SYMPOSIA PAPER Published: 01 January 1996
STP16074S

Methods of Detecting and Predicting Microfracture in Titanium

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The mechanics governing the interface between implant surfaces and tissues or between coatings and bulk implant materials is important, particularly for titanium alloys, because of their notch sensitivity. Our work on porous coated titanium has focused on three areas related to interfaces: determining the governing mode of fatigue, detecting incipient damage and monitoring damage accumulation, and quantifying, analytically, stresses at regions of local stress intensification. In this paper, we review our work on fatigue of titanium, extend our acoustic emission (AE) work, in which a protocol for analyzing AE signals in the frequency domain is presented, and introduce a coupled global/local finite element (FE) approach to determine local stresses at any region of an implant.

Author Information

Kohn, DH
School of Dentistry, and Bioengineering Program, University of Michigan, Ann Arbor, MI
Ko, CC
School of Dentistry, and Bioengineering Program, University of Michigan, Ann Arbor, MI University of Minnesota, Minneapolis, MN
Hollister, SJ
University of Michigan, Ann Arbor, MI
Snoeyink, D
School of Dentistry, and Bioengineering Program, University of Michigan, Ann Arbor, MI
Awerbuch, J
Drexel University, Philadelphia, PA
Ducheyne, P
University of Pennsylvania, Philadelphia, PA
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Details
Developed by Committee: F04
Pages: 117–135
DOI: 10.1520/STP16074S
ISBN-EB: 978-0-8031-5330-1
ISBN-13: 978-0-8031-2010-5