Emmanuel E. Gdoutos

Bio: Emmanuel E. Gdoutos is an academic researcher from Democritus University of Thrace. The author has contributed to research in topics: Stress intensity factor & Fracture mechanics. The author has an hindex of 30, co-authored 241 publications receiving 3493 citations. Previous affiliations of Emmanuel E. Gdoutos include Northwestern University & Michigan Technological University.

Fracture Mechanics: An Introduction

Abstract: Conversion table Preface to the Second Edition Preface 1: Introduction 1.1. Conventional failure criteria 1.2. Characteristic brittle failures 1.3. Griffith's work 1.4. Fracture mechanics References 2: Linear Elastic Stress Field in Cracked Bodies 2.1. Introduction 2.2. Crack deformation modes and basic concepts 2.3. Westergaard method 2.4. Singular stress and displacement fields 2.5. Stress intensity factor solutions 2.6. Three-dimensional cracks Examples Problems Appendix 2.1 References 3: Elastic-Plastic Stress Field in Cracked Bodies 3.1. Introduction 3.2. Approximate determination of the crack-tip plastic zone 3.3. Irwin's model 3.4. Dugdale's model Examples Problems References 4: Crack Growth Based on Energy Balance 4.1. Introduction 4.2. Energy balance during crack growth 4.3. Griffith theory 4.4. Graphical representation of the energy balance equation 4.5. Equivalence between strain energy release rate and stress intensity factor 4.6. Compliance 4.7. Crack stability Examples Problems References 5: Critical Stress Intensity Factor Fracture Criterion 5.1 . Introduction 5.2. Fracture criterion 5.3. Variation of Kc with thickness 5.4. Experimental determination of K1c 5.5. Crack growth resistance curve (R-curve) method 5.6. Fracture mechanics design methodology Examples Problems Appendix 5.1 References 6: J-Integral and Crack Opening Displacement Fracture Criteria 6.1. Introduction 6.2. Path-independent integrals 6.3. J-integral 6.4. Relationship between the J-integral and potential energy 6.5. J-integral fracture criterion 6.6. Experimental determination of the J-integral 6.7. Stable crack growth studied by the J-integral 6.8. Crack opening displacement (COD)fracture criterion Examples Problems References 7. Strain Energy Density Failure Criterion: Mixed-Mode Crack Growth 7.1. Introduction 7.2. Volume strain energy density 7.3. Basic hypotheses 7.4. Two-dimensional linear elastic crack problems 7.5. Uniaxial extension of an inclined crack 7.6. Ductile fracture 7.7. The stress criterion Examples Problems References 8: Dynamic Fracture 8.1. Introduction 8.2. Mott's model 8.3. Stress field around a rapidly propagating crack 8.4. Strain energy release rate 8.5. Crack branching 8.6. Crack arrest 8.7. Experimental determination of crack velocity and dynamic stress intensity factor Examples Problems References 9: Fatigue and Environment-Assisted Fracture 9.1. Introduction 9.2. Fatigue crack propagation laws 9.3. Fatigue life calculations 9.4. Variable amplitude loading 9.5. Environment-assisted fracture Examples Problems References 10: Micromechanics of Fracture 10.1. Introduction 10.2. Cohesive strength of solids 10.3. Cleavage fracture 10.4. Intergranular fracture 10.5. Ductile fracture 10.6. Crack detection methods References 11: Composite Materials 11.1. Introduction 11.2. Through4hickness cracks 11.3. Interlaminar fracture References 12: Thin Films 12.1. Introduction 12.2. Interfacial failure of a bimaterial system 12.3. Steady-state solutions for cracks in bilayers 12.4. Thin films under tension 12.5. Measurement of interfacial fracture toughness References 13: Nanoindentation 13.1. Introduction 13.2. Nanoindentation for measuring Young's modulus and hardness 13.3. Nanoindentation for measuring fracture toughness 13.4. Nanoindentation for measuring interfacial fracture toughness

