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Start Over Author "Lepore, Marcello Antonio" Topic crack propagation
2 results on '"Lepore, Marcello Antonio"'

1. A computational strategy for damage‐tolerant design of hollow shafts under mixed‐mode loading condition.

Author

Lepore, Marcello Antonio, Yarullin, Rustam, Maligno, Angelo Rosario, and Sepe, Raffaele

Subjects
*FINITE element method, *CRACK propagation (Fracture mechanics), *FATIGUE cracks, *AXIAL loads, *FATIGUE crack growth, *FAULT tolerance (Engineering), *FRACTURE mechanics
Abstract

Three‐dimensional numerical analyses, using the finite element method (FEM), have been adopted to simulate fatigue crack propagation in a hollow cylindrical specimen, under pure axial or combined axial‐torsion loading conditions. Specimens, made of Al alloys B95AT and D16T, have been experimentally tested under pure axial load and combined in‐phase constant amplitude axial and torsional loadings. The stress intensity factors (SIFs) have been calculated, according to the J‐integral approach, along the front of a part through crack, initiated in correspondence of the outer surface of a hollow cylindrical specimen. The crack path is evaluated by using the maximum energy release rate (MERR) criterion, whereas the Paris law is used to calculate crack growth rates. A numerical and experimental comparison of the results is presented, showing a good agreement in terms of crack growth rates and paths. [ABSTRACT FROM AUTHOR]

Published
2019
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2. A computational strategy for damage-tolerant design of hollow shafts under mixed-mode loading condition

Author

Raffaele Sepe, Rustam Yarullin, Marcello Antonio Lepore, Angelo Maligno, Lepore, Marcello Antonio, Yarullin, Rustam, Maligno, Angelo Rosario, and Sepe, Raffaele

Subjects
Materials science, business.industry, Mechanical Engineering, crack propagation, finite element method, mixed-mode fracture, multiaxial fatigue, Materials Science (all), Mechanics of Materials, 0211 other engineering and technologies, 02 engineering and technology, Structural engineering, Mixed mode, 020303 mechanical engineering & transports, 0203 mechanical engineering, General Materials Science, Mechanics of Material, business, 021101 geological & geomatics engineering
Abstract

Three-dimensional numerical analyses, using the finite element method (FEM), have been adopted to simulate fatigue crack propagation in a hollow cylindrical specimen, under pure axial or combined axial-torsion loading conditions. Specimens, made of Al alloys B95AT and D16T, have been experimentally tested under pure axial load and combined in-phase constant amplitude axial and torsional loadings. The stress intensity factors (SIFs) have been calculated, according to the J-integral approach, along the front of a part through crack, initiated in correspondence of the outer surface of a hollow cylindrical specimen. The crack path is evaluated by using the maximum energy release rate (MERR) criterion, whereas the Paris law is used to calculate crack growth rates. A numerical and experimental comparison of the results is presented, showing a good agreement in terms of crack growth rates and paths.

Published
2019

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