FRP切欠試験片の疲労破損に及ぼす切欠深さの影響

概要

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A fatigue failure criterion based on the concept of linear notch mechanics for predicting the fatigue life of notched FRP plates is subjected to further experimental scrutiny. An experimental program is presented which examines the effect of notch depth on the fatigue failure of notched FRP plates. This is accomplished by obtaining experimental data on the notched specimens of a glass fabric/epoxy laminate for a wide range of notch geometries in pulsating tension. The process of initiation and growth of fatigue damage near the notch root was measured by means of the luminance-measuring system with a CCD camera. The experiment shows that the number of cycles required to initiate fatigue damage was governed predominantly by both the notch-root radius and the maximum elastic stress at the notch root, while it was independent of notch depth. On the basis of the fatigue failure criterion mentioned above, the experimental results can be clearly elucidated.
一般社団法人日本機械学会の論文
1994-10-25