Failure Modes of Composite Sandwich Beams

Abstract: The overall performance of sandwich structures depends in general on the properties of the facesheets, the core, the adhesive bonding the core to the skins, as well as geometrical dimensions. Sandwich beams under general bending, shear and in-plane loading display various failure modes. Their initiation, propagation and interaction depend on the constituent material properties, geometry, and type of loading. Failure modes and their initiation can be predicted by conducting a thorough stress analysis and applying appropriate failure criteria in the critical regions of the beam. This analysis is difficult because of the nonlinear and inelastic behavior of the constituent materials and the complex interactions of failure modes. Possible failure modes include tensile or compressive failure of the facesheets, debonding at the core/facesheet interface, indentation failure under localized loading, core failure, wrinkling of the compression facesheet, and global buckling.

Matrix Theory of Photoelasticity

Abstract: 1. Introduction.- 2. Electromagnetic Theory of Light.- 3. Description of Polarized Light.- 4. Passage of Polarized Light Through Optical Elements.- 5. Measurement of Elliptically Polarized Light.- 6. The Photoelastic Phenomenon.- 7. Two-Dimensional Photoelasticity.- 8. Three-Dimensional Photoelasticity.- 9. Scattered-Light Photoelasticity.- 10. Interferometric Photoelasticity.- 11. Holographic Photoelasticity.- 12. The Method of Birefringent Coatings.- 13. Graphical and Numerical Methods in Polarization Optics, Based on the Poincare Sphere and the Jones Calculus.- Author Index.

Fracture Mechanics Criteria and Applications

Abstract: 1. Introductory chapter.- 1.1. Conventional failure criteria.- 1.2. Characteristic brittle failures.- 1.3. Griffith's work.- 1.4. Fracture mechanics.- References.- 2. Linear elastic stress field in cracked bodies.- 2.1. Introduction.- 2.2. Crack deformation modes and basic concepts.- 2.3. Eigenfunction expansion method for a semi-infinite crack.- 2.4. Westergaard method.- 2.5. Singular stress and displacement fields.- 2.6. Method of complex potentials.- 2.7. Numerical methods.- 2.8. Experimental methods.- 2.9. Three-dimensional crack problems.- 2.10. Cracks in bending plates and shells.- References.- 3. Elastic-plastic stress field in cracked bodies.- 3.1. Introduction.- 3.2. Approximate determination of the crack-tip plastic zone.- 3.3. Small-scale yielding solution for antiplane mode.- 3.4. Complete solution for antiplane mode.- 3.5. Irwin's model.- 3.6. Dugdale's model.- 3.7. Singular solution for a work-hardening material.- 3.8. Numerical solutions.- References.- 4. Crack growth based on energy balance.- 4.1. Introduction.- 4.2. Energy balance during crack growth.- 4.3. Griffith theory.- 4.4. Graphical representation of the energy balance equation.- 4.5. Equivalence between strain energy release rate and stress intensity factor.- 4.6. Compliance.- 4.7. Critical stress intensity factor fracture criterion.- 4.8. Experimental determination of KIc.- 4.9. Crack stability.- 4.10. Crack growth resistance curve (R-curve) method.- 4.11. Mixed-mode crack propagation.- References.- 5. J-Integral and crack opening displacement fracture criteria.- 5.1. Introduction.- 5.2. Path-independent integrals.- 5.3. J-integral.- 5.4. Relationship between the J-integral and potential energy.- 5.5. J-integral fracture criterion.- 5.6. Experimental determination of the J-integral.- 5.7. Stable crack growth studied by the J-integral.- 5.8. Mixed-mode crack growth.- 5.9. Crack opening displacement (COD) fracture criterion.- References.- 6. Strain energy density failure criterion.- 6.1. Introduction.- 6.2. Volume strain energy density.- 6.3. Basic hypotheses.- 6.4. Two-dimensional linear elastic crack problems.- 6.5. Uniaxial extension of an inclined crack.- 6.6. Three-dimensional linear elastic crack problems.- 6.7. Bending of cracked plates.- 6.8. Ductile fracture.- 6.9. Failure initiation in bodies without pre-existing cracks.- 6.10. Other criteria based on energy density.- References.- 7. Dynamic fracture.- 7.1. Introduction.- 7.2. Mott's model.- 7.3. Stress field around a rapidly propagating crack.- 7.4. Strain energy release rate.- 7.5. Transient response of cracks to impact loads.- 7.6. Standing plane waves interacting with a crack.- 7.7. Crack branching.- 7.8. Crack arrest.- 7.9. Experimental determination of crack velocity and dynamic stress intensity factor.- References.- 8. Fatigue and environment-assisted fracture.- 8.1. Introduction.- 8.2. Fatigue crack propagation laws.- 8.3. Fatigue life calculations.- 8.4. Variable amplitude loading.- 8.5. Mixed-mode fatigue crack propagation.- 8.6. Nonlinear fatigue analysis based on the strain energy density theory.- 8.7. Environment-assisted fracture.- References.- 9. Engineering applications.- 9.1. Introduction.- 9.2. Fracture mechanics design philosophy.- 9.3. Design example problems.- 9.4. Fiber-reinforced composites.- 9.5. Concrete.- 9.6. Crack detection methods.- References.- Author Index.

