Steel tube nondestructive testing system using magnetostriction torsion ultrasonic guided waves

Abstract

The invention discloses a steel tube nondestructive testing system using magnetostriction torsion ultrasonic guided waves. A magnetostriction strip, a magnetostriction torsion ultrasonic guided wave probe and a high pressure air bag are sequentially installed on a tested steel tube, one end of a probe cable is connected with a magnetostriction torsion ultrasonic guided wave probe, the other end of the probe cable is respectively connected with a pulse amplification module and a signal conditioning module, the singal conditioning module is sequentially connected with a signal processing module and an embedded display module, and an embedded control module is connected with a control pulse amplification module. When signals of the pulse amplification module pass though the magnetostriction torsion ultrasonic guided wave probe, torsion ultrasonic guided waves are generated in the tested steel tube to be transmitted in the steel tube; and when the torsion ultrasonic guided waves encounter defects of the steel tube, the reflected ultrasonic guided waves are received by the probe and subjected to signal processing by the singal conditioning module and the signal processing module, and the defects of the steel tube is displayed on the embedded display module. By means of the steel tube nondestructive testing system using the magnetostriction torsion ultrasonic guided waves, nondestructive testing of corrosion, end surfaces and length of steel tube stand columns are achieved, the testing efficiencies are high, and the system is convenient and reliable.

Description

technical field [0001] The invention relates to a steel pipe non-destructive testing system, in particular to a steel tube non-destructive testing system using magnetostrictive torsional ultrasonic guided waves. Background technique [0002] Steel pipes are widely used in many fields such as industry and transportation. In many applications, the service status of steel pipe columns and whether there is corrosion or damage have a great impact on the property and life of enterprises and people. Some steel pipe columns with severe corrosion are difficult to guarantee normal work in dangerous situations. [0003] For example, the guardrail used on the highway, even if the guardrail is not corroded and damaged, if the depth of the guardrail buried in the ground is not enough, the normal operation of the guardrail cannot be guaranteed; if the guardrail has some cracks and corrosion due to long-term outdoor service, it cannot be guaranteed. The normal functioning of the guardrail....

AI Technical Summary

Problems solved by technology

Patent No. 200710053532.1 discloses a device for detecting magnetically conductive construction defects based on magnetostrictive torsional waves, in which permanent magnets and coils are used to excite torsional waves, the structure is large and inconvenient to use, and different probes are used for excitation and reception

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