Detection method for fiber reinforced plastic pressure container based on acoustic emission testing technique
A fiber reinforced plastic and acoustic emission detection technology, which is applied in the direction of material analysis, instruments, and materials analysis using acoustic emission technology, which can solve the problems of material defects, poor detection effect, and scrapped structural parts.
Inactive Publication Date: 2017-05-31
SHANGHAI INST OF SPECIAL EQUIP INSPECTION & TECHN RES
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Problems solved by technology
[0003] The advanced nature of fiber-reinforced plastics coexists with its discrete quality and high cost. In practical applications, even if a reasonable processing technology is established after research and testing, material defects may still occur in the manufacturing process of composite structural parts, causing Quality problems may even lead to the scrapping of the entire structural part and cause major economic losses
[0004] Among conventional non-destructive testing methods, radiographic testing is less effective in detecting cracks with strong directionality, and at the same time there is a risk of radiation. Ultrasonic testing is less effective in detecting defects such as inclusions and fiber breaks.
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[0020] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.
[0021] Embodiments of the present invention relate to a fiber reinforced plastic pressure vessel detection method based on acoustic emission detection technology, such as figure 1 shown, including the following steps:
[0022] (1) Calibrate the detection probe. Specifically: the detection probe is placed on the fiber reinforced plastic pressure vessel, and the simulated source acoustic emission amplitude value response test i...
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The invention relates to a detection method for a fiber reinforced plastic pressure container based on an acoustic emission testing technique. The method comprises the following steps: calibrating a detection probe; placing the detection probe onto the fiber reinforced plastic pressure container; performing material attenuation test on the fiber reinforced plastic pressure container; measuring the sound velocity in the material of the fiber reinforced plastic pressure container; pressurizing the fiber reinforced plastic pressure container and completing the pressurizing test. The detection method provided by the invention can be used for effectively detecting the defects of the fiber reinforced plastic pressure container.
Description
technical field [0001] The invention relates to the technical field of fiber-reinforced plastic pressure vessel detection, in particular to a fiber-reinforced plastic pressure vessel detection method based on acoustic emission detection technology. Background technique [0002] Glass fiber reinforced plastic is also known as FRP, commonly known as FRP (Fiber Reinforced Plastics), that is, fiber reinforced plastic. FRP is a composite material, that is, a material with new properties composed of two or more materials with different properties through physical or chemical methods. Various materials learn from each other in terms of performance and produce synergistic effects, so that the overall performance of FRP is better than that of the original constituent materials to meet various requirements. Among FRP, fiber reinforced materials are the most widely used and used in the largest amount, and are characterized by small specific gravity, large specific strength and specifi...
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IPC IPC(8): G01N29/14
CPCG01N29/14G01N2291/011G01N2291/015G01N2291/023G01N2291/2695
Inventor 杨宇清李秋锋蔚道祥李昕罗晓明
Owner SHANGHAI INST OF SPECIAL EQUIP INSPECTION & TECHN RES