Path: Home > JJ > Page8 > JJF 1731-2018

Price & Delivery

US$419.00 · In stock · Download in 9 seconds
JJF 1731-2018: Calibration Specification for Ultrasonic C Scan Equipments
Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure
Status: Valid

Std ID	Version	USD	Buy	Deliver [PDF] in	Title (Description)
JJF 1731-2018	English	419	Add to Cart	4 days [Need to translate]	Calibration Specification for Ultrasonic C Scan Equipments

JJF 1731-2018: Calibration Specification for Ultrasonic C Scan Equipments

---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 C-scanning equipment calibration specification) National Metrology Technical Specification Ultrasonic C-scanning equipment calibration specification Published on.2018-12-25 2019-03-25 implementation State Market Supervisory Administration released Ultrasonic C-scanning equipment calibration specification Focal Point. National Acoustic Metrology Technical Committee Drafting unit. China Institute of Metrology Orivision (Beijing) Technology Co., Ltd. Beijing University of Chemical Technology Beijing Great Wall Metrology and Testing Technology Research Institute This specification entrusts the National Acoustic Metrology Technical Committee to explain Drafters of this specification. Xing Guangzhen (China Institute of Metrology) Kai Kailiang [Oerui (Beijing) Technology Co., Ltd.] Zhu Haijiang (Beijing University of Chemical Technology) Wang Hongbo (Beijing Great Wall Measurement and Testing Technology Research Institute) Yang Ping (China Institute of Metrology)

table of Contents

Introduction (II) 1 Scope (1) 2 References (1) 3 Terms and units of measurement (1) 3.1 A axis (1) 3.2 B axis (1) 3.3 W axis (1) 3.4 Axis travel (1) 3.5 Axis unidirectional positioning accuracy (1) 3.6 Axis bidirectional positioning accuracy (2) 3.7 Axis unidirectional repeat positioning accuracy (2) 3.8 Axis bidirectional repeat positioning accuracy (2) 3.9 Signal to noise ratio under system nominal sensitivity (2) 3.10 System Comprehensive Mechanical Error (2) 3.11 Image Transition Area (2) 3.12 Image Distortion Coefficient (2) 3.13 Scanning shaft mechanical error coefficient (2) 4 Overview (2) 5 Measurement characteristics (2) 5.1 Horizontal linearity error (2) 5.2 Vertical linearity error (2) 5.3 Attenuator attenuation error (3) 5.4 Dynamic Range (3) 5.5 Maximum sensitivity (3) 5.6 Detection sensitivity margin (3) 5.7 Resolution (3) 5.8 Axis travel (3) 5.9 Axis unidirectional/bidirectional positioning accuracy (3) 5.10 Axis unidirectional/bidirectional repeat positioning accuracy (3) 5.11 Signal to Noise Ratio under System Nominal Sensitivity (3) 5.12 Image distortion coefficient k (3) 5.13 Scanning shaft mechanical error coefficient Es (3) 6 Calibration conditions (3) 6.1 Environmental conditions (3) 6.2 Measurement standards and other equipment (3) 7 Calibration items and calibration methods (4) 7.1 Calibration Project (4) 7.2 Calibration method (4) 8 Expression of calibration results (7) 8.1 Processing of calibration results (7) 8.2 Calibration Certificate (7) 8.3 Uncertainty evaluation of calibration results (7) 9 re-study interval (7) Appendix A Contents of the Calibration Certificate (8) Appendix B Example of Measurement Uncertainty Evaluation of Scanning Axis Mechanical Error Coefficient (10) Appendix C Ultrasonic C-Scan Equipment Calibration Test Block (12)

Introduction

This specification is based on the rules and formats given in JJF 1071-2010 “Rules for the Preparation of National Metrology Calibration Specifications”. Line preparation. This specification refers to JJG746-2004 "ultrasonic flaw detector"; JJF 1251-2010 "coordinate positioning measurement system" Calibration Specification"; GB/T 17421.2 "General Rules for Machine Tool Inspection - Part 2. Positioning Accuracy and Repetition of CNC Axis Ultrasonic flaw detection performance and coordinate positioning system calibration method described in Determination of Bit Accuracy. This specification is the first release. Ultrasonic C-scanning equipment calibration specification

1 Scope

This specification applies to the calibration of ultrasonic C-scanning equipment for regular workpieces (plates, rods, tubes), and other similar equipment. Calibration can also be used as reference.

2 reference files

This specification refers to the following documents. JJG746-2004 Ultrasonic Flaw Detector JJF 1001-2011 General Measurement Terms and Definitions JJF 1034-2005 Acoustic measurement terminology and definition JJF 1251-2010 Coordinate positioning measurement system calibration specification GB/T 3102.7-1993 The quantity and unit of acoustics GB/T 3947-1996 acoustic terminology GB/T 12604.1-2005 Non-destructive testing terminology ultrasonic testing GB/T 17421.2 General rules for machine tool inspection - Part 2. Positioning accuracy and re Determination For dated references, only dated versions apply to this specification; undated quotations The latest version (including all amendments) applies to this specification.

3 terms and units of measure

This specification uses the quantities and units specified in GB/T 3102.7-1993 and GB/T 17421.2. This specification uses JJF 1034-2005, JJF 1251-2010, JJF 1001-2011 and JJG746-2004 Definitions and terms and definitions below. 3.1 A-axis Aaxis The axis that rotates around the X axis. Note. The scan axis is the X axis. 3.2 B-axis Baxis The axis that rotates around the Y axis. Note. The stepping axis is the Y axis. 3.3 W axis Waxis An axis that rotates about the Z axis. Note. The axis perpendicular to the scanning surface is the Z axis. 3.4 Axis stroke axistravel[JJF 1251-2010] The maximum linear stroke of the moving part moving along the axis or the maximum stroke around the axis under digital control. 3.5 Axis unidirectional positioning accuracy unidirectionalaccuracyofpositioningofanaxis[JJF 1251- ...