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JJF 1650-2017 English PDF

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JJF 1650-2017: Calibration Specification for Field Parameters of Ultrasound Flaw Detector Transducers
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JJF 1650-2017English459 Add to Cart 4 days [Need to translate] Calibration Specification for Field Parameters of Ultrasound Flaw Detector Transducers Valid JJF 1650-2017

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Standard similar to JJF 1650-2017

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Basic data

Standard ID JJF 1650-2017 (JJF1650-2017)
Description (Translated English) Calibration Specification for Field Parameters of Ultrasound Flaw Detector Transducers
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A59
Classification of International Standard 17.140
Word Count Estimation 20,211
Date of Issue 2017-11-20
Date of Implementation 2018-02-20
Quoted Standard JJF 1001; JJF 1034; GB 3102.7; GB/T 16540-1996; GB/T 18694-2002; ASTM E 1065-08
Regulation (derived from) AQSIQ Notice 2017 No. 103
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine
Summary This standard specifies the measurement characteristics, calibration conditions and calibration methods for the sound field of ultrasonic transducers (also called ��ultrasonic probes��) used for ultrasonic non-destructive testing. This standard applies to planar ultrasonic transducers and focused ultrasonic transducers with frequencies in the range of (0.5 to 15 MHz). The calibration of other ultrasonic transducers and their array sound field characteristics can also be referred to.

JJF 1650-2017: Calibration Specification for Field Parameters of Ultrasound Flaw Detector Transducers


---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.
(Ultrasonic flaw detector transducer sound field characteristics calibration specification) People's Republic of China National Metrology Technical Specifications Ultrasonic flaw detector transducer sound field characteristics calibration specification Published on.2017-11-20 2018-02-20 Implementation The State Administration of Quality Supervision, Inspection and Quarantine issued Ultrasonic flaw detector transducer sound Field characteristics calibration specifications Integral Unit. National Acoustic Measurement Technical Committee Drafted by. China Academy of Metrology Beijing Institute of Technology Jilin Provincial Institute of Metrology This specification entrusts the National Acoustic Measurement Technical Committee to explain The main drafters of this specification. Yang Ping (China Institute of Metrology) Xu Chunguang (Beijing Institute of Technology) Wenping Bin (China Academy of Metrology) Xiao Dingguo (Beijing Institute of Technology) Zhu Yan (China Institute of Metrology) Fang Facheng (Jilin Provincial Institute of Metrology)

table of Contents

Introduction (II) 1 Scope (1) 2 References (1) 3 Terms and units of measure (1) 3.1 Sound beam diameter (1) 3.2 Sound beam spread angle (1) 3.3 depth of field (1) 4 Overview (2) 5 Metrological characteristics (2) 5.1 Near field length/focal length (2) 5.2 Sound beam diameter (2) 5.3 Beam Spread Angle (2) 5.4 depth of field (2) 6 Calibration Conditions (2) 6.1 Environmental Conditions (2) 6.2 Measurement Standards and Other Equipment (2) 7 Calibration Items and Calibration Methods (3) 7.1 Calibration Items (3) 7.2 Calibration Methods (3) 8 Expression of Calibration Results (5) 8.1 Calibration Data Processing (5) 8.2 Calibration Certificate (5) 8.3 Evaluation of Uncertainty of Calibration Results (5) 9 Re-school interval (6) Appendix A Content of Calibration Certificate (7) Appendix B Evaluation Examples of Measurement Uncertainty (10) Appendix C Table of Sound Speed vs. Temperature of Deionized Water (13) Appendix D Selection of Hydrophones (14)

Introduction

This specification is based on the rules and formats given in JJF 1071-2010 "Rules for the preparation of national metrological calibration specifications". Line preparation. This specification refers to GB/T 18694-2002 "Non-destructive testing of ultrasonic testing probes and its characterization of the sound field", ASTME1065-08 Standard Guide for Evaluating Characteristics of Ultrasonic Scanners (Standard Guidefor The measuring method described in EvaluatingCharacteristicsofUltrasonicSearchUnits), the main characteristics of the sound field Refer to ASTM E1065-08, including near field length/focal length, beam diameter, beam spread angle, field depth, etc. parameter. This specification is the first release. Ultrasonic flaw detector transducer sound field characteristics calibration specification

1 Scope

This specification specifies the sound field of an ultrasonic transducer (also called “ultrasonic probe”) used for ultrasonic non-destructive testing. Metering characteristics, calibration conditions, and calibration methods. This specification applies to planes with frequencies in the range of (0.5 to 15) MHz Ultrasound transducers and focused ultrasound transducers. Other ultrasonic transducers and their arrays can be referenced for calibration of the sound field characteristics. use.

2 references

This specification refers to the following documents. JJF 1001 Universal Measurement Terms and Definitions JJF 1034 Acoustic Measurement Terms Terms and Definitions GB 3102.7 Acoustic quantities and units GB/T 16540-1996 Ultrasonic field characteristics and measurement water in the frequency range from (0.5 to 15) MHz Hearing method GB/T 18694-2002 Non-destructive testing ultrasonic inspection probe and its sound field characterization ASTME1065-08 Standard Guide for Evaluating Characteristics of Ultrasonic Scanners (Standard Guide for Eval- uatingCharacteristicsofUltrasonicSearchUnits) For dated references, only dated editions apply to this specification; all undated references The latest version (including all amendments) applies to this specification.

3 Terms and units of measure

This specification uses the related terms and definitions in JJF 1001 and JJF 1034. This specification uses the amount and unit specified in GB 3102.7. 3.1 Sound beam diameter In the section of the sound field parallel to the surface of the ultrasonic transducer, the choice is several decibels below the maximum (generally 3 dB) Or 6 dB) of a closed curve consisting of the same amplitude points and fitting it to form a circle, the diameter of the circle is the The beam diameter in millimeters (mm). 3.2 beam spread angle beamspread Taking the acoustic axis as a reference line, in a certain section of the acoustic axis direction, the acoustic pressure at the acoustic axis is selected to be lower than that at the acoustic axis. The points of decibel (usually 3dB or 6dB) are fitted into two straight lines, and the angle between the two straight lines is the segment. The sound field spread angle in degrees, in degrees (°). 3.3 depth of field depthoffield In acoustic pressure field distribution on the acoustic axis, the maximum amplitude sound pressure drops 6 dB before and after the maximum amplitude (focal point) The distance between two locations is the field depth of the ultrasonic transducer in millimeters (mm).

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