Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics
Online ISSN : 2424-2837
セッションID: OS01W0244
会議情報
OS01W0244 Measurement of crack opening displacement and energy release rate of rapidly bifurcating cracks by high-speed holographic microscopy
Shinichi SuzukiKenichi Sakaue
著者情報
会議録・要旨集 フリー

詳細
抄録
High-speed holographic microscopy is applied to take three successive photographs of fast propagating cracks at the moment of bifurcation. The cracks are propagated in PMMA plate specimens at a speed about 660m/s. From the photographs, crack opening displacement (COD) is measured along the cracks as a function of distance r from the crack tips. The measurement results show that the CODs are proportional to √<r> before bifurcation. After bifurcation, the CODs of mother cracks are proportional to √<r>, however, those of branch cracks are not always proportional to √<r>. The energy release rate and energy flux toward crack tips are obtained from the COD data, and are found to be continuous across the bifurcation point.
著者関連情報
© 2003 一般社団法人 日本機械学会
前の記事 次の記事
feedback
Top