Dynamic optical visualization on the interaction between propagating crack and stationary crack

X. F. Yao, W. Xu, K. Arakawa, K. Takahashi, T. Mada

    研究成果: ジャーナルへの寄稿学術誌査読

    32 被引用数 (Scopus)

    抄録

    Dynamic interactions between the propagating crack and the static crack in PMMA material are studied by combining high-speed Schardin camera with optical caustic method. A series of dynamic optical bifocal patterns (the specimen-focused image and the off-focused image) around the propagating crack tip and the static crack tip are recorded for PMMA thin strip which contains two collinear-edge-cracks subjected to tensile loading, the variations of the caustic diameter and the distortion of the caustic shape are revealed due to the influence of local stress singularity at the crack tip. Interactions between the moving crack and the static crack are analyzed by means of the evolution of dynamic fracture parameters. The influence of crack interaction on fracture parameters is discussed based on both a K-dominance assumption and a higher order transient crack-tip expansion. These results will be useful to the evaluation of dynamic properties and the design of structures in the cracked polymer material.

    本文言語英語
    ページ(範囲)195-207
    ページ数13
    ジャーナルOptics and Lasers in Engineering
    43
    2
    DOI
    出版ステータス出版済み - 2月 2005

    !!!All Science Journal Classification (ASJC) codes

    • 電子材料、光学材料、および磁性材料
    • 原子分子物理学および光学
    • 機械工学
    • 電子工学および電気工学

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