GB/T 39282-2020Non-destructive testing—Testing method for pulse-echo testing using electromagnetic acoustic transducer (EMAT) techniques (English PDF)
无损检测 电磁声换能器（EMAT）技术脉冲回波检测方法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
November 19, 2020
Implementation date
June 1, 2021
Scope
GB/T 39282-2020 is the English-translated version of 无损检测 电磁声换能器（EMAT）技术脉冲回波检测方法.
GB/T 39282-2020 is the Chinese standard "Non-destructive testing—Testing method for pulse-echo testing using electromagnetic acoustic transducer (EMAT) techniques".
Its scope clause reads: This standard specifies the method for direct ultrasonic testing of discontinuous pulse echoes in materials and components using electromagnetic acoustic transducers.
This standard applies to the electromagnetic ultrasonic testing of carbon steel, low-alloy steel and non-ferrous metals with a thickness of 6mm~100mm.
Austenitic Electromagnetic of stainless steel, austenitic-ferritic duplex stainless steel, aluminum and aluminum alloy plates, titanium and titanium alloy plates, nickel and nickel alloy plates and other plates Ultrasonic testing can refer to this standard.
The electromagnetic ultrasonic testing of pipes, forgings and other raw materials may refer to this standard. Its clauses include terms and definitions; method summary.
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Document preview — GB/T 39282-2020
National Standard of the People's Republic of China
- ICS
- 19.100
- Classification
- J 04
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope1
- 2 Normative references1
- 3 Terms and definitions1
- 4 Method summary1
- 5 Safety requirements2
- 6 Personnel requirements3
- 7 Inspection process regulations3
- 8 Testing equipment and equipment3
- 9 Testing Procedure5
- 10 Evaluation and processing of test results7
- 11 Inspection records and reports8
1 Scope
This standard specifies the method for direct ultrasonic testing of discontinuous pulse echoes in materials and components using electromagnetic acoustic transducers.
This standard applies to the electromagnetic ultrasonic testing of carbon steel, low-alloy steel and non-ferrous metals with a thickness of 6mm~100mm. Austenitic
Electromagnetic of stainless steel, austenitic-ferritic duplex stainless steel, aluminum and aluminum alloy plates, titanium and titanium alloy plates, nickel and nickel alloy plates and other plates
Ultrasonic testing can refer to this standard. The electromagnetic ultrasonic testing of pipes, forgings and other raw materials may refer to this standard.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document.
For undated references, the latest version (including all amendments) applies to this document.
GB/T 9445 Non-destructive testing personnel qualification and certification
GB/T 12604.1 Non-destructive testing term Ultrasonic testing
GB/T 34885 Non-destructive testing General rules for electromagnetic ultrasonic testing
JB/T 9214-2010 Non-destructive testing A-type pulse reflection ultrasonic testing system performance test method
3 Terms and definitions
The terms and definitions defined in GB/T 12604.1 and GB/T 34885 apply to this document.
4 Method summary
4.1 Detection principle
The electromagnetic ultrasonic transducer that can generate perpendicularly incident ultrasonic waves is used for electromagnetic ultrasonic direct incidence detection.
The reflected signal information generated when detecting the discontinuous position and size, as shown in Figure 1.Electromagnetic ultrasonic straight probe can be used perpendicular to the surface of the workpiece
The bias magnetic field and the pie-shaped, ring-shaped or butterfly-shaped coil structure excite and receive the ultrasonic transverse wave incident perpendicular to the surface; it can also be used parallel to the work surface.
The bias magnetic field and the racetrack or butterfly coil on the surface of the component excite and receive the ultrasonic longitudinal waves incident perpendicular to the surface.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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