Investigation of cyclic creep of surgical cements

• Autorzy: Balin A. , Junak G.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The paper suggests to adapt the research method of low cycle fatigue for modelling the loads and deformation on surgical cements in an artificial hip joint. Surgical cements have also been modified in order to improve their functional properties. Design/methodology/approach: Low cycle fatigue tests were conducted on samples made from Palamed cement without an addition and on samples made from cement modified with glassy carbon and titanium. The tests were conducted on a servohydraulic fatigue testing machine, MTS-810, with load control. Findings: Fatigue tests proved viscoelastic character of all the tested materials. During the fatigue tests the phenomenon of cyclic creep was observed. Research limitations/implications: Modelling the loadings and deformations of cement in endoprostheses of joints with the low cycle fatigue method takes into account its all high value, while cement is being used for endoprostheses for many years in the conditions of random stress and deformation courses. Therefore the obtained deformation values are bigger than those which would have been obtained in real conditions in the same time. Practical implications: The low cycle fatigue tests carried out showed how important is the factor of time for the behavior of surgical cement in the conditions of changeable loadings. This fact is essential to assess its usability for endoprosthesoplasty of joints. The stem subsidence and remodeling of bone occurred in the course of the cement deformation. For the clinical practice the estimation of the deformation value of the cement and stem subsidence during the exploitation of the artificial hip joint is the important problem. Originality/value: The rheological phenomena in surgical cements, which is viscoelasticity material, occurred at low cycle fatigue tests. The deformation increase in the conditions of the cement creep is the fundamental phenomena.

Słowa kluczowe

EN

fatigue; biomaterials; mechanical properties; modelling

PL

zmęczenie materiału; biomateriały; właściwości mechaniczne; modelowanie

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2007
• Tom: Vol. 28, nr 5
• Strony: 281--284
• Opis fizyczny: Bibliogr. 32 poz., wykr.

Twórcy

autor

Balin A.

autor

Junak G.

• Department of Materials Mechanics, Silesian University of Technology, ul. Krasińskiego 8, 40-019 Katowice, Poland,

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