Correlation between impact strength and fracture toughness of PMMA-based bone cements.
The thrust of the work involved determining the impact strength, IS (in kJ m(-2)) [using non-ASTM-sized Charpy-type specimens and an in-house impact tester] and fracture toughness, K1c (in MPa square root(m)) [using ASTM-sized rectangular compact tension specimens] of Surgical Simplex P and three variants of Palacos R acrylic bone cements. The attractions and drawbacks of this method for determining IS are detailed. The best fit to the K1c and IS results yielded a power relationship K1c = 0.795(IS)(0.59). The usefulness and limitations of this relationship are detailed.
Lewis
G
G
Department of Mechanical Engineering, The University of Memphis, TN 38152-6576, USA. glewis@memphis.edu
Mladsi
S
S
D001696:Biomechanical Phenomena; D001843:Bone Cements; D006801:Humans; D066298:In Vitro Techniques; D007595:Joint Prosthesis; D008422:Materials Testing / Q000295:instrumentation; D019904:Polymethyl Methacrylate; D011475:Prosthesis Failure
D001843:Bone Cements; D019904:Polymethyl Methacrylate