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Charpy impact test

Charpy impact test

A method for evaluating the impact value when striking the back of the notch section with a hammer while supporting both ends of the test specimen.

Impact testing is a test that measures the resistance of a material when subjected to a high-speed load. There are several types of impact tests, including the pendulum-type Izod impact test, Charpy impact test, tensile impact test, and drop-weight impact tests such as the DuPont impact test and dart impact test. The Izod and Charpy impact tests typically involve notching the test specimen. By notching, stress is concentrated, which means the results are influenced by the notch shape and the method of notch fabrication.

  • Impact Test

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[Structural Analysis Example] Fracture Analysis of Charpy Test Using SAMP-1

[Structural Analysis Example] Fracture Analysis of Charpy Test Using SAMP-1

The material is polycarbonate! It is important to set the fracture strain considering the strain rate dependence!

We would like to introduce a case study analyzing the fracture of the notched Charpy test (JIS K7111-1/1eA). A total of 10 tests were conducted, resulting in 9 hinge fractures, with a Charpy impact strength of 77 (kJ/m³). From the results of the impact strength and the behavior of the fractures, it can be said that in order to analyze the notched Charpy impact test, it is important to establish not only the "stress-strain" relationship considering strain rate dependence but also the fracture strain considering strain rate dependence. 【Case Overview】 ■ Material: Polycarbonate ■ Material Model: Resin Material Constitutive Law SAMP-1 ■ High-speed tensile tests were conducted to determine the following (1) and (2): ・(1) "Stress-Strain" relationship considering strain rate dependence ・(2) Fracture strain considering strain rate dependence *For more details, please refer to the related links or feel free to contact us.

  • Structural Analysis

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