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Title: The evaluation of new multi-material human soft tissue simulants for sports impact surrogates
Authors: Payne, Thomas
Mitchell, Sean R.
Bibb, Richard J.
Waters, Mark
Keywords: FEA
Issue Date: 2015
Publisher: © Elsevier Ltd
Citation: PAYNE, T. ... et al, 2015. The evaluation of new multi-material human soft tissue simulants for sports impact surrogates. Journal of the Mechanical Behavior of Biomedical Materials, 41, pp.336-356.
Abstract: Previous sports impact reconstructions have highlighted the inadequacies in current measures to evaluate the effectiveness of personal protective equipment (PPE) and emphasised the need for improved impact surrogates that provide a more biofidelic representation of human impact response.The skin, muscle and subcutaneous adipose tissues were considered to constitute the structures primarily governing the mechanical behaviour of the human body segment. A preceding study by Payne et al. (in press) investigated the formulation and characterisation of muscle tissue simulants. The present study investigates the development of bespoke blends of additive cure polydimethysiloxane (PDMS) silicones to represent both skin and adipose tissues using the same processes previously reported. These simulants were characterised mechanically through a range of strain rates and a range of hyperelastic and viscoelastic constitutive models were evaluated to describe their behaviour.To explore the worth of the silicone simulants, finite element (FE) models were developed using anthropometric parameters representative of the human thigh segment, derived from the Visible Human Project. The multi-material silicone construction was validated experimentally and compared with both organic tissue data from literature and commonly used single material simulants: Dow Corning Silastic 3480 series silicones and ballistics gelatin when subject to a representative sports specific knee impact. Superior biofidelic performance is reported for the PDMS silicone formulations and surrogate predictions.
Description: This is the author’s version of a work that was accepted for publication in the Journal of the Mechanical Behavior of Biomedical Materials. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published at: http://dx.doi.org/10.1016/j.jmbbm.2014.09.018
Version: Accepted for publication
DOI: 10.1016/j.jmbbm.2014.09.018
URI: https://dspace.lboro.ac.uk/2134/16595
Publisher Link: http://dx.doi.org/10.1016/j.jmbbm.2014.09.018
ISSN: 1751-6161
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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