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GB/T 41115-2021 English PDF

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GB/T 41115-2021: Non-destructive testing of welds - Ultrasonic testing - Use of time-of-flight diffraction technique (TOFD)
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GB/T 41115-2021English774 Add to Cart 6 days [Need to translate] Non-destructive testing of welds - Ultrasonic testing - Use of time-of-flight diffraction technique (TOFD) Valid GB/T 41115-2021

PDF similar to GB/T 41115-2021


Standard similar to GB/T 41115-2021

GB/T 41110   GB/T 40801   GB/T 41112   GB/T 41107.2   GB/T 41107.1   

Basic data

Standard ID GB/T 41115-2021 (GB/T41115-2021)
Description (Translated English) Non-destructive testing of welds - Ultrasonic testing - Use of time-of-flight diffraction technique (TOFD)
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard J33
Word Count Estimation 41,471
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 41115-2021: Non-destructive testing of welds - Ultrasonic testing - Use of time-of-flight diffraction technique (TOFD)


---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 of welds -- Ultrasonic testing -- Use of time-of-flight diffraction technique (TOFD) ICS 25:160:40 CCSJ33 National Standards of People's Republic of China Nondestructive testing of welds Ultrasonic testing Application of Time-of-Flight Diffraction (TOFD) (ISO 10863:2020, IDT) Published on 2021-12-31 2022-07-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration directory Preface I 1 Scope 1 2 Normative references 1 3 Terms and Definitions 2 4 TOFD Technical Capability Overview 2 5 Detection level 3 6 Information required before testing 3 7 Requirements for testing personnel and testing equipment 4 8 Test preparation 5 9 Base metal inspection 6 10 Range and sensitivity settings7 11 Weld inspection8 12 Interpretation and analysis of TOFD images9 13 Test report 15 Appendix A (Informative) Reference Test Block 17 Appendix B (Informative) Typical TOFD Image 22 Reference 38

foreword

This document is in accordance with the provisions of GB/T 1:1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" drafted: This document uses the translation method equivalent to ISO 10863:2020 "Non-destructive testing of welds, ultrasonic testing, time-of-flight diffraction (TOFD)" Applications" The Chinese documents that have a consistent correspondence with the international documents normatively cited in this document are as follows: ---GB/T 9445-2015 Non-destructive testing personnel qualification and certification (ISO 9712:2012, IDT) ---GB/T 11345-2013 Ultrasonic testing technology, testing level and evaluation for non-destructive testing of welds (ISO 17640:2010, MOD) ---GB/T 12604:1-2020 Nondestructive testing terminology ultrasonic testing (ISO 5577:2017, MOD) ---GB/T 23902-2021 Non-destructive testing ultrasonic testing ultrasonic diffraction sound technology testing and evaluation methods (ISO 16828: 2012, IDT) The following minimal editorial changes have been made to this document: --- Added a note to 10:1:3 (see 10:1:3): Please note that some content of this document may be patented: The issuing agency of this document assumes no responsibility for identifying patents: This document is proposed by China Machinery Industry Federation: This document is under the jurisdiction of the National Welding Standardization Technical Committee (SAC/TC55): This document is drafted by: Shanghai Institute of Materials Research, Guoneng Boiler and Pressure Vessel Inspection Co:, Ltd:, China Classification Society Industrial Company, Guangzhou Duo Puhler Electronic Technology Co:, Ltd:, Shanghai Special Equipment Supervision and Inspection Technology Research Institute, Zhejiang Jinzhou Pipeline Technology Co:, Ltd:, Harbin Welding Research Institute Co:, Ltd:, Zhangzhou Liangfu Steel Structure Engineering Co:, Ltd: The main drafters of this document: Jiang Jiansheng, Hao Xiaojun, Ding Jie, Jin Chao, Yin Lu, Huang Yin, Wei Daoxiang, Xu Leihui, Wang Qiang, Han Lina, Yang Yuqing, Zhai Lianna, Su Jinhua, Wang Bin, Chen Kai, Chen Guoliang: Nondestructive testing of welds Ultrasonic testing Application of Time-of-Flight Diffraction (TOFD)

1 Scope

This document specifies the semi-automatic or fully automatic Ultrasonic Time-of-Flight Diffraction (TOFD) technique for fusion welded joints of metallic materials with a thickness of not less than 6mm Applications: This document applies to simple geometry full-penetration welded joints of plates, tubes and vessels where both the weld metal and the base metal are low carbon steel or low alloy steel: Where appropriate, TOFD can also be used for other applications with lower ultrasonic attenuation (especially scattering attenuation) Material: This document provides that the material's longitudinal sound velocity is (5920 ± 50) m/s and the transverse wave sound velocity is (3255 ± 30) m/s: Relevant regulations for the application of TOFD: When testing other materials with different sound speeds, it is necessary to consider the effect of sound speed: This document, with reference to ISO 16828, provides the application of TOFD technology for the detection, positioning and dimensional measurement of discontinuities in fusion welded joints: Use and guidance on the unique capabilities and limitations of this technology: TOFD can be used as a separate technology in manufacturing process inspection and in-service inspection: It can also be used in combination with other non-destructive testing (NDT) methods or techniques: This document establishes four test levels (A, B, C and D) as specified in ISO 17635: The higher the detection level, the more reliable the detection higher: This document also provides guidance on selecting the level of detection: This document allows the evaluation of TOFD indications for subsequent acceptance: The evaluation is based on the transmitted wave, reflected wave and diffraction of the TOFD image Evaluation of wave signals: This document does not include discrete acceptance levels:

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document: ISO 5577 Non-destructive testing ultrasonic testing terminology (Non-destructive testing-Ultrasonic testing-Vocabula- ry) ISO 9712 Non-destructive testing personnel qualification and certification (Non-destructive testing-Qualification and certification- tionofNDTpersonnel) ISO 16828 Non-destructive testing, ultrasonic testing, ultrasonic diffraction sound, technical testing and evaluation methods (Non-destructive testing- Ultrasonictesting-Time-of-flightdiffractiontechniqueasamethodfordetectionandsizingofdiscon- tinuities) ISO 17640 Ultrasonic testing techniques, testing levels and evaluation for non-destructive testing of welds (Non-destructive testing of welds-Ultrasonictesting-Techniques,testinglevels,andassessment) ISO 22232-1 Performance and inspection of ultrasonic testing equipment for nondestructive testing - Part 1: Instruments (Non-destructive testing-Characterizationandverificationofultrasonicexaminationequipment-Part 1:Instruments) ISO 22232-2 Performance and inspection of ultrasonic testing equipment for nondestructive testing - Part 2: Probes (Non-destructive testing-Characterizationandverificationofultrasonicexaminationequipment-Part 2:Probes)

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