Recent Advances in Self-healing Metal Matrix Composites

Bellah, Masum; Nosonovsky, Michael; Rohatgi, Pradeep K.

doi:10.1007/978-3-030-92567-3_18

Cited by 6 publications

(2 citation statements)

References 27 publications

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“…When heat is applied to fractured SMA-reinforced SHMMCs, the stretched SMA undergoes phase transformation and returns to its original shape. Compressive healing force exerted by the SMA and predetermined matrix liquefaction at healing temperature help heal cracked SMA-reinforced SHMMCs [37][38][39].…”

Section: Introductionmentioning

confidence: 99%

“…This paper will review an analytical model that determines the minimum volume fraction of SMA fibers required to induce a clamping force at the crack interface during a healing cycle. Various challenges such as improving wetting between the reinforcement and matrix, overcoming oxidation, providing sufficient capillary pressure, and achieving healing of macroscopic damage without compromising strength or functionality are encountered in the development of SMA-reinforced SHMMCs [37,[63][64][65]. Major challenges, knowledge gaps, and future research directions, including the need for autonomous and multicycle healing capability to develop SMA-reinforced SHMMCs, will be outlined in this paper.…”

Section: Introductionmentioning

confidence: 99%

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Shape Memory Alloy Reinforced Self-Healing Metal Matrix Composites

2023

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This paper reviews the synthesis, characterization, healing assessment, and mechanics of NiTi and other shape memory alloy (SMA)-reinforced self-healing metal matrix composites (SHMMCs). Challenges to synthesizing and characterizing the SMA-reinforced SHMMCs and the strategies followed to overcome those challenges are discussed. To design the SMA-reinforced SHMMCs, it is necessary to understand their microstructural evolution during melting and solidification. This requires the knowledge of the thermodynamics of phase diagrams and nonequilibrium solidification, which are presented in this paper for a model self-healing composite system. Healing assessment provides information about the autonomous and multicycle healing capability of synthesized SHMMCs, which ultimately determines their success. Different techniques to assess the degree of healing of SHMMCs are discussed in this paper. Strategies are explored to find the optimum volume fraction of SMA wires needed to yield the matrix and prevent damage to the SMA wires for the most effective healing. Finally, major challenges, knowledge gaps, and future research directions, including the need for autonomous and multicycle healing capability in SMA-reinforced SHMMCs, are outlined.

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Section: Introductionmentioning

confidence: 99%