JJF 1553-2015Calibration Specification for Pendulum Tear Instruments (English PDF)

1 Scope (1)

2 References (1)

3 Terms and units of measurement (1)

4 Overview (3)

5 Metrological characteristics (3)

6 Calibration conditions (3)

7 Calibration items and calibration methods (4)

8 Calibration results (7)

9 Re-school time interval (7)

Appendix A Tearness meter calibration record (8)

Appendix B Tearness Meter Calibration Certificate Page Format (10)

Appendix C Methods and Examples of Uncertainty Measurement of Tearness Measurement (11)

Introduction

This specification is prepared according to JJF 1071-2010 "National Metrological Calibration Rules".

This specification in the development process with reference to the JJF (textile) 049-2012 "pendulum fabric tearing instrument calibration norms" JJG (light industry) 63-2000 "paper and cardboard tearing instrument"; quoted GB/T 455-2002 "paper and cardboard tear Determination of the degree of "GB/T 3917.1-2009" Tear properties of textile fabrics Part 1. Impact pendulum tearing Determination of tear strength ", GB/T 16578.2-2009" Determination of tear resistance of plastic films and sheets Section 2 Part; Elmendorf method ", industry standard HG/T 2581.2-2009" rubber or plastic coating Determination of tear resistance of woven fabrics - Part 2. Impact pendulum method and ISO 1974-2012 paper tear (Paper-Determinationoftearingresistance-Elmendorfmethod), & lt; RTI ID = 0.0 & gt;

American pulp and paper industry technical association TAPPIT414om-12 "paper tear" (Internaltearingre-standards and symbols, and related technical requirements, technical indicators and test methods.

This specification gives calibration conditions, calibration items and calibration methods for the measurement characteristics of the pendulum tear meter.

This specification is the first release.

Calibration standard for pendulum tearing instrument

1 Scope

This specification applies to the potential energy method pendulum tearing instrument (hereinafter referred to as tearing instrument) calibration.

2 reference file

This specification refers to the following documents.

Paper and board - Determination of tearing degree GB/T 455-2002 Textiles - Tearing properties of fabrics - Part 1. Impact pendulum method for tearing Determination Plastics - Film and sheet - Determination of tear resistance - Part 2.

Mendorf (Elmendorf) method Rubber and plastics - Determination of tear resistance of coated fabrics - Part 2. Determination of tear resistance.

Hit pendulum method

ISO 1974-2012 Paper Teariness Determination Paper-Determinationoftearing resistanceElmendorfmethod TAPPIT414om-12 paper tear (Internaltearingresistance ofpaper) for dated references, only the dated edition applies to this specification; references that are not dated , The latest version (including all modifications) applies to this specification.

3 terms and units of measurement 3.1 terminology Tearing force Under the specified conditions, the average force required to continue tearing the specimen along the pre-cut, that is, the power consumed by tearing the specimen, the ratio of the tear length of the specimen. The unit is Newton (N).

3.1.2 Tearing degree tearingtesistance Tearing the average force required for each pre-cut specimen, that is, tearing the tear strength of the pre-cut specimen and tearing it at the same time Number of sample layers. The unit is Newton (N).

3.1.3 tear length lengthoftear Specified conditions in the specimen side of the incision, the incision terminal to the other side of the distance. The unit is in millimeters (mm).

3.1.4 pendulum capacity tearcapacityofpendulum the rated tearing force corresponding to each pendulum, that is, the maximum tearing force given by the manufacturer. The unit is Newton (N).

3.1.5 Tear initial angle initialangleoftear in the initial position, the fixture clamps the seam along the center line of the pendulum axis and the plane between the plane of the center line of the pendulum axis Angle. The unit is degrees (°).