朱子織ガラス繊維強化プラスチックスの疲労特性

概要

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In the present paper is presented the report of the study of the fatigue properties of the satin woven glass fabric reinforced polyester. The experiment was made of fatigue test of the above mentioned materials by bending, rotating bending, torsion, tension and compression under varied test temperatures and mean applied stresses. (See Table II) Further experiment was made also of their static test of tension, bending and torsion in order to find the ratios of their fatigue value to their corresponding static value respectively. The summary of the results of this study is as follows. (1) It has been made clear that there is relation between the tension and compression fatigue strength values of the materials and the test temperature and mean applied stress. This relation is expressed in the following equation. σ_f=A_T{tanh k σ_m-tanh k(σ_m-B_T)}+σ_m where σ_f is the fatigue limit of this FRP materials. σ_m is the mean applied stress, k is the constant and A_T and B_T are the value related to the test temperature. (2) It has been made clear that the so-called Gerber's law for metals is valid also in our tension and compression fatigue test at room temperature.
社団法人日本材料学会の論文
1968-01-15