Popular science and introduction about shock test

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Popular science and introduction about shock test

Views:130
Author:Site Editor
Publish Time: 2021-06-28
Origin:Site
The shock test is to make a sample of the shape and size of the material to be tested, break it once on the impact machine, and use the work consumed by the impact sample and the fracture topography characteristics to obtain the defined impact performance index after finishing. For example, impact toughness, impact absorption energy, and the contour of the fiber fracture fracture.

The performance index obtained in the shock test has no clear physical meaning. The performance data obtained is used to evaluate the measured performance or directly design and calculate; but the impact is simple and convenient, and it is the easiest material dynamic test method. The impact has used a large number of thermal shock tests. Impact test data and experience with evaluation data. . Therefore, this test method can be widely used in product quality inspection, product design and scientific research.

Since the 1960s, the rapid development of the defense of fracture and fracture metals, the value obtained by impact has a deep relationship with the fracture toughness, the impact impact value is used to test the toughness or the direct test method to dynamically update the toughness and stop. Crack toughness; also developed an electronic computer impact testing machine with shock oscilloscope, which displays and records the energy issues of elastic deformation, deformation, texture initiation and state expansion during the impact process of deformation, all of which have important performance and research The significance of the update process.

Value is an energy concept, which contains the contribution of strength and plasticity. Materials with higher strength and lower plasticity can have impact resistance; materials with lower strength that can be destroyed also have possible impact values. In the former case, although the value is impacted, the components cannot be added in the process of adding the low performance machine. Conditionality, and has obvious empirical characteristics.
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