Fiber-reinforced polymer (FRP) composite materials are being developed for structural orthopaedic implant applications. The mechanical behavior, particularly the strength, of FRP composites is significantly influenced by fiber/matrix interfacial bond strength. Interfacial bond strength is known to be potentially susceptible to degradation in physiologic environments, and thus is an important area of research for the development of durable FRP composite biomaterials. A relatively simple interfacial bond strength technique has been developed by TRI/ Princeton. We have further implemented and further developed this technique for addressing issues relevant to the development and evaluation of FRP composite biomaterials. In this paper, we present a detailed description of this test technique and outline the methods for sample fabrication, sample testing to determine ultimate and fatigue strength, and data analysis in sufficient detail for others to reproduce this interfacial bond strength and durability measurement technique. Potential test problems leading to erroneous test results and further development areas for this technique are also addressed.
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