A major constraint in improving the understanding<br/>of the micromechanics of the fatigue failure process<br/>and, hence, in optimizing bone cement performance is<br/>found in the uncertainties associated with monitoring the<br/>evolution of the internal defects that are believed to dominate in vivo failure. <br/><br/>The present study aimed to synthesize high resolution imaging with complementary damage monitoring/detection techniques. <br/><br/>As a result, evidence of the chronology of failure has been obtained. The earliest stages of crack initiation have been captured and it is proposed that, in the presence of a pore, crack initiation may occur away from the pore due to the combined influence of pore morphology and the presence of defects within regions of stress concentration. <br/><br/>Furthermore, experimental evidence shows that large agglomerations of BaSO4 are subject to microcracking during fatigue, although in the majority of cases, these are not the primary cause of failure.<br/><br/>It is proposed that cracks may then remain contained<br/>within the agglomerations because of the clamping effect<br/>of the matrix during volumetric shrinkage upon curing
To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.