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GB/T 20654-2006 (GBT 20654-2006)

GB/T 20654-2006_English: PDF (GBT20654-2006)
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GB/T 20654-2006English374 Add to Cart Days<=3 Protective clothing -- Mechanical properties -- Test method for the determination of the resistance to puncture and dynamic tearing of materials GB/T 20654-2006 Valid GB/T 20654-2006
 

BASIC DATA
Standard ID GB/T 20654-2006 (GB/T20654-2006)
Description (Translated English) Protective clothing. Mechanical properties. Test method for the determination of the resistance to puncture and dynamic tearing of materials
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard C73
Classification of International Standard 13.340.10
Word Count Estimation 19,186
Date of Issue 2006-12-07
Date of Implementation 2007-07-01
Adopted Standard ISO 13995-2000, IDT
Drafting Organization People's Liberation Army General Logistics Department Quartermaster Equipment Institute
Administrative Organization National Technical Committee of Standardization for Personal Protective equipment
Regulation (derived from) National Standard Approval Announcement 2006 No.11 (Total No.98)
Proposing organization State Administration of Work Safety
Issuing agency(ies) Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China; Standardization Administration of China
Summary This standard specifies the protective clothing materials resistant to puncture and dynamic tearing of test methods. This pierce and tear or damage due to clothing apparel integrity is destroyed and harm the wearer. When the risk of accidents and injuries associated with piercing degree tear, you can determine the performance levels specified materials to be used.

GB/T 20654-2006
Protective clothing.Mechanical properties.Test method for the determination of the resistance to puncture and dynamic tearing of materials
ICS 13.340.10
C 73
National Standards of People's Republic of China
GB/T 20654-2006/ISO 13995..2000
Protective clothing mechanical properties
Test method for puncture resistance and dynamic tear of materials
Protective clothing-Mechanical properties-Test method for the determination of
the resistance to puncture and dynamic tearing of materials
(ISO 13995..2000 JDT)
2006-12-07 Released.2007-07-01 Implementation
Chinese people llfl issue t = 4
Protective clothing mechanical properties
Test method for puncture resistance and dynamic tear of materials
1 Scope
The wood standard specifies test methods for puncture resistance and dynamic tear resistance of protective clothing materials. This puncture and tear can damage clothing or
The integrity of the outfit is compromised and the wearer is harmed. When the risk of accidental injury is related to the extent of puncture and tear
The performance level dictates the materials to be used.
2 terms and definitions
Column F terms and definitions apply to wood standards.
2.1
Test specimen mounting block
A metal or plastic holder that holds the specimen during the test.
2.2
Tearing blade
A blunt-tipped blade protruding from the blade set to pierce and tear the specimen.
Note. The lower edge of the end of the hard steel tearing blade is a wedge with a certain arc, so it is not sharp enough to pierce the test material. Blade body thickness
Bu's surface is a semicircle, which is used to tear the specimen. The blade has the same function as the spike in ASTM D 2582.1990, but it is more rigid,
Therefore, it can withstand greater forces.
3 mm,
3 Requirements for the use of this standard
This standard specifies the test method for puncture resistance and dynamic tear resistance of materials. If cited as a standard test method for a product,
It shall contain the necessary information for the application of this standard to this product. Standards referencing this standard should at least include the following.
a) Normative references to this standard.
b) Sample description. sample source, sample size, sample preparation and pretreatment (if any).
c) additional details or differences from the methods described in this standard.
-Special clamping and stretching methods of the sample;
Impact energy and velocity used in the test;
Positioning relative to the specified axis impact of the sample;
-Number of trials;
-Special techniques for measuring the tear length of specific materials or materials with specific applications.
d) Other contents to be provided in the test report.
-Product performance requirements and corresponding "levels". Performance requirements shall adopt the performance levels defined in this standard or
When testing under certain conditions, the average tear length is greater than a certain value, and the maximum value is not greater than a certain value ".
-A range of products that meet the requirements.
Appendix A provides information and guidelines for using this standard in product standards.
4 Test equipment and test process
4.1 Principle of puncture and dynamic tear test
The fabric or leather sample is firmly clamped on the fixed frame, and the sample body is kept hanging down. The upper part of the shelf is a quarter circle for easy sample
Leaning against it, there is a curved surface facing the tearing blade that drops onto the specimen, and a weight is attached to the tearing blade. The tip of the tear blade is sharp,
Can penetrate the curved part of the sample. The sleek lower part of the blade can tear down the overnight part of the sample.
energy. There is a groove on the vertical surface of the fixed frame, so that the end of the blade is on the fixed frame and the middle of the blade can be torn.
For very strong materials, the length of the tear produced by the sharp blade tip during puncture is less than 5 mm. And for weak
Material, this effect is small. Selecting the end point or selecting a qualified value of 40 mm can ensure that the