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- Site：Home > Textile Instruments > Fabric Physical Testing Instruments > Elemendorf Tear Tester SL-F05
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- Elemendorf Tear Tester
The tearing strength of fabrics, papers, plastic films, or other similar materials is determined by measurement of the work done in tearing through a fixed length of the test specimen using Elemendorf Tear Tester.
The Elemendorf Tear Tester consists of a brass sector pendulum pivoted on anti-friction ball bearings on a vertical bracket fixed on a rigid metallic base. The test specimen is in shape of a rectangle and is held between two clamps, one of which is mounted on the pendulum and the other is mounted on the vertical bracket. The clamps are mounted in such a manner that their holding faces are aligned with each other when the pendulum is locked in its raised position. The pendulum is released by lifting the release lever. This action causes the test specimen to tear right through. The tearing strength is indicated on a scale fitted on the pendulum against a low friction pointer pivoted on the same axis as the pendulum.
An adjustable knife is mounted on the bracket on which the pendulum and the fixed clamp is mounted. The blade is located between the two clamps and is used for making the initial slit in the test specimen. A brass check weight is supplied with the tester for verification of its calibration. The apparatus is finished in blackmalt finish and bright chrome plating to give it a corrosion resistant finish.
Augmenting weights for increasing the capacity of the tester are available as optional accessories. For testing of low strength materials, multiple specimens may be mounted at the same time.
TECHNICAL DATA :
Capacity
1600 g (can be increased to 3200 g or 6400 g by adding augmenting weights.
Clamping Surfaces of each clamp
36 mm wide x 16mm high.
Distance between clamps
2.8 mm
Tearing Distance
43 mm
Scale reading
0 to 100% of range.
RELATED STANDARDS :IS 6489 – 1971
Method for Determination of Tear Strength of Woven Textile Fabrics by Elemendorf Tester.
ASTM D 689-1979
Standard Test Method for Test for Internal Resistance of paper.
ASTM D 1424 - 1983
Standard Test Method for Tear Resistance of Woven Fabrics by falling Pendulum (Elemendorf) Apparatus.
ASTM D 1922 - 1967
Standard Test Method for Propagation of Tear Resistance of Plastic Film and Thin Sheeting by Pendulum Method.
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