A novel resonant acoustic nondestructive test device

Abstract

A resonant acoustic nondestructive test device is provided. The device includes an intelligent controller capable of signal collection and data processing, a display, a workpiece movement position adjusting mechanism, a CCD image sensor, an automatic knocking hammer, a high-precision microphone, an alarm, a defective workpiece separator, a conveyor belt rotating wheel, a speed-variable motor, a conveyor belt driven wheel and a conveyor belt. A workpiece can be conveyed to the position of the CCD image sensor through driving the conveyor belt with the speed-variable motor. An image is collected by the CCD sensor, and the magnitude of knocking force is determined and is fed back to the automatic knocking hammer. The workpiece moves to the position of the automatic knocking hammer, then the knocking force is applied on the workpiece, and a resonant acoustic signal is collected by the high-precision microphone and is sent to a control center of the intelligent controller to determine whether the workpiece is defective or not. Internal and external defects of the overall structure are measured by the device, and an objective and quantitative result is obtained. Geometrical characteristics and material attributes of parts are reflected. The device is a base of a resonance detection technique.

Description

technical field [0001] The invention relates to a non-destructive testing device, in particular to a novel resonant acoustic non-destructive testing device which acquires resonant acoustic signals by tapping and analyzes and processes them. Background technique [0002] Non-destructive testing (Non-Destructive Test, NDT or NDE, Non-Destructive Examination), also known as non-destructive testing, refers to the use of materials under the premise of not damaging or affecting the performance of the tested object and the internal tissue of the tested object Changes in the reactions of heat, sound, light, electricity, and magnetism caused by internal structure abnormalities or defects, using physical or chemical methods as means, with the help of modern technology and equipment, to analyze the structure, nature, and state of the interior and surface of the test piece And the method of inspection and testing of the type, nature, quantity, shape, location, size, distribution and cha...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the current non-destructive testing technology is based on the scanning principle, which is manually operated and requires the subjective judgment of the operator. Therefore, the operator must be trained in certain techniques and / or equipped with certain Qualification to properly determine the defect of a component and its effect on the function of the component

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