Offering you a complete choice of products which include soft material thickness gauge, pu foam indentation hardness tester, ball resilience tester and shear fatigue tester for pu foam.
Soft Material Thickness Gauge
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Country of Origin
Made in India
Linear dimensions of soft materials such as foams, below 150 mm are measured by using a soft material thickness gauge having an arrangement to measure thickness with an indenter of specified area exerting a specified pressure on the test specimen whose thickness is being measured.
The “Asian” Soft Material Thickness Gauge for soft materials such as foams consists of a dial indicator fitted on a metallic frame and a round indentor of specified size and weight to apply a specified pressure on the test specimen.
It is a kind of Ball Resilience Tester. The resilience of polyurethane foam is determined by dropping a metallic sphere on a slab of foam kept on a horizontal surface from a height of 500 mm and finding the height to which it rebounds after striking the surface of the foam. The Ball Resilience Tester for polyurethane foam consists of a flat horizontal platform, a vertical acrylic tube in which the sphere is dropped, and a hand operated arrangement to release the sphere from a pre-determined height. It has four leveling screws to make it horizontal. The acrylic tube is held over the base with the help of a holding block, which can be moved vertically to adjust the height of the tube to enable test specimens of different thicknesses which are to be tested. This adjustment is carried out with the help of a screw and due to this, the height of the tube can be set. The tube is held firmly after adjustment so that it does not rock during the test. The metallic sphere is kept in a circular opening in the metallic cover of the acrylic tube. It can be released by pressing a spring-loaded support, which is so designed as to release the sphere without imparting any initial linear or rotary movement to it. The equipment is finished in blue metallic painting.
The ability of polyurethane foam slabs to withstand the effect of repeated compressions is determined with the help of a shear fatigue test. In this test, test specimen in shape of a square block is held over a flat reciprocating platform and is pressed down from the top by a horizontal cylindrical roller inclined at an angle of 15° to the direction of motion of the platform. The platform is moved for a specified number of cycles and the effect of repeated compressions produced on the test specimen is evaluated by finding the change in its thickness and indentation hardness index