GB/T 36228-2018 English PDF

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GB/T 36228-2018: Non-destructive testing -- Guide for planar flaw height sizing by ultrasonic testing
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 36228-2018	559	Add to Cart	5 days	Non-destructive testing -- Guide for planar flaw height sizing by ultrasonic testing	Valid

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Basic data

Standard ID: GB/T 36228-2018 (GB/T36228-2018)
Description (Translated English): Non-destructive testing -- Guide for planar flaw height sizing by ultrasonic testing
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J04
Classification of International Standard: 19.100
Word Count Estimation: 28,237
Date of Issue: 2018-05-14
Date of Implementation: 2018-12-01
Regulation (derived from): National Standards Announcement No. 6 of 2018
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 36228-2018: Non-destructive testing -- Guide for planar flaw height sizing by ultrasonic testing

---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.
(Non-destructive testing Ultrasound quantitative guideline for planar lesion height) ICS 19.100 J04 National Standards of People's Republic of China Non-destructive testing plane-type injury height ultrasound quantitative guidance Published on.2018-05-14 2018-12-01 implementation State market supervision and administration China National Standardization Administration issued

Content

Foreword III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Method Summary 2 5 30-70 Method 2 6 endpoint diffraction method 8 7 twin crystal double mode 14 8 twin crystal isomorphism 19 Appendix A (informative) Limitations of the method 23 Appendix B (informative) Damage Assessment Process 24

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed and managed by the National Non-Destructive Testing Standardization Technical Committee (SAC/TC56). This standard was drafted. National Nuclear Power Plant Operation Service Technology Co., Ltd., Dongfang Electric (Guangzhou) Heavy Machinery Co., Ltd., Shanghai Electric Nuclear Power Equipment Co., Ltd., Harbin Electric Group (Qinhuangdao) Heavy Equipment Co., Ltd. The main drafters of this standard. Wang Minghui, Che Tianze, Wang Jun, Tang Guoxiang, Deng Li, Deng Daoyong, Ji Longhua, Zhang Jianlei. Non-destructive testing plane-type injury height ultrasound quantitative guidance

1 Scope

This standard specifies the ultrasonic testing technology and its principle for determining the height of the flat surface of the ferrite and austenite workpieces. this The standard recommends the use of time-of-flight (TOF) or propagation time difference (ΔTOF) for ultrasonic height quantification. The flat-type injury height quantitative techniques described in this standard have their best application range. See Appendix A for details. This standard recommends the determination of the height of the flat injury according to the evaluation procedure in Appendix B. This standard does not apply to the method of quantifying the size of the injury using the signal amplitude method, and does not involve the method of quantification of the length of the flat injury. Acceptance criteria for type injuries.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 12604.1 Non-destructive testing terminology ultrasonic testing GB/T 20737 General Terms and Definitions for Nondestructive Testing

3 Terms and definitions

The following terms and definitions as defined in GB/T 12604.1 and GB/T 20737 apply to this document. 3.1 Dual mode bi-modal method An ultrasonic detecting method for quantitatively determining the height of a wound by using both longitudinal and transverse waves existing in a workpiece. 3.2 Corner reflection The ultrasonic beam is obliquely propagated to the 90° interface formed by the surface of the wound and the workpiece to be inspected, due to the interaction of the acoustic wave and the interface. The raw ultrasound energy is reflected. 3.3 Double peak doublet Simultaneously appear in pairs on the screen, and two signals that move synchronously as the probe approaches and moves away from the injury. Note. When the height of the injury is quantified by the endpoint diffraction method, the end point signal and the lower end point signal (or the end angle reflection signal) are double peaks. 3.4 Far surface far-surface At the time of inspection, the other surface of the workpiece to be inspected is opposite to the probe contact surface. Note. For example, when the pipe is inspected from the outer surface, the inner surface of the pipe is the far surface. 3.5 Near surface near-surface The surface of the workpiece to be in contact with the probe during inspection. Note. For example, when the pipe is inspected from the outer surface, the outer surface of the pipe is the near surface. ......

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