EUROLAB, with its state-of-the-art accredited laboratories and expert team, offers precise and rapid testing services within the scope of ASTM D624 testing. This testing method describes procedures for measuring a property of conventional vulcanized rubber and thermoplastic elastomers called tear strength.
ASTM D624 measures the force per unit thickness required to rupture, initiate, or propagate a tear in a sheet of rubber in the form of one of several test piece geometries.
Tear strength can be greatly affected by stress-induced anisotropy, stress distribution, strain rate, and test piece size. Results obtained in tear strength testing can only be considered a measure under the conditions of that test and may not have a direct relationship to service performance. The importance of tear testing should be determined based on individual application or product performance.
Rupture of rubber is a mechanical rupture process initiated and propagated in a region of high stress concentration, causing cuts, defects or local deformation. The following definitions describe different techniques for measuring tear resistance, i.e. the tear strength required for use with this standard.
Type A tear strength: The maximum force required to grow a notch or cut in a Type A (notched crescent) test piece by tearing the rubber divided by the thickness of the test piece.
Type B tear strength: The maximum force required to grow a notch or cut in a Type B (notched protrusion end) test piece by tearing the rubber divided by the thickness of the test piece.
Type C tear strength: It is the value obtained by dividing the maximum force required to cause rupture of a Type C (right-angled) test piece by the thickness of the test piece.
Tear strength of T Type or trousers: It is the value obtained by dividing the average or median force required to propagate a tear in a Type T (trousers) test piece by the thickness of the test piece, calculated in accordance with the procedures in this method.
CP type or restricted path tear strength: It is the value obtained by dividing the average or median force required to propagate a tear in a CP type (constrained path) test piece by the thickness of the torn section, calculated in accordance with the procedures in this method.
EUROLAB assists manufacturers with ASTM D624 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.
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