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JJF 1657-2017 English PDF

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US$489.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJF 1657-2017: Calibration Specification for Falling-hammer Impact Force Standard Equipment
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJF 1657-2017	489	Add to Cart	4 days	Calibration Specification for Falling-hammer Impact Force Standard Equipment	Valid

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Basic data

Standard ID: JJF 1657-2017 (JJF1657-2017)
Description (Translated English): Calibration Specification for Falling-hammer Impact Force Standard Equipment
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A53
Classification of International Standard: 17.100
Word Count Estimation: 21,274
Date of Issue: 2017-11-20
Date of Implementation: 2018-02-20
Quoted Standard: JJG 233-2008; JJG 791-2006; JJG 973-2002; JJF 1219-2009; GB/T 20485.1-2008; GB/T 20485.13-2007; GB/T 20485.22-2008
Regulation (derived from): AQSIQ Notice 2017 No. 103
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine
Summary: This standard applies to the calibration of drop impact force standard devices.

JJF 1657-2017: Calibration Specification for Falling-hammer Impact Force Standard 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 standard for drop hammer impact standard equipment) People's Republic of China National Metrology Technical Specifications Falling Hammer Impact Standard Equipment Calibration Specification Published on.2017-11-20 2018-02-20 Implementation The State Administration of Quality Supervision, Inspection and Quarantine issued Drop hammer type impact force standard device Calibration specification Agency. National Force Hardness Measurement Technical Committee Drafted by. Beijing Great Wall Metrology and Measurement Technology Research Institute Zhejiang Institute of Metrology China Institute of Metrology This specification entrusts the National Force Hardness Measurement Technical Committee to explain The main drafters of this specification. Li Shanming (Beijing Great Wall Metrology and Measurement Technology Institute) Zeng Limin (Zhejiang Provincial Institute of Metrology) Meng Feng (China Institute of Metrology) Participating drafters. Ni Shouzhong (Zhejiang Provincial Institute of Metrology) Cao Yiqing (Beijing Great Wall Metrology and Measurement Technology Institute) Qin Haifeng (Beijing Great Wall Metrology and Measurement Technology Institute) He Xuan (Beijing Great Wall Metrology and Measurement Technology Institute)

Introduction (II) 1 Scope (1) 2 References (1) 3 Terms (1) 3.1 Lateral Movement Ratio (1) 3.2 Impact Acceleration Peak Inhomogeneity (1) 3.3 Effective mass (1) 3.4 Shock Pulse Duration (1) 3.5 Impact Acceleration Standard Kit (1) 3.6 Dynamic Force Measurement Sets (1) 4 Overview (2) 5 Metrological characteristics (2) 6 Calibration Conditions (2) 7 Calibration Items and Calibration Methods (3) 8 Expression of Calibration Results (7) 9 Re-school interval (7) Appendix A Evaluation of Uncertainty in Calibration of Standard Equipment for Drop Hammer Impact (8) Appendix B Standard Equipment for Drop Hammer Impact Calibration Original Record (12) Appendix C Standard Certificate of Calibration for Falling Hammer Impact Standards (Page 15) Appendix D Measurement System Frequency Characteristics (16)

Introduction

This specification is based on the rules stipulated in JJF 1071-2010 "Rules for the preparation of national metrological calibration specifications". This standard fully considered the national standard GB/T 20485.1-2008/ISO 16063-1 during the formulation process. 1998 《Method of Calibration for Vibration and Shock Sensors Part 1. Basic Concepts》, JJF 1011-2006 Forces and Hardness Measurement Terms and Definitions", JJF 1156-2006 "Vibration Impact Speed Measurement Terms and Definitions" Language, symbol and definition; national standard GB/T 20485.13-2007/ISO 16063-13.2001 "Vibration and Impact Sensor Calibration Methods Part 13. Absolute Calibration Using Laser Interferometry, GB/T 20485.22-2008/ ISO 16063-22.2005 "Method for calibration of vibration and shock sensors - Part 22. Calibration of impact comparison", JJG791-2006 Impact Force Acceleration Standard Device, JJF 1219-2009 Laser Vibrometer Calibration Standard The relevant calibration items, methods, and metering performances in the Fan. This specification is the first release. Falling Hammer Impact Standard Equipment Calibration Specification

1 Scope

This specification applies to the calibration of drop impact force standard devices.

2 references

This specification refers to the following documents. JJG233-2008 Piezoelectric accelerometer JJG791-2006 impact force impact acceleration standard device JJG973-2002 Impact Measuring Instrument JJF 1219-2009 Laser Vibrometer Calibration Specifications GB/T 20485.1-2008/ISO 16063-1.1998 Vibration and impact sensor calibration method Part 1 Points. Basic Concepts GB/T 20485.13-2007/ISO 16063-13.2001 Vibration and shock sensor calibration method 13th Section. Laser Interferometry Absolute Calibration GB/T 20485.22-2008/ISO 16063-22.2005 Vibration and Shock Sensor Calibration Methods No. 22 Section. Impact Comparison Calibration 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

3.1 Lateral movement than transverse movementratio The peak of impact motion in the plane perpendicular to the main direction of motion of the mass and the peak of impact motion in the main direction of motion Ratio. 3.2 Impact acceleration peak unevenness amplitudeuniformityofaccelerationpeak When the mass blocks are subjected to impact excitation pulses in the vertical direction, the impact acceleration peaks and mid positions at different positions on the masses The maximum deviation between the acceleration peaks at the heart position. 3.3 effective masss Acts on the sensitive surface of the force sensor and participates in the loading of all components with its own inertial force during the impact movement. The sum of the quantities (including freefalling masses, attachment accessories, measuring sensors, etc.). 3.4 Impact pulse duration durationofshockpulse During the impact movement, the shock pulse amplitude is greater than 10% of the peak time of the shock pulse. 3.5 Impact Acceleration Standard Package shockaccelerationstandardmeasuringinstrument Composed of an impact acceleration sensor, a signal conditioner, and a data acquisition unit to perform the impact acceleration value Measurement and analysis of the impact acceleration measurement system. 3.6 dynamic force measurement kit dynamicforcemeasuringinstrument ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJF 1657-2017_English be delivered?

Answer: Upon your order, we will start to translate JJF 1657-2017_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JJF 1657-2017_English with my colleagues?

Answer: Yes. The purchased PDF of JJF 1657-2017_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.