Dynamic crack propagation and unloading behavior of brittle polymers

K. Arakawa, D. Nagoh, K. Takahashi

研究成果: Contribution to journalArticle査読

21 被引用数 (Scopus)


The method of caustics in combination with a Cranz-Schardin high-speed camera was utilized to study dynamic crack propagation and unloading behavior of epoxy, PMMA and Homalite-100 specimens. Dynamic stress intensity factor KID and crack velocity ȧ were evaluated in the course of crack propagation. Caustic patterns at the loading points were also recorded to estimate load P applied to the specimen. Unloading rate Ṗ, the time derivative of P, was determined as a function of time t, and its time correlation with KID or ȧ was examined. The findings showed that the change in Ṗ was qualitatively in accord with the change in KID or ȧ. However, there existed slight differences among the values of t giving the maximum Ṗ, ȧ and KID, so that their order was ȧ, Ṗ and KID.

ジャーナルInternational Journal of Fracture
出版ステータス出版済み - 12 1 1999

All Science Journal Classification (ASJC) codes

  • 計算力学
  • モデリングとシミュレーション
  • 材料力学


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