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Bend Testing Services
A simple uniaxial test or compression test does not always provide adequate information. Instead, when a sample is tested against bends and flexes, it experiences an intricate amalgamation of forces like tension, shear, and compression. The testing equipment simulates a loading condition that is similar to real-life. Our engineers rely on this test to study the material’s behavior and accordingly, look for alternatives to resolve the shortcomings in consistency which get highlighted through the test.
To perform bend testing, the primary requirement is the correct equipment. The bend test has two convex sides and a concave top. So, when the specimen is placed in between the equipment, the convex side produces tensile stress and the concave top compresses the material. In this process, an area of shear stress is created along the midline. Initially, the shear stress is controlled by managing the span to depth ratio. This step helps in ensuring that if there are any primary faults from the tensile or compress stress, they can be identified easily. In most cases, a defect over 3mm in length is the threshold value for rejection of the specimen for further use.