Shortening-related thermal tomography detection method and shortening-related thermal tomography detection system for GFRP (glass fiber reinforced plastics) crack defects

Abstract

The invention discloses a shortening-related thermal tomography detection method and a shortening-related thermal tomography detection system for GFRP (glass fiber reinforced plastics) crack defects. The shortening-related thermal tomography detection system comprises a thermal infrared imager, an Ethernet cable, a computer, a USB (universal serial bus) data line, a BCN (broadband communication network) triggering signal line, a data collection card, a BNC data line, a laser device power source, a laser device power line, a laser device, an optical fiber and a collimating lens. The thermal infrared imager is connected with the computer through the Ethernet cable, the computer is connected with the data collection card through the USB data line, the data collection card is connected with the thermal infrared imager through the BNC triggering signal line and is connected with the laser device power source through the BNC data line, the laser device power source is connected with the laser device through the laser device power line, and the laser device is connected with the collimating lens through the optical fiber. The shortening-related thermal tomography detection system has the advantages that completely-damage-free, non-contact and efficient detection of the crack defects of GFRP materials can be realized, and dimensional limitation of detection materials is avoided.

Description

technical field [0001] The invention relates to a shortening correlation thermal tomography detection method and system, which are applicable to the detection and quantitative evaluation of crack defects in glass fiber reinforced plastic (GFRP) in the fields of aerospace, microelectronics, nuclear power and the like. Background technique [0002] Glass fiber-reinforced resin-based composites, which are made of glass fibers and high-performance resin matrix, are currently one of the most mature and widely used structural composite materials. GFRP has good electrical insulation and bonding properties, high mechanical strength and heat resistance, and excellent plasticity. GFRP materials have been widely used in aerospace, shipbuilding, petrochemical, automotive, wind power and military industries. However, in the process of manufacturing and using GFRP, it is easy to produce micro-crack defects, which seriously affects the performance of the material. Therefore, it is very ne...

AI Technical Summary

Problems solved by technology

However, in the process of manufacturing and using GFRP, it is easy to produce micro-crack defects, which seriously affects the performance of the material. Therefore, it is very necessary for the non-destructive detection of crack defects in GFRP materials.

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