Smart Structures and Systems

  • 제6권9호
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  • Pages.1041-1056
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  • 2010
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  • 1738-1584(pISSN)
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  • 1738-1991(eISSN)
테크노프레스 (Techno-Press)
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Coupling shape-memory alloy and embedded informatics toward a metallic self-healing material

  • 투고 : 2009.12.07
  • 심사 : 2010.06.03
  • 발행 : 2010.12.25
⟨ 이전 논문 다음 논문 ⟩

초록

This paper investigates the possibility of a strategy for an automatic full recover of a structural component undergoing loading-unloading (fatigue) cycles: full recover means here that no replacement is required at the end of the mission. The goal is to obtain a material capable of self healing earlier before the damage becomes irreversible. Attention is focused on metallic materials, and in particular on shape memory alloys, for which the recovering policy just relies on thermal treatments. The results of several fatigue tests are first reported to acquire a deep understanding of the physical process. Then, for cycles of constant amplitude, the self-healing objective is achieved by mounting, on the structural component of interest, a suitable microcontroller. Its input, from suitable sensors, covers the current stress and strain in the alloy. The microcontroller elaborates from the input the value of a decisional parameter and activates the thermal process when a threshold is overcome.

키워드

참고문헌

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피인용 문헌

  1. Long-time storage effects on shape memory alloy wires 2017, https://doi.org/10.1007/s00707-017-1993-2
  2. Metastable effects on martensitic transformation in SMA vol.112, pp.2, 2013, https://doi.org/10.1007/s10973-012-2585-y
  3. Synthetic bio-actuators and their applications in biomedicine vol.7, pp.3, 2010, https://doi.org/10.12989/sss.2011.7.3.185