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Methods of Detecting and Predicting Microfracture in Titanium
Book chapter

Methods of Detecting and Predicting Microfracture in Titanium

D H Kohn, C C Ko, S J Hollister, D Snoeyink, J Awerbuch and P Ducheyne
Medical Applications of Titanium and Its Alloys: The Material and Biological Issues, pp 117-135
01 Jan 1996

Abstract

Acoustic Emission Finite Element Analysis Fracture Microstructure Porous Coating Titanium Alloy/ti-6al-4v
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.

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