Fracture parameters determination at yield point and fracture initiation in instrumented impact testing
✍ Scribed by E. Martin; T. Macke; J.M. Quenisset
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 975 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0013-7944
No coin nor oath required. For personal study only.
✦ Synopsis
A method of fracture parameters determination at yield point and fracture initiation is derived from theoretical analysis of bending load-time response of materials during CHARPY impact testing. It allows to overcome the difficulties due to inertial effect and specimen vibrations. Furthermore, the method enables to determine the time at which fracture initiates, that is when the specimen crack begins to extend. The procedure has been applied to various model materials such as steel, aluminum alloy, PMMA and soda-lime glass in order to specify the fracture parameters which can be carried out by the method. Depending on the type of materials K,d and J,,, can be determined.