Magnetostriction guided wave detector

Abstract

The invention discloses a magnetostriction guided wave detector. The invention comprises a host computer data process system, an embedded control system and a probe part. A signal control and processing module of the embedded control system is connected with a processing module and the host computer data process system; a coil adapter in the probe part is connected with a power amplification module and a preposition amplification module in the embedded control system; magnetostriction band in the probe part is pasted on a detecting tube by epoxy resin or directly coupled on the detecting tube by a machinery mode and carries out magnetization; and a coil is covered outside the magnetostriction band and connected with the coil adapter and the power amplification module. Compared with a traditional detection technology, the detector of the invention uses time frequency filtering technology to analyze detected waveform, so as to increase signal to noise ratio and make a defect signal easier to be identified. The invention can detect pipeline member in media such as soil, cement and ground, or overhead wire rope suspension rod suspension rod and wire rope and locate position and size of the defect.

Description

technical field [0001] The invention relates to a non-destructive detector, in particular to a magnetostrictive guided wave detector for detecting pipelines buried in a medium or overhead steel cable suspenders and steel cables. Background technique [0002] Pipelines play an extremely important role in economic construction and national defense industry, and have become the lifeblood of the national economy. Pipelines have high transportation efficiency and large transportation capacity, and are easy to realize automatic management; one investment in construction can be used for a long time, and the investment saves less land and transportation loss Low, and not affected by topography, landforms and climatic conditions. However, industrial pipelines generally work under very harsh conditions. Due to factors such as inevitable corrosion, natural effects, and man-made damage, pipeline wall thickness thinning and leakage accidents occur frequently, which not only cause huge lo...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the above-mentioned deficiencies in the background technology, the object of the present invention is to provide a magnetostrictive guided wave detector, which detects the magnetostrictive guided wave by using a single probe, time-frequency filtering, and waveform recognition technology, and detects the pipeline, metal All-round detection of various defects of components, so as to quickly and accurately detect defects such as internal cracks and corrosion of pipes and metal components

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