Failure Modes in Composite Sandwich Beams

Abstract: A thorough investigation of failure behavior of composite sandwich beams under three-and four-point bending was undertaken. The beams were made of unidirectional carbon/epoxy facings and a PVC closed-cell foam core. The constituent materials were fully characterized and in the case of the foam core, failure envelopes were developed for general two-dimensional states of stress. Various failure modes including facing wrinkling, indentation failure and core failure were observed and compared with analytical predictions. The initiation, propagation and interaction of failure modes depend on the type of loading, constituent material properties and geometrical dimensions.

Experimental trends in polymer nanocomposites—a review

Abstract: A review of the recent work on polymer matrix nanocomposites is presented. This review is not intended to be comprehensive, but provides an overview of the processing techniques and trends in the mechanical behavior and morphology of nanocomposites. A number of composite systems with amorphous and/or crystalline polymer matrices and different nano-sized filler materials are discussed.

A Complete Bibliography of Publications in Isis, 2000{2009

Abstract: accademiche [38]. Ada [45]. Adrian [45]. African [56]. Age [39, 49, 61]. Al [23]. Al-Rawi [23]. Aldous [68]. Alex [15]. Allure [46]. America [60, 66]. American [49, 69, 61, 52]. ancienne [25]. Andreas [28]. Angela [42]. Animals [16]. Ann [26]. Anna [19, 47]. Annotated [46]. Annotations [28]. Anti [37]. Anti-Copernican [37]. Antibiotic [64]. Anxiety [51]. Apocalyptic [61]. Archaeology [26]. Ark [36]. Artisan [32]. Asylum [48]. Atri [54]. Audra [65]. Australia [41]. Authorship [15]. Axelle [29].

A Review of Dynamic Experimental Techniques and Mechanical Behaviour of Rock Materials

Abstract: The purpose of this review is to discuss the development and the state of the art in dynamic testing techniques and dynamic mechanical behaviour of rock materials. The review begins by briefly introducing the history of rock dynamics and explaining the significance of studying these issues. Loading techniques commonly used for both intermediate and high strain rate tests and measurement techniques for dynamic stress and deformation are critically assessed in Sects. 2 and 3. In Sect. 4, methods of dynamic testing and estimation to obtain stress–strain curves at high strain rate are summarized, followed by an in-depth description of various dynamic mechanical properties (e.g. uniaxial and triaxial compressive strength, tensile strength, shear strength and fracture toughness) and corresponding fracture behaviour. Some influencing rock structural features (i.e. microstructure, size and shape) and testing conditions (i.e. confining pressure, temperature and water saturation) are considered, ending with some popular semi-empirical rate-dependent equations for the enhancement of dynamic mechanical properties. Section 5 discusses physical mechanisms of strain rate effects. Section 6 describes phenomenological and mechanically based rate-dependent constitutive models established from the knowledge of the stress–strain behaviour and physical mechanisms. Section 7 presents dynamic fracture criteria for quasi-brittle materials. Finally, a brief summary and some aspects of prospective research are presented.