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Terahertz detection method and device for low-speed impact damage of composite material test piece

A technology for low-velocity impact damage and composite materials, which is applied to measuring devices, using one-time impact force to test the strength of materials, and analyzing materials. It can solve the problems of low detection accuracy, complex detection conditions, and poor detection imaging resolution.

Active Publication Date: 2020-11-27
CIVIL AVIATION FLIGHT UNIV OF CHINA
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Problems solved by technology

[0005]The purpose of this invention is to solve the shortcomings of complex detection conditions, low detection accuracy, poor detection imaging resolution, pollution and destructiveness in traditional nondestructive testing technology. A terahertz detection method and device for low-velocity impact damage of composite material specimens are proposed

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  • Terahertz detection method and device for low-speed impact damage of composite material test piece
  • Terahertz detection method and device for low-speed impact damage of composite material test piece

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[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0029] refer to Figure 1-5 , a terahertz detection device for low-velocity impact damage to a composite material specimen, comprising a test platform base 1 and a signal processor 19, a connection plate 2 is fixedly installed on the upper end of the test platform base 1, and a horizontal plate is fixedly installed on the upper end of the connection plate 2 3. An electric slide rail 5 is fixedly installed on the side wall of the lower end of the horizontal plate 3. The electric slide rail 5 is electrically connected to the control panel in the test platform base 1, and the driving motor 7 is electrically connected to the control panel in the test platform base 1. The...

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Abstract

The invention discloses a terahertz detection method and device for low-speed impact damage of a composite material test piece. The invention relates to the field of nondestructive testing of composite material test pieces. The device comprises a test platform base and a signal processor; a connecting plate is fixedly mounted at the upper end of the test platform base; a transverse plate is fixedly mounted at the upper end of the connecting plate; an electric sliding rail is fixedly mounted on the side wall of the lower end of the transverse plate; an electric sliding block is connected into the electric sliding rail in a sliding manner; the lower end of the electric sliding block is fixedly connected with a signal transmitter; a signal receiver is fixedly mounted on the side wall of the emitter; the signal receiver is electrically connected with the signal processor through an electric wire; and the signal processor is electrically connected with the signal emitter. Through the cooperative use of the electric sliding rail, the electric sliding block, the signal emitter, the signal receiver and the signal processor, longitudinal movement of the signal emitter is achieved; and meanwhile overall detection of a composite material test piece to be detected is achieved through transverse movement of an installation box.

Description

technical field [0001] The invention relates to the field of non-destructive testing of composite material test pieces, in particular to a terahertz detection method and device thereof for low-velocity impact damage of composite material test pieces. Background technique [0002] At present, the commonly used defect detection methods for composite material specimens are mainly divided into destructive testing methods and nondestructive testing methods. The destructive testing methods mainly include: water absorption method, density method and metallographic microphotography, etc. The material test piece was destroyed and could no longer be put into service. In actual production, it is usually required to realize non-destructive testing of composite material specimens. Traditional nondestructive testing methods mainly include: visual testing, ultrasonic scanning, laser speckle interferometry, X-ray method, infrared thermal imaging, etc., but these testing methods have their ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/30G01N3/06G01N3/04
CPCG01N3/30G01N3/068G01N3/04G01N2203/001G01N2203/0641
Inventor 钟勉李军辉刘炳伟胡焱张华忠徐亚军
Owner CIVIL AVIATION FLIGHT UNIV OF CHINA
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