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Instrumentation for capture of high‐speed anatomical movement (923.1)
Author(s) -
Sochor Mark,
Heltzel Sara
Publication year - 2014
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.28.1_supplement.923.1
Subject(s) - acceleration , instrumentation (computer programming) , motion capture , computer science , torso , simulation , pelvis , crash , motion (physics) , physics , anatomy , medicine , artificial intelligence , classical mechanics , programming language , operating system
Objective: Describe the technique of instrumentation of the human body for capturing anatomic motion at high speed. A human body interacting with its environment is at risk for injury. Anatomic structures with viscoelastic properties do not behave in the same way at high speed. It's necessary to study these interactions when developing mechanical surrogates of the human body (crash test dummies). Way in which a crash dummy is able to replicate a human’s actual movement is called biofidelity. Methods: PMHS in this series were fresh frozen specimens thawed to room temperature. Instrumentation techniques which incorporate hardware into the spine and ribcage of the PMHS will be described. Video capture of these PMHS and the acceleration data were captured and compared in an automotive crash environment. Acceleration data filtered at industry standard and photo target tracking system compared to the post‐processed acceleration data. Force defection curves generated as well as excursion measurements for the head, thoracic spine, pelvis and lower extremities. Results: The PMHS moves similar to a live human subject in a high G environment as muscle reaction time is minimized and the baseline muscle tone is often overcome. Excursion of the PMHS head, thoracic spine and pelvis over several milliseconds shows the importance of anatomical movement in an acceleration environment. Conclusions: Instrumentation techniques have been developed. Techniques and motion capture are highly accurate and aid in developing surrogate tools for the motion of the human body for safety product development. Although PMHS do not have the baseline muscle tone of a live subject they do have realistic soft tissue strength (ligaments, tendons and other soft tissue load bearing structures). Accepted instrumentation techniques can help to describe how anatomical structures move relative to one another in environments the human body did not normally experience in it’s evolution. Grant Funding Source : National Highway Safety Administration