Accession Number : AD1018893


Title :   Characterization of Vertical Impact Device Acceleration Pulses Using Parametric Assessment: Phase 3, WIAMan Seat


Descriptive Note : Technical Report,01 Jan 2013,30 Jun 2016


Corporate Author : OAK RIDGE INST FOR SCIENCE AND EDUCATION TN OAK RIDGE


Personal Author(s) : Perry,Chris ; Burneka,Chris ; Christopher,Rachael ; Albery,Chris


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/1018893.pdf


Report Date : 01 Jul 2016


Pagination or Media Count : 96


Abstract : Phase III of a research effort using the Vertical Impact Device (VID) located in Bldg 824, Wright-Patterson AFB OH., was conducted to continue research of the facility's performance capabilities. The initial performance requirements for the VID to support the WIAMan program were impact acceleration pulses over 300 G with pulse time-to-peak values in the 5 to 10 m/s range, and maximum velocity changes of greater than 32 ft/s or 9.8 m/s (Phase I), and this was followed by a new requirement to exceed 10 m/s (Phase II). Additional program requirements were then defined to produce velocity changes from 13 to 20 ft/s, approximately 4 - 6 m/s, with a time-to-peak velocity change of 5 ms to 10ms as input to a test seat, which became the focus of Phase III. The Phase III test program objectives were to determine the VID pulse characteristics using two specially designed seat fixtures and associated restrained manikins that differed in total weight on the VID carriage. The experimental design consisted of two different seat configurations with a restrained manikin in each configuration. One configuration consisted of a seat structure and a 50% Hybrid III male manikin (159 lb) with a total test weight of 309 lb, and was referred to as the WS1 configuration. The second seat configuration consisted of a seat structure and a GARD manikin (190 lb) with a total test weight of 807 lb, and was referred to as the WS2 configuration. Each seat was tested at different drop heights and using different VID carriage felt attenuators. Test data indicated that the felt attenuators had a greater influence on the carriage acceleration and time-to-peak velocity than the total weight added to the VID carriage. The testing with the WS1 and WS2 set-up showed that the VID facility with either weight configuration produced overall velocity changes and time-to-peak velocity changes with the limits established by the WIAMan program.


Descriptors :   test facilities , impact tests , blast injuries , biomechanics , seats , Air Force facilities


Subject Categories : Test Facilities, Equipment and Methods
      Medicine and Medical Research
      Mechanics
      Test Facilities, Equipment and Methods
      Medicine and Medical Research
      Mechanics
      Test Facilities, Equipment and Methods
      Medicine and Medical Research
      Mechanics


Distribution Statement : APPROVED FOR PUBLIC RELEASE