Nondestructive testing accurate knocking device and method thereof

A non-destructive testing and accurate technology, applied in measurement devices, analysis of solids using sonic/ultrasonic/infrasonic waves, generation of ultrasonic/sonic/infrasonic waves, etc., can solve the problem that affects the evaluation results of internal defects of the tested wood, and the non-destructive testing technology is difficult to truly reflect wood etc.
CN113671029APending Publication Date: 2021-11-19SHANGHAI CONSTRUCTION GROUP
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANGHAI CONSTRUCTION GROUP
Publication Date
2021-11-19

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Abstract

The invention discloses a nondestructive testing accurate knocking device and a method thereof, and relates to the technical field of nondestructive testing. The problem that the evaluation result of internal defects of detected wood is affected due to the fact that the existing nondestructive testing technology is difficult to reflect the internal structure of the wood truly is solved. The nondestructive testing accurate knocking device comprises a cylindrical frame with one open end and the other closed end, a spring, a pull rod and a hammer head arranged in an inner cavity of the cylindrical frame, one end of the pull rod is hinged to the hammer head, the other end of the pull rod penetrates through an end plate of the cylindrical frame and extends out of a cylindrical, the pull rod is sleeved with the spring, and the two ends of the spring abut against the hammer head and the end plate respectively; the method comprises the steps that after the hammer head is aligned with a detected object, the pull rod is pulled to a certain scale or mark to determine the knocking force, the pull rod is loosened, and the hammer head is instantly accelerated under the action of the elastic force of the spring and automatically knocks the knocking point of the stress wave sensor on the detected object.
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Description

technical field

[0001] The invention relates to the technical field of non-destructive testing, in particular to a non-destructive testing precision tapping device and method. Background technique

[0002] At present, the non-destructive testing technology based on the principle of stress wave is more and more widely used in wooden structure testing. Wooden structure testing can be divided into material performance testing, material defect testing, dimensional deviation and deformation testing, joint quality and structural performance testing, etc. , Non-destructive testing technology has the advantages of safety, simple operation, easy to carry, and suitable for on-site operations.

[0003] During detection, the operator holds a small hammer and taps the contact of the stress wave sensor suspended on the wood to be detected, thereby stimulating the propagation of the stress wave. The stress wave sensor picks up the signal, and according to the wave theory, the propagation s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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