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Tension and Flex Fatigue Behavior of Small Diameter Wires for Biomedical Applications

Benini, Brian J.

Abstract Details

2010, Master of Sciences, Case Western Reserve University, Materials Science and Engineering.
The mechanical behavior of small (e.g. 51 um to 510 um) diameter wires used in the biomedical industry has been evaluated in tension and flex bending fatigue at room temperature. 35NLT and 35NLT-DFT-41Ag composite wires exhibited yield/UTS/%RA of 1,651 MPa/2,069 MPa/76.6% and 809 MPa/1,358 MPa/68.3%,respectively. Nitinol (i.e. NiTi) compositions exhibiting different degrees of superelastic behavior exhibited a strain-rate dependent plateau stress/total recoverable strain/%RA in the range 320 MPa-450 MPa/12%/57%-67% and 480MPa/10%/53%-62% for GAC Sentalloy and 3M Unitek SE Orthoform II, respectively. Fully reversed flex bending fatigue was conducted in air over a range of cyclic strains at 1 Hz to establish both the high-cycle and low-cycle fatigue regimes. The fatigue behavior was modeled using the Coffin-Manson-Basquin approach.
John Lewandowski, PhD (Committee Chair)
Gary Michal, PhD (Committee Member)
Dave Schwam, PhD (Other)
153 p.

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Citations

  • Benini, B. J. (2010). Tension and Flex Fatigue Behavior of Small Diameter Wires for Biomedical Applications [Master's thesis, Case Western Reserve University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=case1269970809

    APA Style (7th edition)

  • Benini, Brian. Tension and Flex Fatigue Behavior of Small Diameter Wires for Biomedical Applications. 2010. Case Western Reserve University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=case1269970809.

    MLA Style (8th edition)

  • Benini, Brian. "Tension and Flex Fatigue Behavior of Small Diameter Wires for Biomedical Applications." Master's thesis, Case Western Reserve University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=case1269970809

    Chicago Manual of Style (17th edition)