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Characterization and optimization of dispersed composite laminates for damage resistant aeronautical structures

The main objective of the thesis is to assess the damage resistance and damage tolerance of the non-conventional dispersed laminates and compare the response with the conventional ones. However, part of the effort is spent on understanding the delamination behavior in multidirectional laminates. In the first part of the thesis, the delamination in multidirectional laminates is studied. The objective is to design a proper stacking sequence, capable of avoiding intralaminar damage (crack jumping), to enable the fracture toughness characterization under pure mode I. The result of this study shows that the higher the crack arm bending stiffness, the lower the tendency to crack jumping. This phenomenon is also studied experimentally and the same conclusion is drawn.

The main objective of the thesis is to assess the damage resistance and damage tolerance of the non-conventional dispersed laminates and compare the response with the conventional ones. However, part of the effort is spent on understanding the delamination behavior in multidirectional laminates. In the first part of the thesis, the delamination in multidirectional laminates is studied. The objective is to design a proper stacking sequence, capable of avoiding intralaminar damage (crack jumping), to enable the fracture toughness characterization under pure mode I. The result of this study shows that the higher the crack arm bending stiffness, the lower the tendency to crack jumping. This phenomenon is also studied experimentally and the same conclusion is drawn.

Universitat de Girona

Manager: Blanco Villaverde, Norbert
Lopes, Cláudio Saúl
Other contributions: Universitat de Girona. Departament d’Enginyeria Mecànica i de la Construcció Industrial
Author: Sebaey Abdella, Tamer Ali Abdella
Abstract: The main objective of the thesis is to assess the damage resistance and damage tolerance of the non-conventional dispersed laminates and compare the response with the conventional ones. However, part of the effort is spent on understanding the delamination behavior in multidirectional laminates. In the first part of the thesis, the delamination in multidirectional laminates is studied. The objective is to design a proper stacking sequence, capable of avoiding intralaminar damage (crack jumping), to enable the fracture toughness characterization under pure mode I. The result of this study shows that the higher the crack arm bending stiffness, the lower the tendency to crack jumping. This phenomenon is also studied experimentally and the same conclusion is drawn.
The main objective of the thesis is to assess the damage resistance and damage tolerance of the non-conventional dispersed laminates and compare the response with the conventional ones. However, part of the effort is spent on understanding the delamination behavior in multidirectional laminates. In the first part of the thesis, the delamination in multidirectional laminates is studied. The objective is to design a proper stacking sequence, capable of avoiding intralaminar damage (crack jumping), to enable the fracture toughness characterization under pure mode I. The result of this study shows that the higher the crack arm bending stiffness, the lower the tendency to crack jumping. This phenomenon is also studied experimentally and the same conclusion is drawn.
Document access: http://hdl.handle.net/2072/294568
Language: eng
Publisher: Universitat de Girona
Rights URI: http://creativecommons.org/licenses/by/3.0/es/
Subject: Tesis i dissertacions acadèmiques
Resistència al dany
Damage resistance
Resistencia al daño
Tolerància al dany
Damage tolerance
Tolerancia al daño
Laminats no-convencionals dispersos
Non-conventional dispersed laminates
Non-conventional CFRP
Delaminació
Delamination
Delaminación
Dany intralaminar
Intralaminar damage
Daño intralaminar
62 - Enginyeria. Tecnologia
621 - Enginyeria mecànica en general. Tecnologia nuclear. Electrotècnia. Maquinària
Title: Characterization and optimization of dispersed composite laminates for damage resistant aeronautical structures
Type: info:eu-repo/semantics/doctoralThesis
Repository: Recercat

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