Response of Thoraco-Abdominal Tissue in High-Rate Compression.

Autor:	Seifert J; Department of Biomedical Engineering, Marquette University and Medical College of Wisconsin, 5000 West National Avenue, Research 151, Milwaukee, WI 53295; Zablocki Veterans Affairs Medical Center, 5000 W National Avenue, Milwaukee, WI 53295., Koser J; Department of Biomedical Engineering, Marquette University and Medical College of Wisconsin, 5000 West National Avenue, Research 151, Milwaukee, WI 53295; Department of Neurosurgery, Medical College of Wisconsin, 9200 W Wisconsin Avenue, Milwaukee, WI 53226; Zablocki Veterans Affairs Medical Center, 5000 W National Avenue, Milwaukee, WI 53295., Shah AS; Department of Neurosurgery, Medical College of Wisconsin, 9200 W Wisconsin Avenue, Milwaukee, WI 53226; Zablocki Veterans Affairs Medical Center, 5000 W National Avenue, Milwaukee, WI 53295., Frazer LL; Southwest Research Institute, 6220 Culebra Road, San Antonio, TX 78238-5166., Yoganandan N; Department of Neurosurgery, Medical College of Wisconsin, 9200 W Wisconsin Avenue, Milwaukee, WI 53226; Zablocki Veterans Affairs Medical Center, 5000 W National Avenue, Milwaukee, WI 53295., Shender BS; Naval Air Warfare Center, Aircraft Division, 22347 Cedar Point Road, Building 2185, Patuxent River, MD 20670., Sheehy JB; Naval Air Warfare Center, Aircraft Division, 22347 Cedar Point Road, Building 2185, Patuxent River, MD 20670., Paskoff G; Naval Air Warfare Center, Aircraft Division, 22347 Cedar Point Road, Building 2185, Patuxent River, MD 20670., Bentley T; Office of Naval Research, 875 N Randolph Street, Arlington, VA 22217., Nicolella DP; Southwest Research Institute, 6220 Culebra Road, San Antonio, TX 78238-5166., Stemper BD; Department of Biomedical Engineering, Marquette University and Medical College of Wisconsin, 5000 West National Avenue, Research 151, Milwaukee, WI 53295; Department of Neurosurgery, Medical College of Wisconsin, 9200 W Wisconsin Avenue, Milwaukee, WI 53226; Zablocki Veterans Affairs Medical Center, 5000 W National Avenue, Milwaukee, WI 53295.
Jazyk:	angličtina
Zdroj:	Journal of biomechanical engineering [J Biomech Eng] 2023 Mar 01; Vol. 145 (3).
DOI:	10.1115/1.4056062
Abstrakt:	Body armor is used to protect the human from penetrating injuries, however, in the process of defeating a projectile, the back face of the armor can deform into the wearer at extremely high rates. This deformation can cause a variety of soft and hard tissue injuries. Finite element modeling (FEM) represents one of the best tools to predict injuries from this high-rate compression mechanism. However, the validity of a model is reliant on accurate material properties for biological tissues. In this study, we measured the stress-strain response of thoraco-abdominal tissue during high-rate compression (1000 and 1900 s-1) using a split Hopkinson pressure bar (SHPB). High-rate material properties of porcine adipose, heart, spleen, and stomach tissue were characterized. At a strain rate of 1000 s-1, adipose (E = 4.7 MPa) had the most compliant stress-strain response, followed by spleen (E = 9.6 MPa), and then heart tissue (E = 13.6 MPa). At a strain rate of 1900 s-1, adipose (E = 7.3 MPa) had the most compliant stress-strain response, followed by spleen (E = 10.7 MPa), heart (E = 14.1 MPa), and stomach (E = 32.6 MPa) tissue. Only adipose tissue demonstrated a consistent rate dependence for these high strain rates, with a stiffer response at 1900 s-1 compared to 1000 s-1. However, comparison of all these tissues to previously published quasi-static and intermediate dynamic experiments revealed a strong rate dependence with increasing stress response from quasi-static to dynamic to high strain rates. Together, these findings can be used to develop a more accurate finite element model of high-rate compression injuries. (Copyright © 2023 by ASME.)
Databáze:	MEDLINE
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