Searched for: author%3A%22Amaral%2C+L.%22
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document
Daneshjoo, Z. (author), Amaral, L. (author), Alderliesten, R.C. (author), Shokrieh, M. M. (author), Fakoor, M. (author)
This paper demonstrates how the critical strain energy density in the delamination tip vicinity may be used to explain the physics of delamination growth under mixed mode I/II. A theory previously proposed to physically relate mode I and mode II delamination growth is further extended towards describing the onset of mixed mode I/II...
journal article 2019
document
Amaral, L. (author)
In a context of many studies addressing delamination growth in laminated composites, this thesis provides understanding of the underlying physics of this phenomenon. The models currently used to assess delamination growth are phenomenological in nature and rely almost solely on curve fittings and experimental data. These empirical models are...
doctoral thesis 2018
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Amaral, L. (author), Alderliesten, R.C. (author), Benedictus, R. (author)
In an attempt to understand quasi-static delamination growth under mixed mode loading conditions from a physics-based perspective, this work first evaluated cracking in isotropic materials. The critical Strain Energy Density (SED) approach is adopted, because physically the onset of crack growth is expected to occur when the energy available...
journal article 2018
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Amaral, L. (author), Alderliesten, R.C. (author), Benedictus, R. (author)
Due to the lack of fundamental knowledge of the physics behind delamination growth, certification authorities currently require that composite structures in aircraft are designed such that any delamination will not grow. This usually leads to an overdesign of the structure, hampering weight reductions. In real structures, delaminations tend...
journal article 2017
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Amaral, L. (author), Yao, L. (author), Alderliesten, R.C. (author), Benedictus, R. (author)
This work proposes to treat quasi-static mode I delamination growth of CFRP as a low-cycle fatigue process. To this end, mode I quasi-static and fatigue delamination tests were performed. An average physical Strain Energy Release Rate (SERR), derived from an energy balance, is used to characterize the energy released in crack extension. The...
conference paper 2015
Searched for: author%3A%22Amaral%2C+L.%22
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