|
|
piece 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 a 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 axis of the pendulum.
An adjustable knife is also mounted on the bracket on which the pendulum and the fixed clamp is mounted. It is centered between the two clamps and is used for making the initial slit in the test specimen.
The apparatus is finished in metallic painting and bright chrome plating to give it corrosion resistant finish.
Augmenting weights for increasing the range of the tester for testing high strength materials are available as optional accessories. Low strength materials can be tested by mounting multiple specimens at the same time. |
|
|
|
|
 |
Technical Data : |
|
|
 |
Capacity |
: 1600 g (can be increased to 3200/6400 g or weights) |
|
|
|
Clamping surfaces of each clamp |
: 36 mm wide x 16 mm high. |
|
|
|
Distance between clamps |
: 2.8 mm |
|
|
|
Tearing distance |
: 43 mm |
|
|
|
Scale reading |
: 0 – 100% of range |
|
|
|
|
|
Related Standards : |
|
|
|
|
IS 6489 – 1971 |
Method of determination of Tear Strength of woven textile fabrics by Elmendorf Tester |
|
|
|
|
|
ASTM D 689 |
for Internal Tearing Resistance of Paper. |
|
|
|
|
|
ASTM D 1424 |
Tear Resistance of Woven Fabrics by Falling Pendulum (Elmendorf) Apparatus. |
|
|
|
|
|
ASTM D 1922 |
Propagation Tear Resistance of Plastic Film and Thin Sheeting by Pendulum Method. |
|
|
|
