Compression Fixtures
Compression Jigs and Fixtures are the most varied type of grip. Universal Grip has an extensive offering of compression, bend, puncture, and shear fixtures as well as food testing fixtures for texture profile analysis. These fixtures attach onto a Universal Testing Machine using a clevis style adapter and locking pin.
Bend Testing Fixtures
Overview: Flexural properties are analyzed by testing a material using a 3 or 4 point bend fixture. These jigs have 2 bottom support spans and one or two loading nose points on top. Most three point flex tests such as ASTM D790 require that the third loading point be centered on the sample. 4 point tests such as C1609 require that the 2 top loading points bisect the sample into thirds or fourths. Other tests include the guided bend test and the more obscure serpentine fixture for tens...
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Compression Platens
Platens are flat plates or disks used to enact a compressive force on a sample. These fixtures are designed to be used in conjunction with a Universal Testing Machine for compression testing. There are many sizes of platens but only a few types. These compression grips can be either circular or square, can have holes drilled in them, and also could be spherically seated. By using a combination of 1 fixed platen and 1 spherically seated platen, a sample specimen can be self-al...
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Food Testing Fixtures
Texture Profile Analysis is the physical study of foods and consumer goods. The science is used to evaluate how consumers will respond to certain physical properties of food products. Terms such as "Gumminess" and "Fracturability" actually have a mathematical formula associated with them that can be tested for. Typically, a food testing procedure will involve the use of a compression probe which moves down and punctures the sample. A force curve that measures position ...
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Puncture Fixtures
Overview of Puncture Fixtures Puncture fixtures are precision testing tools designed to evaluate the resistance of materials to puncture or penetration. These fixtures typically utilize a sharp or blunt piercing implement, such as a plunger, needle, or ball, to burst through a sample specimen under controlled conditions. While commonly used with flexible materials like fabrics, puncture fixtures are versatile and can accommodate a wide range of materials, including packaging plastics, films, co...
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Shear Testing Fixtures
Overview Shear Fixtures are used to create shear stress on a sample in order to induce a rupture. Most shear fixtures are specially designed for specific testing procedures. Rigid materials are tested to failure in the shear mode when the layers of material are laterally shifted in relation to each other. UGC carries one of the largest collections of ASTM specific shear grips and fixtures. Types of Composite Materials Shear Testing is most commonly performed on polymer composites used in the ...
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