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Khosravani, Mohammad Reza: Experimental investigations on the dynamic behavior and fracture of composite materials. 2018
Inhalt
Acknowledgement
Abstract
Zusammenfassung
Contents
List of Figures
List of Tables
1. Introduction
1.1. Research background
1.2. Objectives and scope of the research
1.3. Outline of the present work
1.4. Publications of this dissertation
2. Composites: historical background,classification and applications
2.1. Definition and history of composite materials
2.1.1. Classification of composite materials
2.1.2. Sandwich-structured composites
2.1.3. Aerospace applications of sandwich composites
2.2. Introduction to cementitious composites
2.2.1. Historical background of concrete
2.2.2. Ultra-high performance concrete (UHPC)
3. Preparation of composite specimensand mechanical properties
3.1. Sandwich composite T-joints
3.1.1. Honeycomb material and mechanical properties
3.1.2. Face sheet materials and mechanical properties
3.1.3. Two component polyurethane adhesive
3.1.4. Sandwich T-joint specimens preparation
3.1.5. Sandwich specimens under accelerated ageing conditions
3.1.6. Mechanical properties of sandwich composites
3.2. Ultra-high performance concrete materials
3.2.1. UHPC specimens preparation
3.2.2. Mechanical properties of UHPC materials
4. Aritificial intelligence in fracturemechanics
4.1. Concept of artificial intelligence approaches
4.2. Fracture mechanics in different sub-domains
4.3. Applications of AI on sub-domains of fracturemechanics
4.3.1. Applications of Bayesian network
4.3.2. Applications of Artificial neural network
4.3.3. Applications of Genetic Algorithm
4.3.4. Applications of Fuzzy logic
4.3.5. Applications of Case-based reasoning
4.3.6. Hybrid intelligent techniques
4.4. Discussion and future of AI in fracture mechanics
4.4.1. Limitations and suggestions
4.4.2. Applications of intelligent system in studied composites
5. Experiments, results and analysis
5.1. Characterization of sandwich composite T-joints
5.1.1. Experiments under quasi-static loading conditions
5.1.2. Experiments under dynamic loading conditions
5.1.3. DIC, crack propagation and fractographic analysis
5.2. Behavior of UHPC materials under dynamic loadingconditions
5.2.1. Spalling tests on UHPC via split Hopkinson bar
5.2.2. Fracture studies of UHPC by dynamic Brazilian tests
5.2.3. Microscopic inspections
6. Numerical simulations and analysis
6.1. Finite element modeling of the sandwich T-joints
6.2. Numerical analysis of UHPC specimens underdynamic loadings
7. Conclusions and future works
7.1. Conclusions
7.2. Future works
Bibliography
Appendix