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Testing Wet Tensile Strength of Absorbent Paper

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On the way of innovation, Tinius Olsen now uses its Tensile Testing Machine to put up a test to measure the wet tensile strength and performance of tissue and absorbent paper. Wet tensile strength is the maximum force supported by the unit width of a wet test piece of tissue/absorbent paper until the onset of rupture using a tensile test. EN 12625 defines th e preparation of the test specimen in terms of the edge quality and dimensional tolerances . The test specimen is placed into a Tinius Olsen tensile testing machine upper clamp so that a loop is produced around what is called the “Finch” soaking device bar; the soaking vessel containing water is raised allowing soaking for 15 seconds, the tensile force is then applied & once the specimen ruptures, the soaking vessel is removed. Results are automatically reported through Horizon test software in terms of Mean wet tensile strength (N/m) & Relative wet tensile strength (%) which qualifies the strength &...
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S0971 - Tinius Olsen - ASTM D143 Wood Shear parallel to grain

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The Standard ASTM D143 outlines several methods for testing wood. As a building material it is essential to understand the structural integrity of timber this is what ASTM D143 is designed to find out… This is a heavy duty application (wood is an interesting substance in compressing and the jaws can get ‘gummed-up’ with the wood sap) and so for this particular application a Tinius Olsen H75KS system is used. The S0971 is designed to perform one of the tests in the ASTM D143 stable. It shears the wood between two vertically offset, horizontally parallel faces. This system uses a self adjusting blade to shear the sample against another supporting blade that is offset 3mm from the main cutting face. This distance can be adjusted using a simple shim. This simple modification could allow for future testing in these standards... ASTM D 143-94, ASTM D 905-98, ISO 6238 2001, JIS K 6802-1973, JIS Z 2117-1977, BS 373: 1957 and JAS 601-1974 testing standards. Features: This system uses a qui...
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Grip Jaw Face Solution for Tensile Specimens Cut from Pipe

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When conducting tensile tests on sections cut from pipes, be it plastic gas or water pipes or steel pipes, the resulting test specimen dumbbell or “coupon” shape (dimensions of which are defined by the relevant test standard be it ISO, ATSM, GB, GOST etc) exhibits the curve of the pipe, this means it cannot generally be held for the duration of the tensile test using flat parallel grip faces as the curvature of the specimen prevents a good amount of contact between the specimen and the grip faces. The solution is a grip face which mirrors the profile of the curve in the pipe (dumbbell or coupon specimen) a V on one side and radius on the other;   At Tinius Olsen we are able to precisely manufacture and supply such faces to mirror the radius of any curved specimen and implement in our tensile wedge action grips. The faces typically have a 2 mm pitch serration and hardened to 60RC in support of good specimen gripping. The faces are interchangeable for diff...
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