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GB/T 34361-2017: Non-destructive testing -- Test method for frequency scanning eddy current testing
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 34361-2017 | English | 199 |
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Non-destructive testing -- Test method for frequency scanning eddy current testing
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GB/T 34361-2017
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Basic data | Standard ID | GB/T 34361-2017 (GB/T34361-2017) | | Description (Translated English) | Non-destructive testing -- Test method for frequency scanning eddy current testing | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J04 | | Classification of International Standard | 19.100 | | Word Count Estimation | 10,140 | | Date of Issue | 2017-10-14 | | Date of Implementation | 2018-05-01 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | GB/T 34361-2017: Non-destructive testing -- Test method for frequency scanning eddy current testing
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Non-destructive testing - Test method for frequency scanning eddy current testing
ICS 19.100
J04
National Standards of People's Republic of China
Nondestructive testing sweep eddy current testing methods
2017-10-14 Published
2018-05-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
China National Standardization Administration released
Directory
Foreword Ⅲ
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 Method summary 1
5 testing equipment 2
6 test equipment calibration 2
7 Qualifications 3
8 test requirements 3
9 test report 3
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard by the National Standardization Technical Committee nondestructive testing (SAC/TC56) and focal point.
This standard was drafted unit. Edson (Xiamen) Electronics Co., Ltd., Armored Force Engineering Institute, Beijing Institute of Aeronautical Materials, Chinese Academy of Sciences
Metal Research Institute, China Railway Science Research Institute, China Nuclear Power Research Institute, Naval Aviation Equipment NDT Center.
The main drafters of this standard. Lin Junming, Dong Shiyun, Xu North, Cai Guixi, Huang Fengying, Li Dong, Dong Lihong, Sun Jinli, Linfa Bing.
Nondestructive testing sweep eddy current testing methods
1 Scope
This standard specifies the swept frequency eddy current testing methods testing equipment, equipment calibration, personnel qualifications, testing requirements and test reports.
This standard applies to the use of swept eddy current method to measure the surface of metal materials, single or multi-layer coating (non-metallic coating or metal coating)
Thickness and the surface of the test metal material is not continuous.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 9445 non-destructive testing personnel qualification and certification
GB/T 12604.6 non-destructive testing term eddy current testing
3 Terms and definitions
GB/T 12604.6 defined in the following terms and definitions apply to this document.
3.1
Sweep frequency frequencyscanning
A time period according to the frequency of the coil in order to provide a variety of excitation frequency (usually not less than 10), usually positive
Sine wave.
3.2
Sweep eddy current detection frequencyscanningeddycurrenttesting
Excitation frequency changes with time cycle eddy current detection method, each sweep frequency were detected signal, and in the same impedance plane
On the display output, the use of impedance signal patterns to compare the difference screening.
3.3
Sweep points pointsoffrequencyscanning
The number of detection frequencies selected during each sweep cycle (beat). The more sweep points, the easier it is to detect undetected objects
Continued.
4 Method summary
Sweep frequency eddy current testing method is used to detect the thickness of the coating (non-metallic coating or metal coating) on the surface of the material to be inspected,
Frequency of penetration of different depths can be measured at different depths of the thickness of the multi-layer coating and metal discontinuities.
Detectable test materials have the following characteristics.
--- The surface of a single or multi-layer non-metallic coating of metal materials;
--- The surface of a single layer or multi-layer metal coating of metal materials;
--- The surface of a single or multi-layer non-metallic coating and metal coating of metal materials.
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