ぜい性材料の繰返し荷重によるひずみの精密測定
1993 年 59 巻 7 号 p. 1085-1090
詳細
1993 年 59 巻 7 号 p. 1085-1090
Generally it is said that fatigue by repeat loading does not occur in amorphous glass except static fatigue. In this paper, offering suggestion for measurement of limiting infinitesimal displacement applying Newton's rings as marking point, it is tried to accomodate measuring displacement (fatigue) value at center of specimen by testing method of three points bending repetitional fatigue. As a result, deflection of about 200μm value occurred by fatigue was obtained for the specimen of 400mm in length. Further, in consequence of preliminary experiment, the measurement accuracy by this whole device was about ±0.016μm.
