Shanghai Jingqi Microcomputer Controlled Electronic Testing Machine WH-8000, Shanghai Jingqi Instrument Co., Ltd. (CAT#: STEM-GLE-2096-YJL)

Highlights

Function
a) Automatic zero reset: The computer will automatically reset the measurement system when it receives the command to start the test;
b) Automatic car return: After the automatic identification test breaks, the movable beam automatically returns to the initial position at high speed;

Cat Number: STEM-GLE-2096-YJL

Application: Testable items<br />(1) Ordinary test items: (ordinary display value and calculation value)<br />●tensile stress<br />●tensile strength<br />●Tear strength<br />●Elongation at break<br />●Elongation stress<br />●Constant stress elongation<br />●Constant stress value<br />●Tear strength<br />●Arbitrary force value<br />●Elongation at any point<br />●Extraction force<br />●Adhesive force and peak calculation value<br />●Pressure test<br />●Shear Peel Test<br />●Bend test<br />●Puncture test of pull-out force<br />(2) Special test items:<br />1. The coefficient of elasticity is the Young's modulus of elasticity<br />Definition: The ratio of the normal stress component in phase to the normal strain. It is a coefficient for determining the rigidity of a material. The higher the value, the stronger the material.<br />2. Proportional limit: The load can maintain a proportional relationship with the elongation within a certain range, and the maximum stress is the proportional limit.<br />3. Elastic limit: the maximum stress that a material can withstand without permanent deformation.<br />4. Elastic deformation: After removing the load, the deformation of the material disappears completely.<br />5. Permanent deformation: After removing the load, the material still remains deformed.<br />6. Yield point: When the material is stretched, the deformation increases rapidly but the stress remains unchanged. This point is the yield point. The yield point is divided into upper and lower yield points, and generally the above yield point is used as the yield point.<br />Yield: When the load exceeds the proportional limit and the elongation is no longer proportional, the load will drop suddenly, and then within a period of time, it will fluctuate up and down, and the elongation will change greatly. This phenomenon is called yielding.<br />7. Yield strength: when stretched, the load at which the permanent elongation reaches a certain value is divided by the original cross-sectional area of the parallel part, and the quotient obtained.<br />8. Spring K value: the ratio of the force component in the same phase as the deformation to the deformation.<br />9. Effective elasticity and hysteresis loss:<br />In the servo-controlled material testing machine, when the sample is stretched to a certain elongation or stretched to a specified load at a certain speed, the percentage of the ratio of the work recovered during contraction and the work consumed during expansion is determined, which is the effective elasticity. The ratio of the energy lost during the elongation and contraction of the sample to the work consumed during the elongation is measured in hundreds, that is, the hysteresis loss.

Model: WH-8000