INVESTIGATION OF FRACTURE IN AN INTERFACE CRACK BETWEEN BONE CEMENT AND STAINLESS STEEL
AbstractINTERFACE 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.
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License [CC BY] that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).