コーテッド平織物のクラック引裂強度特性

概要

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The crack-tear-strength properties of coated plain-weave fabrics, specimen A(PTFE-coated glass fiber fabrics) and specimen C (PVC-coated polyester fiber fabric), were investigated by uni/bi-axial tensile testing using the specimens which had the breadth of 20〜40 cm and the initial crack length of 2a=0.5〜5.0 cm at the center. The crack-tear-strength, T_p, to 2a=1 cm, where T_p was defined as the maximum tensile stress measured during the crack propagation, decreased abruptly to less than 50% of the uniaxial tensile breaking stress. T_p in the warp of specimen A with 2a=0.5〜5.0 cm on the biaxial stress condition was lower than that on the uniaxial stress condition, but it was opposite for specimen C. The coating materials did not affect the value of T_p. Further more, it was discussed that either the authors' or Racah's equation could be used as the mathematical expression of 2a- T_p curve measured.
社団法人日本材料学会の論文
1992-06-15