STP1008

    Calculation and Experimental Analysis of Forces and Stresses in Intramedullary Nail Models

    Published: Jan 1989


      Format Pages Price  
    PDF (476K) 10 $25   ADD TO CART
    Complete Source PDF (5.5M) 10 $55   ADD TO CART


    Abstract

    One open cylindrical tube made from shape memory alloy of 55% nickel and 45% titanium (NiTi) was tested. The activated total radial force was measured between rigid plates, when the tube was heated by hot water. Three NiTi tubes of 10-mm length were inserted into biomechanical equivalent aluminum tubes and heated in order to measure the deformation of the model tubes. Photoelastic tests were performed on three NiTi tube specimens, 2.5 mm in length, which had been inserted into biomechanical equivalent Araldite disks of 10-mm thickness. All tests were evaluated by combining the results with calculations on slender circular rings and were transmitted to natural bone tubes. The results show activated stresses between 15 and 30 N/mm2 in real bone and therefore no dangerous stress states.

    Keywords:

    osteosynthesis, biomechanics, design, intramedullary nails, shape memory alloys


    Author Information:

    Baumgart, F
    Professor of mechanics, Ruhr University, Bochum,

    Becker, HJ
    Metallurgical engineer, Krupp Forschungsinstitut, Essen,


    Paper ID: STP10362S

    Committee/Subcommittee: F04.15

    DOI: 10.1520/STP10362S


    CrossRef ASTM International is a member of CrossRef.