MOUNTING TYPE APPARATUS FOR MEASURING TENSILE FORCE OF STEEL WIRES USING ULTRASONIC GUIDED WAVES

摘要

Provided in the present invention is a device for measuring tension of a steel strand by using an ultrasonic guided wave, which comprises: a sensor module unit which is mounted on an object composed of a steel strand in order to oscillate an ultrasonic guided wave having dispersion to the object, and measures a tensile force applied to the object by receiving the ultrasonic guided wave delivered through the object; a signal processing unit which measures a signal of the ultrasonic guided wave received from the object through the sensor module unit, and converts the measured signal into the spectrum of a frequency domain; and a spectrum diagnosis unit which analyzes the spectrum of the frequency domain which is converted in the signal processing unit in order to calculate the tensile force of the object. Here, the sensor module unit comprises: a sensor unit formed to be mounted on an outer circumferential surface of the object; and a magnet unit which applies a magnetic force to the sensor unit corresponding to a current applied by using an electromagnet. Therefore, a magnetostriction (MS) principle of the object is used. Resultantly, according to the present invention, because the tensile force is measured by using a distribution feature of the ultrasonic guided wave, a cable or a tendon to be measured can be diagnosed and monitored in a non-destructive method. In addition, a method of detachably mounting an exposed steel strand can be selected, thereby easily measuring the tensile force with respect to a steel strand structure which is installed in advance.