مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

video

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

sound

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Persian Version

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View:

183
مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Download:

82
مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Cites:

Information Seminar Paper

Title

CEMENT-IMPLANT INTERFACE FRACTURE FAILURE BY CRACK INITIATION DUE TO INTERFACE CAVITY STRESS CONCENTRATION

Pages

  -

Abstract

 NOWADAYS TOTAL JOINT REPLACEMENTS ARE WIDELY USED IN THE WORLD AND IMPLANT LOOSENING IS AND REMAINS AS THE MAJOR ISSUE OF ALL IMPLANT FAILURES AND THEREFORE CAUSES REVISION SURGERY PROCEDURES. STUDIES AND EXPERIMENTS HAVE IDENTIFIED POOR FIXATION OF IMPLANTS MOST LIKELY IS THE MAIN CAUSE OF LONG TERM IMPLANT FAILURE AND IN THIS CASE THE CEMENT-IMPLANT INTERFACE CAVITIES ARE VERY EFFECTIVE DUE TO RESULTANT STRESS CONCENTRATION. IN THIS STUDY THE THEORY OF THIS PROBLEM, CONTINUA AND MATHEMATICAL EQUATIONS FOR AN INHOMOGENEOUS MATERIAL BY USING ESHELBY’S EQUIVALENT INCLUSION METHOD WITH A SPHERICAL VOID AS A SPECIAL TYPE OF INHOMOGENITIES IS ADDRESSED AND A NEW YIELD CRITERION WITH RESPECT TO THE VOID’S VOLUME FRACTION IS DERIVED AND CHANGES IN MATERIAL ELASTICITY TENSOR CONCERNING MORI-TANAKA’S THEOREM ALSO DETERMINED, THEN BY USING FINITE ELEMENT METHOD AND REMESHING TECHNIQUE A MACRO SCALE CEMENT-IMPLANT INTERFACE CAVITY IS MODELED AND CONCERNING THE LOSS OF STRENGTH DUE TO VOID EXISTENCE AND THE INTERFACE STRESS CONCENTRATION, THE CRACK INITIATION AND PROPAGATION PHENOMENON IS NUMERICALLY INVESTIGATED WITH RESPECT TO DIFFERENT ORTHOPEDIC CEMENT MATERIAL PROPERTIES. THE RESULTS SHOW THAT CRACK PROPAGATES AT THE INTERFACE AT CONSTANT STRESS AND STRAIN BY ELASTOPLASTIC MATERIAL AND IT PROPAGATES IN CEMENT BULK BY CONSIDERING ELASTIC MATERIAL PROPERTIES FOR CEMENT THAT BOTH COULD CAUSE IMPLANT LOOSENING EVEN IN VERY SMALL VOID’S VOLUME FRACTIONS IN WHICH THERE ARE NO SIGNIFICANT CHANGES IN CEMENT YIELD STRESS AND ELASTICITY TENSOR ACCORDING TO ANALYTICAL SOLUTION. BUT NUMERICAL SIMULATION SHOWS THAT WHEN A HOMOGENOUS CEMENT STRUCTURE IS ACHIEVED VIA HIGH VACUUM MIXING METHOD, THERE IS A UNIFORM STRESS DISTRIBUTION IN THE CEMENT STRUCTURE AND NO STRESS CONCENTRATION ZONE FORMS EVEN AT HIGH STRESS LEVELS AND ALSO THERE IS NO APPROPRIATE LOCAL SITE FOR CRACK INITIATION.

Multimedia

  • No record.

    • Cites

  • No record.

    • References

  • No record.

    • Cite

    APA: Copy

    HAGHPANAHI, M., & GHOMASHCHI, H.. (2008). CEMENT-IMPLANT INTERFACE FRACTURE FAILURE BY CRACK INITIATION DUE TO INTERFACE CAVITY STRESS CONCENTRATION. IRANIAN CONFERENCE ON BIOMEDICAL ENGINEERING. SID. https://sid.ir/paper/906448/en

    Vancouver: Copy

    HAGHPANAHI M., GHOMASHCHI H.. CEMENT-IMPLANT INTERFACE FRACTURE FAILURE BY CRACK INITIATION DUE TO INTERFACE CAVITY STRESS CONCENTRATION. 2008. Available from: https://sid.ir/paper/906448/en

    IEEE: Copy

    M. HAGHPANAHI, and H. GHOMASHCHI, “CEMENT-IMPLANT INTERFACE FRACTURE FAILURE BY CRACK INITIATION DUE TO INTERFACE CAVITY STRESS CONCENTRATION,” presented at the IRANIAN CONFERENCE ON BIOMEDICAL ENGINEERING. 2008, [Online]. Available: https://sid.ir/paper/906448/en

    Related Journal Papers

  • No record.

    • Related Seminar Papers

  • No record.

    • Related Plans

  • No record.

    • Recommended Workshops






    Move to top
    telegram sharing button
    whatsapp sharing button
    linkedin sharing button
    twitter sharing button
    email sharing button
    email sharing button
    email sharing button
    sharethis sharing button