INSPECTION METHOD

• Main Authors: FUKASAKU IZUMI, KATO AYANO
• Format: Patent
• Language: English; Japanese
• Published: 18.07.2024
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

To provide an inspection method capable of detecting with high sensitivity the occurrence of disconnection in a conductor.SOLUTION: In a method for inspecting disconnection of a conductor 11a of a cable 10, vibration operation for displacement in a direction vertical to a longitudinal direction of the cable 10 is performed on an arbitrary detection portion in the longitudinal direction of the cable 10 by using a portable vibration operation mechanism 2, so that a resistance value of the conductor 11a, which changes on a time series basis, is measured. A resistance value variation component at a vibration frequency corresponding to an operation period of the vibration operation is extracted by performing frequency analysis on the measured resistance value so that the disconnection of the conductor 11a at the detection portion is detected on the basis of the magnitude of the extracted resistance value variation component.SELECTED DRAWING: Figure 1 【課題】導体に断線が発生したこと等を高感度で検知可能な検査方法を提供する。【解決手段】ケーブル１０の導体１１ａの断線を検査する方法であって、携帯可能な加振動作機構２を用いて、前記ケーブル１０の長手方向における任意の検査部位に対してケーブル１０の長手方向に垂直な方向に変位する加振動作を行うことで、時系列的に変化する導体１１ａの抵抗値を測定し、該測定した前記抵抗値を周波数解析することで、加振動作の動作周期に相当する加振周波数での抵抗値変動成分を抽出し、該抽出した前記抵抗値変動成分の大きさに基づいて、検査部位における導体１１ａの断線を検知する。【選択図】図１