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GB/T 38537-2020 English PDF

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GB/T 38537-2020: Ultrasonic testing method for fiber reinforced resin matrix composites - C-scan method
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PDF similar to GB/T 38537-2020


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Basic data

Standard ID GB/T 38537-2020 (GB/T38537-2020)
Description (Translated English) Ultrasonic testing method for fiber reinforced resin matrix composites - C-scan method
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard Q23
Classification of International Standard 83.120
Word Count Estimation 18,121
Date of Issue 2020-03-06
Date of Implementation 2021-02-01
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 38537-2020: Ultrasonic testing method for fiber reinforced resin matrix composites - C-scan method


---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
(C-scan method for ultrasonic detection of fiber reinforced resin matrix composites) ICS 83.120 Q23 National Standards of People's Republic of China Ultrasonic testing method of fiber reinforced resin matrix composite material C-scan method C-scanmethod Released on 2020-03-06 2021-02-01 implementation State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by the China Building Materials Federation. This standard is under the jurisdiction of the National Fiber Reinforced Plastics Standardization Technical Committee (SAC/TC39). This standard was drafted by. The 53rd Research Institute of China Ordnance Industry Group, Changzhou Tianma Group Co., Ltd., and Beijing FRP Research and Design Institute Co., Ltd., Aerospace Materials and Technology Research Institute, Matrix Technology Inspection Technology (Beijing) Co., Ltd., Shandong Ruixiang Mould Co., Ltd. Composite Materials Co., Ltd., China Aviation Development Institute of Beijing Aeronautical Materials, Beijing Representative Office of American Physical Acoustics Company, Lipaipu (Beijing) Testing Technology Co., Ltd. The main drafters of this standard. Fan Limei, Wang Congke, Dong Fangxu, Zheng Suping, Sun Liangwen, Zhang Bin, Zhu Zhongyu, Yang Jiebiao, He Shuangqi, Jiang Yunxi, Bian Yongfeng, Liu Songping. Ultrasonic testing method of fiber reinforced resin matrix composite material C-scan method

1 Scope

This standard specifies the method principle, general requirements, imaging system, test block, coupling of fiber reinforced resin matrix composite ultrasonic Mixtures, testing procedures, result evaluation, recording and reporting. This standard applies to carbon fiber and glass fiber and other fiber-reinforced resin matrix composite products (hereinafter referred to as the test piece) layering, air holes Ultrasonic C-scan detection of defects.

2 Normative references

The following documents are essential for the application of this document. For dated references, only the dated version applies to this article Pieces. For the cited documents without date, the latest version (including all amendments) applies to this document. GB/T 19799.1 Non-destructive testing Ultrasonic testing No. 1 calibration test block GB/T 27664.1 Performance and inspection of ultrasonic testing equipment for nondestructive testing Part 1. Instruments GB/T 34892 Non-destructive testing Ultrasonic testing method of manipulator

3 Method principle

The most commonly used ultrasonic C-scan methods are contact ultrasonic pulse reflection method, water immersion ultrasonic pulse reflection method and water jet ultrasonic pulse penetration law. The contact and water immersion ultrasonic pulse reflection method is based on the reflection echo or Changes in the amplitude, phase, and propagation time of the bottom echo generated by the bottom surface of the material to evaluate the quality of the material; water jet ultrasonic pulse penetration method Place the transmitting probe and the receiving probe on both sides of the test piece, and the ultrasonic wave is transmitted by one probe and passes through the test piece into the other probe. According to the change of transmitted wave intensity, the quality of the material is evaluated.

4 General requirements

4.1 Testing personnel The personnel of fiber-reinforced resin matrix composite ultrasonic C-scan inspection should have corresponding technical qualifications. 4.2 Testing environment The temperature and humidity of the work site should be within the allowable range of instruments, equipment and equipment, and there should be no influence on the normal operation of ultrasonic testing instruments Interference sources such as strong magnetism, vibration, high frequency, dust, corrosive gas and noise. 4.3 Tested items There should be no dust, impurities, dirt, pores, scratches, wrinkles, etc. on the surface of the test piece that will affect the ultrasonic test results.

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