Handheld ultrasonic guided-wave structural damage detection device and detection method using same

Abstract

The invention discloses a handheld ultrasonic guided-wave structural damage detection device and a detection method using same. The device comprises an upper clamping body for clamping a to-be-detected workpiece and a lower clamping body corresponding to the upper clamping body, wherein each of clamping parts of the upper clamping body and the lower clamping body comprises an upper clamping part body and a lower clamping part body which adopt symmetrical and semi-circular structures, and flexible piezoelectric patches are symmetrically attached to inner wall surfaces of the upper clamping part body and the lower clamping part body respectively; the device further comprises a coupling agent addition device and a locking mechanism, the coupling agent addition device is used for filling the space between the flexible piezoelectric patches and the to-be-detected workpiece with a coupling agent, and the locking mechanism is used for locking the upper clamping part bodies and the lower clamping part bodies. With the adoption of the device, the problem of low detection efficiency caused by the fact that PZT piezoelectric ceramic is required to be bonded by the aid of a two-component adhesive when a lot of existing cylindrical objects such as metal stranded wires and the like are detected with a stress wave detection method at present is solved, so that to-be-detected cylindrical pieces such as the metal stranded wires, plastic pipelines, round bars and the like can be detected quickly, and the detection efficiency can be substantially improved.

Description

technical field [0001] The invention relates to a rapid detection device for metal stranded wire damage and plastic pipes, in particular to a hand-held ultrasonic guided wave structure damage detection device and a detection method thereof. Background technique [0002] As an effective load-bearing component, metal stranded wires are more and more widely used in large-scale environments such as bridges, ports, railways, and buildings. The structural health monitoring of stranded wires has become a research hotspot at home and abroad. The complexity of measurement objects and extreme measurement conditions can easily lead to many new measurement problems. On the one hand, due to the improvement of the manufacturing level of the metal stranded wire structure, the introduction of new materials, and the new changes in the structure, its application range has been greatly broadened, and at the same time, the damage shape has also shown diversity and complexity. Technology puts f...

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Problems solved by technology

However, the energy transfer efficiency of piezoelectric ceramic transducers used in stress wave detec

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