Defect detection method and system applied to OSR adhesive layers on surface of spacecraft

Abstract

The invention discloses a defect detection system applied to OSR adhesive layers on the surface of a spacecraft. The system comprises a vacuum pump assembly, pressurizing bag film, a sealing rubber strip, an industrial camera and a cloth map, wherein the vacuum pump assembly comprises a vacuum pump, an air suction pipeline and a vacuum valve, and the vacuum degree of the vacuum pump assembly is not lower than 0.092MPa during working; and the pressurizing bag film is a film with a thickness of 40-80 microns, and the film has good translucency and is prepared from polyvinyl chloride, polyethylene, polypropylene or other resin. According to the detection system and method, OSRs at defected parts of adhesive layers sink in a vacuum pressure lamination process, elastic pieces are elastically bent through the pressure lamination on the OSRs, the surface state heights are inconsistent, and the sizes, shapes and the positions of the defected regions are reflected, so that the influences causedto the product quality can be judged, the defect detection of the adhesive layers can be rapidly and efficiently realized, the time and the labor can be substantially saved, the cost is low, and thereliability is high.

Description

technical field [0001] The invention relates to a pressure-type defect detection system and detection method, in particular to a method and system for detecting defects of an OSR adhesive layer applied to the surface of a spacecraft, and belongs to the technical field of aerospace product detection. Background technique [0002] OSR is one of the most ideal thermal control materials for long-lived satellites to adjust the temperature of the spacecraft surface through its own thermal radiation performance, namely solar absorption ratio (αs) and hemispherical emissivity (εh). The OSR structure is generally coated with an ITO layer and a metal silver film on both sides of a thin glass substrate (size 40mm*40mm, thickness <0.2mm). When in use, paste it directly on the outer heat dissipation surface of the satellite with conductive glue. In the production process, there are often "voids" in the OSR adhesive, which affects the adhesive strength of the OSR on the one hand, and ...

AI Technical Summary

Problems solved by technology

At present, we use specific cotton swabs for piece-by-piece inspection, which is inefficient and wastes time and manpower

Different operators and the pressure of each pressing are different, resulting in different defect detection standards

At the same time, OSR has a strong reflective effect, and long-term detection of light will sting the eyes and cause harm to the human body

Although equipment such as X-ray diffraction and high-precision infrared thermal imaging cameras can detect these defects, they are expensive and cannot be used in online systems

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