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Ductile Fracture Behavior of Notched Aluminum Alloy Specimens under Complex Non-Proportional Load

Faculty of Mechanical Engineering, Bialystok University of Technology, 15-351 Bialystok, Wiejska 45C, Poland
Materials 2019, 12(10), 1598; https://doi.org/10.3390/ma12101598
Received: 5 April 2019 / Revised: 28 April 2019 / Accepted: 15 May 2019 / Published: 15 May 2019
(This article belongs to the Section Materials Physics)
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Abstract

The paper presents an experimental investigation of the ductile fracture of specimens with different circumferential notches. Specimens made from ENAW_2024-T351 aluminum alloy were subjected to non-proportional tension–torsion loading. The tests were carried out on an MTS testing machine coupled with the ARAMIS 3D 4M vision measuring system, enabling simultaneous non-contact tracking of the elongation and torsional angle of the measurement base. Depending on the assumed notch radius and the non-proportionate load scheme, the critical tensile force and torsional moments that caused the fracture initiation of the specimen were determined. A significant effect of load configurations and notch radius on the shape of the fracture surface as well as the fracture mechanisms causing the failure of specimens was demonstrated. The equation describing the configuration of critical loads for specimens with different notch radii was applied. View Full-Text
Keywords: ductile fracture; complex load; non-proportional load; specimen with notches; biaxial loading; aluminum alloy ductile fracture; complex load; non-proportional load; specimen with notches; biaxial loading; aluminum alloy
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Derpeński, Ł. Ductile Fracture Behavior of Notched Aluminum Alloy Specimens under Complex Non-Proportional Load. Materials 2019, 12, 1598.

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