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Mechanical property test

 

Hardness Test Tensile Test
Impact Toughness High Temperature Mechanical Properties
Fatigue Failure Wear Resistance
Fracture Toughness Bend Test and Compressive Test

 

Mechanical property Introduction:

The Mechanical property of the material refers to a material which exhibited mechanical characteristics in different environments (temperature, medium, humidity) and under various external loads (tension, compression, bending, torsion, shock, alternating stress, etc.).

 

Meaning of the test and range of application

Mechanical performance experiment could be used at any stage of production. From measuring  the quality of original material to verifying the durability of manufactured goods. This test could be applied to various material and production. Including cosmetic, toilet articles, sports goods, household articles, packaging, toy, automotive interior and so on. In order to get competitive advantage, enterprise could though mechanical performance experiment proved that the durability , stability and safety of their products to the customers.

 

main category specific item test meaning
Hardness test Rockwell hardness, Vickers hardness, Micro Vickers hardness, Brinell hardness, Shore hardness, nano-indentation hardness, Shore hardness. Hardness refers to the characteristics of the solid material to resist permanent deformation.The local resistance ability of solid to the external objects is the index to compare the hard and soft materials of various materials.
Tensile test tensile strength, yield strength, percentage elongation after fracture, percentage reduction of area, elasticity modulus, Poisson's ratio, tensile strain, hardening exponent, strain hardening. Tensile test can determine a series of strength index and plasticity index. Strength usually refers to the ability of the material to resist elastic deformation, plastic deformation and fracture under the action of external force. Plasticity refers to the ability of metal to produce plastic deformation without damage under the action of load, commonly used plastic index is the extension rate and section shrinkage.
Impact toughness test impact strength, impact toughness, low temperature brittleness, Charpy Impact, Izod Impact The material's ability to resist impact load, the practical significance of impact toughness index is to reveal the brittle tendency of material.
High temperature Mechanical property high temperature creep, rupture strength, stress relaxation, high-temperature short-time tensile test High temperature Mechanical property is refers to the parts under high temperature due to resist external force produce various kinds of ability of deformation and stress, such as strength, elasticity and plasticity. Under high temperature, the properties, quantity and distribution of liquid phase are greatly influenced by the appearance of liquid phase.
Bend test bending strength / bending modulus /compressive strength /compressive yield point /compressive modulus of elasticity Bend test mainly used for measuring the bending strength of the brittleness and low plastic material (such as cast iron、high-carbon steel、tool steel ),and reflect the deflection of the plastic indications . Bend test also can be used to inspect the surface quality of the material. The largest compression load divided by the specimen cross-sectional area when the sample is destroyed is known as compressive strength limit or compressive strength. Compression test is mainly applied to brittleness material, such as cast iron, bearing alloy and building materials. For plastic material, in addition to compressive strength limit, the modulus of elasticity, proportional limits and yield strength are measurable.
Fatigue test symmetrical cyclic fatigue stress non-symmetrical cyclic fatigue stress strain fatigue (low cycle fatigue) fatigue crack propagation rate thermal fatigue test corrosion fatigue test contact fatigue test fatigue test at high temperature fatigue test at low temperature Fatigue test is one of the structural test. It can be used to research the fatigue and fracture property of the aircraft structures. Fatigue failure is the main form of early failure of the mechanical parts, the main purpose of fatigue study is precisely estimate the fatigue life of the material structure parts to ensure fatigue failure would not occur during the service period.
Wear resistance adhesive wear abrasive wear contact wear fretting wear It is a test that under the certain friction conditions to measure the coefficient of friction and wear volume . It is a material test for measuring the ability of material to resist wear. This test can be used to compare the wear resistance of the material.
Fracture toughness fracture toughness crack opening displacement dynamic fracture toughness determine the ability of component with crack to resist unstable crack extension.


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