Portable probe fixing device with adjustable coupling pressure of ultrasonic stress measurement system

Abstract

The invention provides a portable probe fixing device with adjustable coupling pressure of an ultrasonic stress measurement system. The portable probe fixing device comprises a probe clamping device; the probe clamping device is fixedly connected with the middle of a lower surface of a lower movable slide plate of a coupling pressure adjusting device; at least two springs, which are symmetrically distributed, are fixedly connected with an upper surface of the lower movable slide plate; the springs penetrate through a through hole of a middle fixed plate and are fixedly connected with the lower surface of an upper movable slide plate; a pressure sensor is mounted between at least one spring and the lower surface of the upper movable slide plate; the middle fixed plate is horizontally fixed on a box body; a force adjusting screw through hole through which a force adjusting screw penetrates is formed in the middle of the upper movable slide plate; a thread through hole for fixing the lower end of the force adjusting screw is formed in the middle fixed plate; and four corners of the box body of the coupling pressure adjusting device are fixedly connected with four supporting studs respectively, wherein high-strength suction discs are arranged the bottoms of the supporting studs. By adopting the device provided by the invention, all-position single-person independent operation can be realized and the coupling pressure is adjusted, and a residual stress measured result is relatively accurate.

Description

technical field [0001] The invention relates to a portable probe fixing device for coupling pressure of an ultrasonic stress measurement system, which belongs to the field of residual stress non-destructive testing. Background technique [0002] At present, our country is in an important period of industrial upgrading, eliminating the backward production capacity with low efficiency and high pollution in the past, and focusing on the pursuit of high-efficiency and high-tech advanced industries. With the rapid development of industries such as aerospace and high-speed trains, high-end manufacturing has gradually become the pillar of my country's industry. Most of the large structural parts need to be connected by welding technology. Due to the uneven heating of the components during the welding process, welding residual stress will be inevitable. Studies have shown that residual stress can significantly affect the service life of components. Accurate determination of residu...

AI Technical Summary

Problems solved by technology

This device overcomes the measurement error problem caused by the coupling pressure fluctuation between the probe and the workpiece easily caused by holding the ultrasonic probe with both hands in the traditional stress test process, and can realize independent operation by a single person at all positions and adjust the coupling pressure to make the residual stress measurement result more accurate

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