JJF 1870-2020 English PDF

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JJF 1870-2020: Calibration Specification for Inclinations and Swings Test Equipment
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJF 1870-2020	399	Add to Cart	4 days	Calibration Specification for Inclinations and Swings Test Equipment	Valid

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Basic data

Standard ID: JJF 1870-2020 (JJF1870-2020)
Description (Translated English): Calibration Specification for Inclinations and Swings Test Equipment
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A53
Word Count Estimation: 17,170
Date of Issue: 2020-09-11
Date of Implementation: 2021-03-11
Regulation (derived from): Announcement No. 40 (2020) of the State Administration for Market Regulation
Issuing agency(ies): State Administration for Market Regulation

JJF 1870-2020: Calibration Specification for Inclinations and Swings Test Equipment

---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.
Calibration Specification for Inclinations and Swings Test Equipments National Metrology Technical Specifications of the People's Republic of China Calibration specification for tilt and swing test bench 2020-09-11 released 2021-03-11 implementation Issued by the State Administration for Market Regulation Calibration specification for tilt and swing test bench Focal point. National Technical Committee of Vibration, Shock and Speed Measurement Main drafting unit. Beijing Institute of Aerospace Metrology and Testing Technology Participated in the drafting unit. China Institute of Metrology AVIC Beijing Great Wall Metrology and Testing Technology Research Institute Suzhou Dongling Vibration Testing Instrument Co., Ltd. China Testing Technology Research Institute This specification entrusts the National Technical Committee of Vibration, Shock and Speed Measurement to interpret The main drafters of this specification. Zhu Gang (Beijing Institute of Aerospace Metrology and Testing Technology) Yang Xiaowei (Beijing Institute of Aerospace Metrology and Testing Technology) Liu Xin (Beijing Institute of Aerospace Metrology and Testing Technology) Participating drafters. Cai Chenguang (China Institute of Metrology) Zeng Wu (Beijing Great Wall Metrology and Testing Technology Research Institute of AVIC) Xu Man (Suzhou Dongling Vibration Testing Instrument Co., Ltd.) Zhu Sha (China Academy of Testing Technology)

table of Contents

Introduction (Ⅱ) 1 scope (1) 2 Reference documents (1) 3 Terms and definitions (1) 3.1 Tilt (1) 3.2 Swing (1) 4 Overview (1) 5 Measurement characteristics (2) 5.1 Indication error of tilt angle (2) 5.2 Indication error of swing angle (2) 5.3 Indication error of rocking acceleration (2) 5.4 Indication error of swing period (2) 5.5 Swing waveform distortion (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 method (4) 8 Calibration result expression (7) 9 Recheck interval (7) Appendix A Examples of Uncertainty Evaluation of Rocking Angle Measurement (8) Appendix B Reference Format of Calibration Original Record (11) Appendix C Reference Format of the Internal Page of the Calibration Certificate (12)

Introduction

This specification is compiled in accordance with the rules and format given in JJF 1071-2010 "Rules for Compiling National Metrology and Calibration Specifications" system. The measurement uncertainty is evaluated according to the rules given in JJF 1059.1-2012 "Evaluation and Expression of Measurement Uncertainty". The terms of tilt and swing in this specification refer to GB/T 2423.101-2008 "Environmental Test of Electrical and Electronic Products" Part 2.Test Method Test. Tilt and Sway "The terms are given. The calibration tilt angle mentioned in this specification, The swing angle, period and other parameters refer to GB/T 2423.101-2008 and GJB150.23A-2009 "Military Equipment laboratory environmental test methods Part 23.Tilt and rocking test" The specified test technical conditions are given. This specification is released for the first time. Calibration specification for tilt and swing test bench

1 Scope

This specification applies to the calibration of the tilt and swing test bench (hereinafter referred to as the test bench).

2 Reference documents

This specification refers to the following documents. JJG948 Electric Vibration Test System JJF 1059.1-2012 Measurement Uncertainty Evaluation and Expression JJF 1156-2006 Vibration impact speed measurement terms and definitions GB/T 2423.101-2008 Environmental testing of electrical and electronic products Part 2.Test method Test. Tilt and swing GJB150.23A-2009 Military equipment laboratory environmental test method Part 23.Tilt and swing test For dated reference documents, only the dated version applies to this specification; for undated reference documents, The latest version (including all amendments) is applicable to this specification.

3 Terms and definitions

3.1 Tilt It includes two forms of trim and heel. Trim is the mid-longitudinal section of the ship perpendicular to the stationary water surface, but the mid-transverse section and The floating state when the plumb surface is at a trim angle. The heel is the mid-transverse section of the ship perpendicular to the stationary water surface, but the mid-longitudinal section and the lead The floating state when the hammer surface is at a heel angle. 3.2 Swing There are six forms of pitch, roll, bow, sway, sway and heave. Rolling, pitching and bowing refer to the ship moving around The alternating angular displacement movement made by the three coordinate axes of longitudinal, lateral and vertical; swaying, swaying and heaving refer to the ship A reciprocating translational movement made along its vertical, horizontal and vertical axes.

4 overview

Tilting and swaying test bench is used to simulate the ship's inclination caused by marine accident, handling, unbalanced loading and wind Sway environment, as well as sine swing and sine linear motion caused by external forces such as wind and waves. territory. The test bench can simulate pitch, roll, pitch, roll, bow, sway, sway and heave and their mutual Coupled movement. The definition of the tilt and swing direction of the test bench is shown in Figure 1. ......

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