These measures include the material’s limit, proportionality limit, yield strength and ultimate strength. This curve is unique for every material and provides key measures. From this data, along with the cross-sectional area of the test piece, a stress-strain curve can be plotted. Results produced by tensometer instruments provide load as a function of extension. This is the same process that causes poorly produced rivets and metal sheeting to fatigue and fail on aircraft when repeatedly exposed to the stresses of atmospheric pressure. Even the tiniest surface inconsistency can rapidly enlarge and spread under strain, leading to early fractures and metal fatigue. Any defect that is created during the cutting process can skew test results and lead to premature failure under strain. Accurate results from tensometer devices depend upon the quality of the test piece. This is critical for testing metals used in aircraft and submarines, which can experience drastic changes in atmospheric pressure.Ĭhambers are also useful for testing materials that will be exposed to high temperature ranges. This configuration allows for the testing of a material’s strain characteristics under specific temperatures and pressures. Sealed chambers can be used to house a tensometer. Tensometer instruments can create the force through the use of either a screw or a hydraulic ram, which are powered by mechanical or electrical means. These grips are then used to apply a tensile or compression force, called a load, to the test piece. Tensometer devices consist of two grips that hold a section of test material in place. JZHY-180 Manual surface tensometer/tensometer. Tensometer devices are routinely used in the manufacturing industry to ensure that parts meet necessary strength and endurance requirements.Ī wide variety of tensometer options are available to you, such as universal testing machine, textile testing instrument, and tensile testing machine. The amount of stretch that a material has when it is under strain provides important information about the material’s tensile strength and fatigue strength. A tensometer is a device used to determine a material's response to varying strains, called loads.
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