An Experimental Study on Axial Joint Strength Made of Fe-28Mn-6Si-5Cr Shape Memory Alloy at Various Deformation Speeds

Abstract:

Fe-SMA is attempted to be applied to large structural members such as pipe joints and vibration absorbers. However, if the pipe joint is used as pipelines and curved pipes in the underground, etc., it is considered that the applications require the long endurance for several loading conditions at various deformation rates. In the past, the axial strength of the pipe joint is estimated under a quasi-static tensile test at just single strain rate. However, it is hard to find papers which estimate the axial strength of the pipe joint as well as examining its rate sensitivity. In this study, at first, the pipe joint made of Fe-SMA is prepared. It is attempted to conduct a push-out test at various deformation rates and find the joint strength when a tightening function of the joint is lost. Here, the joint strength is defined by the strength when circumferential strain on the surface of joint starts decreasing. Additionally, rate sensitivity of axial strength defined is discussed.

• Periodical: Key Engineering Materials (Volume 725)
• Pages: 99-104
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.725.99
• Online since: December 2016
• Authors: Yasuhiro Yamamoto, Kazuki Fujita, Takeshi Iwamoto*
• Keywords: Axial Joint Strength, Fe-Based Shape Memory Alloy, Push-Out Test

References

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DOI: 10.1115/imece2004-59504