SHEAR LIPS ON FATIGUE FRACTURES OF ALUMINIUM ALLOY SHEETS SUBJECTED TO BIAXIAL CYCLIC LOADS AT VARIOUS R-RATIOS
| Autor: | A. A. Shanyavsky, M. Z. Koronov |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
Materials science
Mechanical Engineering Fatigue fractures Fatigue testing Sheet material Critical value Shear modulus stomatognathic diseases stomatognathic system Shear (geology) Mechanics of Materials visual_art Critical resolved shear stress Aluminium alloy visual_art.visual_art_medium General Materials Science Composite material |
| Zdroj: | Fatigue & Fracture of Engineering Materials and Structures. 17:1003-1013 |
| ISSN: | 1460-2695 8756-758X |
| Popis: | An analysis is made of shear lip measurements as observed on fatigue crack surfaces of an aluminium alloy sheet material. It is shown that, for biaxial cyclic loads at stress ratios 1 and various R-ratios, shear lips were controlled by an equivalent intensity factor Ke=K1F(λ,R). For crack growth in air the shear lip width ts was approximately proportional to K2e at ts t*s where t*s is the critical value of the shear lip dimension. The initiation of shear lips and the orientation of crack growth for different parameters of the loading cycle are briefly considered in the discussion. |
| Databáze: | OpenAIRE |
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