| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for measuring electrical resistance, which eliminates the effects of a contact resistance generated between a contact element and a conductive fiber, when the electrical resistance of the conductive fiber of a carbon fiber, a metal fiber or the like of a single fiber, a fiber bundle or a fiber sheet is measured nondestructively and continuously, and provide an apparatus for measuring electrical resistance of a conductive fiber, which has high measurement accuracy and is made compact. SOLUTION: According to this method for nondestructively and continuously measuring the electrical resistance in a longitudinal direction of the conductive fiber (1), the fiber (1) is sequentially sent in contact with a first to a fourth energizing means (10, 20, 30 and 40) arranged in series via a prescribe interval, whereby a current is supplied to the fiber (1) via the first and fourth energization means (10, 20, 30 and 40). A current I supplied to the fiber (1) is measured. At the same time, a voltage drop E, produced in the fiber (1) via the second and third energization means (20 and 30) disposed between the first and foruth energization means (10 and 40), is measured. An electrical resistance value R1b or the fiber 1 between the second and third energizing means (20 and 30) is obtained from the ratio of a voltage value, corresponding to the voltage drop and the current value.
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