Investigation of Fracture in an Interface Crack Between Bone Cement and Stainless Steel

Abstract

Interface strength is considered as one of the most influential factors in the long-term durability of the replaced joint in cemented total hip replacement. Several researchers have suggested that the damage initiation in a replaced joint is a mechanical phenomenon primarily taking place in the vicinity of cement-prosthesis interface. In this study, the fracture behavior of a crack at the interface of cement-prosthesis was investigated both experimentally and theoretically under static loading conditions. The finite element method, and then the maximum tangential stress (MTS) and the generalized MTS (GMTS) criteria were used for theoretical study of interface fracture. Some experiments were also carried out to investigate the effect of cement mixing methods (hand mixing and vacuum mixing) on crack growth pattern. The results showed that the vacuum-mixed cement led to self-similar crack growth along the cement-prosthesis interface, while the crack kinked into the cement in the samples prepared by hand-mixed cement. Then some experiments were performed to verify the theoretical results obtained for mixed mode fracture angles in the samples prepared by hand-mixed cement. The sandwich Brazilian disk model was used in both finite element and experimental approaches to simulate the cement-prosthesis interface. The experimental results were found to be in good agreement with those predicted by the GMTS criterion.

3D Characterization of Mixed-Mode Fracture Toughness of Materials Using a New Loading Device

“…It is therefore necessary to develop other test methods to evaluate the interlaminar fracture parameters of materials under all in-plane loading conditions starting from pure mode-I to pure mode-II. In recent years, many researchers have been used different loading devices for evaluation of the fracture toughness of materials like Ban et al (2015), Choupani et al (2015), Nunes and Reis (2014), Silva et al (2016). A modified version of Arcan specimen has been made for the mixedmode fracture test of adhesively bonded joints, which allows pure mode-I, pure mode-II, and almost any combination of mode-I and mode-II loading to be tested using the same test specimen configuration by Arcan et al (1978) and several studies have been done using Arcan specimen like Ayatollahi and Sedighiani (2012), Cognard et al (2008), Nikbakht and Choupani (2009), Heydari et al (2011).…”

Superposition of Stress Fields in Diametrically Compressed Cylinders

“…These publications were critically examined, but did not reveal any references to the aspects emphasised here. It is also worth mentioning the contributions of Lanaro et al (2009), Andreev (1991, Markides et al (2012), Erarslan et al (2012) and Aydin and Basu (2006), Yang et al (2015), Haeri et al (2014), Choupania et al (2015), Cai et al (2015), which addressed the issue of the Brazilian test, either theoretically or experimentally, or even applied. However, none of them investigated the foundations raised from Timoshenko and Goodier (1970), in which the problem of methodological character examined in this work was found.…”