Characterizing the mechanical properties of materials is a critical aspect of the design and verification process for engineers in many industries.  Assured Testing Services has the ability to test for a variety of mechanical properties tests, including yield strength, break strength, percent elongation, modulus, reduction of area, peel (adhesion) strength, tear, and shear.   These tests are performed with a UTM (universal testing machine.)  The most basic testing involves loading test specimens between two sets of grips and stretching the specimen at a constant speed.

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​​​The types of samples that can be tested varies widely.  Some examples are polymer or metal “dog bones” or other standard die cut samples, lap shear assemblies, single sided self-adhesive labels, or finished goods such as wire, tubing, cables, electrical harness crimped terminals, foams, seat belts, o-rings, seals and gaskets, automotive moldings and trim, safety harnesses, seat belts, electrical enclosures, outdoor apparel and gear such as tent canopies, awnings, pool covers, carpet, waterproof membranes, sound deadening materials, upholstery, fasteners, paper and paperboard, packaging and construction materials.

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The objective of this testing can be to ensure products are meeting established quality control standards, verify production batch quality, aid in process design or vendor selection, identify potential design flaws or weaknesses, improve the cost of goods of a product, or ensure compliance with international and industry standards.

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Characterization of mechanical properties using tension/compression testing is often done before and after environmental testing to determine changes in material properties.  For example, fabric used outdoors for items such as canopies, pool covers, or umbrellas may be tested for tear and break strength before and after a UV exposure test to ensure that they can withstand weathering exposure without compromising strength.  An electrical enclosure material that is going to be used in a hot manufacturing environment might be exposed to a thermal/humidity cycle with strength performance testing evaluated at intervals to determine how the material will degrade over time. 

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Click here to learn more about the exposure testing offered by Assured Testing Services.

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