A specimen for a constant stress intensity factor
| Autor: | J. Schuve, A.U. De Koning |
|---|---|
| Rok vydání: | 1977 |
| Předmět: |
Materials science
business.industry Mechanical Engineering Structural engineering Large range Sheet material Mechanics of Materials Constant stress Range (statistics) General Materials Science Composite material business Intensity factor Constant (mathematics) Stress intensity factor Analytic function |
| Zdroj: | Engineering Fracture Mechanics. 9:331-340 |
| ISSN: | 0013-7944 |
| DOI: | 10.1016/0013-7944(77)90026-1 |
| Popis: | The purpose of the present investigation was to design a simple specimen for which the stress intensity factor ( K ) is constant for a substantial range of the crack length. Moreover the crack growth direction should be stable without the necessity of side grooves. The geometry adopted was a rectangular specimen with a central crack loaded by two pins. Values of K were determined in three ways: 1. (1) calculations based on an analytical function in the literature, 2. (2) calculations with the finite-element method and 3. (3) empirical determination based on observed crack growth rates. The agreement between the latter two methods was good, whereas the first method yielded deviating results. By a judicious choice of the width, the height and the locations of the holes for the two pins an approximately constant K- value for a large range of the crack length could be obtained. The tests were carried out on 7075-T6 sheet material. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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