Tape Pull Test
The commonly used instrument is a tensile tester, which is mainly to slowly apply a load to both ends of the sample, so that the working part of the sample is partially subjected to axial tension, causing the sample to elongate in the axial direction. It is generally carried out until it is pulled off. The tensile strength and plastic properties of the material can be determined through the tensile test. Tensile test specimens should meet the relevant national and industrial standards for tensile testing of different materials.
Tensile test curve Stress-strain tensile curve.
The tensile curve can be divided into four stages: 1. The PP value corresponding to point a in the elastic deformation stage of 10ab is called the proportional limit load. The Pe value corresponding to point b is called the elastic limit load (the maximum resistance without permanent deformation). The L in the 0a segment is proportional to the extremely small plastic deformation in the ab segment in the p line stage (0.001-0.005%)
Hardness test is an agile and economical mechanical test method. It is one of the most widely used methods for measuring the mechanical properties of materials. It is the only test that does not damage the mechanical properties of the specimen. There are also change test, fatigue test, creep test, relaxation test and durability test in product testing.
The compression test, on the contrary to the tensile test, is used to measure the relative shortening rate and section increase rate of the material under static effect. The fundamental requirement for the compression pattern is that the two supporting end faces should be parallel to each other. The bending test is mainly used to determine the bending strength limit, elastic modulus and maximum deflection of materials or components. It can be divided into simply supported beam bending test and pure bending test.
The shear test is mainly used to determine the shear resistance of the material, and is generally used to evaluate the quality of the rivet wire. The shear test is divided into a single shear test and a bidirectional shear test, and the instrument is an all-around material.