrier tests were run “matched pairs” surrogates in at speed changes 12.5 50 kph. Three sizes Hybrid-III adult (i.e. 52 kg small female, 80 average male, an male surrogate ballasted 110 kg) used evaluations. Also, some 6 year-old child located behind seats due interest potential from collapsing seats. 2-level factorial method, combined biomechanical ratio comparison “student-t” test evaluation, compare safety designs. resulting data analysis indicates that, mid range rear severity 20 kph), BIS tend provide greatly improved “head-neck” protection over SR type both seated children. At 19 kph) there was no significant difference between either types, except that headrests could be improved.