Static crack extension prediction in aluminium alloy at low temperature |
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| Authors: | Andrea Carpinteri Roberto Brighenti Sabrina Vantadori Danilo Viappiani |
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| Affiliation: | 1. DrillScan, 26 rue Emile Decorps, 69100 Villeurbanne, France;2. R&D Center, Duy Tan University, Da Nang, Viet Nam;1. Gdańsk University of Technology, Faculty of Ocean Engineering and Ship Technology, Department of Theory and Ship Design, Poland;2. Gdańsk University of Technology, Faculty of Civil and Environmental Engineering, Department of Structural Mechanics, G. Narutowicza 11/12, 13, 80-233 Gdańsk, Poland;1. Institute of Materials Engineering, Technische Universität Bergakademie Freiberg, Gustav-Zeuner-Str. 5, 09599 Freiberg, Germany;2. Institute of Mechanics and Fluid Dynamics, Technische Universität Bergakademie Freiberg, Lampadiusstraße 4, 09599 Freiberg, Germany;1. Department of Electrical Engineering, PIEAS, Islamabad, Pakistan;2. Institute of Automatic Control and Complex Systems, University of Duisburg-Essen, 47057-Duisburg, Germany;1. Electrical and Computer Engineering Department, University of Louisville, Louisville, KY 40208, USA;2. Bioengineering Department, University of Louisville, Louisville, KY 40208, USA |
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| Abstract: | The evaluation of the crack initiation and crack extension under different environmental conditions is very important for many engineering applications. Several crack extension criteria have been proposed in the last decades, but each criterion can be employed only for particular materials, loading configurations, environmental conditions. In the present paper, the R-criterion (minimum extension of the core plastic zone) is modified in order to take into account the temperature dependence. The modified criterion is herein employed to predict the crack path and the crack extension force for an edge-cracked finite plate under tension, by using a simplified procedure to determine the stress-intensity factor (SIF) for different initial crack configurations. Then, results concerning some experimental tests performed on edge-cracked aluminium alloy sheet specimens at different temperatures are reported. Finally, the theoretical results are compared (in terms of crack extension force and crack path) with the experimental data. |
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