Advisor

Williams, N. Lakiesha

Committee Member

Wardlaw, L. Jennifer

Committee Member

Liao, Jun

Committee Member

Horstemeyer, Mark

Date of Degree

8-1-2010

Document Type

Graduate Thesis - Open Access

Degree Name

Master of Science

College

James Worth Bagley College of Engineering

Department

Department of Agricultural and Biological Engineering

Abstract

The ultrastructural mechanism for strain rate sensitivity of collagenous tissue has not been well studied at the collagen fibril level. The objective is to reveal the mechanistic contribution of the collagen fibril to strain rate sensitivity. Collagen fibrils underwent significantly greater fibril strain relative to global tissue strain at higher strain rates. A better understanding of tendon mechanisms at lower hierarchical levels would help establish a basis for future development of constitutive models and assist in tissue replacement design. High rate mechanical property of tendon was also studied. Tendon was compressed under high strain rate (550 /s) using a polycarbonate split Hopkinson pressure bar (PSHPB). The objectives are to investigate the tissue behavior of porcine tendon at high rates. Tendon’s high rate behavior was compared with brain and liver at both hydrated and dehydrated states to investigate how water content and ultrastructural affect high rate responses of soft tissues.

URI

https://hdl.handle.net/11668/15346

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