CONDUCTOR STRAIN EVALUATION METHOD AND DEVICE, AND CABLE LIFE PREDICTION METHOD

• Main Authors: FUKASAKU IZUMI, KATO AYANO
• Format: Patent
• Language: English; Japanese
• Published: 26.06.2023
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

To provide a conductor strain evaluation method and device capable of predicting the life in a short time, and also to provide a cable life prediction method.SOLUTION: Disclosed is a method for evaluating the strain applied to a conductor 11a when the bending and/or twisting operation is applied to a cable 10 having the conductor 11a composed of a twisted wire conductor in which a plurality of strands are twisted together. This method includes the steps of: measuring a resistance value of the conductor 11a which changes in time series when the operation is periodically applied to the cable 10; and evaluating the strain based on the fluctuation range of the measured resistance value of the conductor 11a which changes in time series.SELECTED DRAWING: Figure 5 【課題】短時間で寿命の予測が可能な導体ひずみ評価方法及び装置、ケーブル寿命予測方法を提供する。【解決手段】複数の素線を撚り合わせた撚線導体からなる導体１１ａを有するケーブル１０に屈曲又は／及び捻回の動作を加えた際に導体１１ａに付与されるひずみを評価する方法であって、ケーブル１０に動作を周期的に加えた際に時系列的に変化する導体１１ａの抵抗値を測定し、測定した時系列的に変化する導体１１ａの抵抗値の変動幅を基に、ひずみを評価する。【選択図】図５