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    Company:Dongguan OTS.Jun yuan Machinery Equipment Co.,Ltd

    Tel:+86 0769-22247855

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    Application of testing machine in construction industry

    company  2016-03-24

    Brief description
    Application of the construction industry test machine, mainly for metal pipe, plastic pipe, floor tiles, concrete strength test.
    detailed information
    Application of testing machine in construction industry
    Application of the construction industry test machine, mainly for metal pipe, plastic pipe, floor tiles, concrete strength test.
    First, the concept of strength
    Refers to the material under the action of external force (load), the ability to resist damage.
    Two, the type of strength
    According to the force form (as shown in Figure) is divided into compressive strength, tensile strength, flexural strength, shear strength, such as 4 kinds of.
    Three, the strength of the calculation
    The formula for calculating the compressive strength, tensile strength and shear strength
    F = A F/
    Type of f --- the compressive strength, tensile strength, shear strength (MPa Pa).
    F --- maximum load (N) when the specimen is destroyed.
    A --- specimen area (m2 or mm2).
    The bending (bending) strength of the material is related to the stress of the material, the shape of the cross section and the supporting condition. In the case of rectangular cross section, in the middle of a concentrated load, the bending (bending) strength of the:f = 3 B / 2 H2
    Four, strength grade
    For ease of use, a number of grades are divided according to the strength value of the material. The main compressive strength of brittle materials, such as cement, concrete, brick, plastic materials and ductile materials, such as tensile strength, such as steel and so on.
    Five, than strength
    Strength refers to the ratio of the material strength and volume density (F / 0). Is an important index to measure the light and high strength properties of materials.
    Six, deformation properties
    1, flexibility: the material is fully capable of recovery of deformation called elastic deformation. The material with the characteristic of this kind of deformation is called elastic material.
    2, plastic: the material can not be restored to the deformation is called plastic deformation. Plastic is called a plastic material.
    3, brittleness: material under the load, there is no obvious omen, the performance of the nature of the sudden destruction.
    4, toughness: toughness, also known as impact toughness, is the material under the impact, vibration load, can withstand a lot of deformation and does not occur sudden destruction of the nature.