This book presents researches on the fracture mechanics as: A short crack model for fatigue limit of press-fittings in railway axles; A weakest – link analysis for fatigue strength of Components containing defects; Local compliance experiments and crack closure models; Application of new methods to evaluate crack closure in the near-threshold fatigue crack growth regime; Thermo-mechanical analysis of elastic cracks In heterogeneous materials by FEM and VCFEM; Crack propagation in poroelastic fluid-saturated solids at intersonic velocities; Microstructural investigation and thermal shock behaviour of mullite-cordierite refractory materials; Indentation and imprint mapping for inverse analysis of quasi brittle fracture; High reliability ceramic laminates by design; Reliability assessment of a SiC based component for high temperature application; Time-scale effects on acoustic emission due to elastic waves propagation in monitored cracking structures; Hysteretic flexural behaviour of a reinforced concrete beam with a T crosssection; Nanoscale strain localization: the instability of strainions; Structural monitoring and life-time assessment of medieval towers; Size effect in grained materials: extreme value theory approach; Theoretical and numerical investigation on internal instability phenomena in composite materials; Numerical approach and experimental validation of composite soundproofing panels for aeronautical applications; Surveillance system airborne composite radome design; Elastic interaction of delamination in composites; Strain rate dependence of the anisotropic fracture Toughness of rubber modified polypropylene films; Mixed-mode crack growth in toughened PMMA; Applicability of the load separation criterion and the normalization method to high-rate testing of ductile polymers; A nonlinear FE method for the prediction of slabs on grade behaviour; Quantized fracture mechanics and related applications for predicting the strength of defective nanotubes comparative theoretical-experimental evaluation of conrod little-eye stress analysis; A modified relaxation-model for the prediction of residual stresses in twodimensional rolling/sliding contact; The Nondimensional Plasticity Rotational Parameter used in DWT Tests: Evaluation by means of Finite Element; Cracking mechanisms in a Hot-dip zinc coated steel; Cracking mechanisms in a Hot-dip zinc coated steel ferritic and austenitic sintered stainless steels Fatigue crack propagation resistance: hydrogen embrittlement influence; Fracture toughness KIvM measurement of non-brittle metallic materials by “Chevron Notched” specimens; Fatigue crack growth behavior of nitrided and shot peened specimens; Fracture toughness of plastic-mold steels: dependence upon heat treatment and microstructure; Scale-independent constitutive law for concrete in compression; Influence of the intermediate material on the singular stress field in tri-material junctions; On nonlocality and locality: differential and discrete formulations; Fracture response of cracked orthotropic plates; Effect of interaction between collinear cracks on the strength distribution of brittle materials; Stress intensity factors for a subsurface crack in a two dimensional half-space; An implicit gradient stress failure condition.
Atti del 17° Convegno Nazionale Gruppo Italiano Frattura
FRAGASSA, CRISTIANO
2004
Abstract
This book presents researches on the fracture mechanics as: A short crack model for fatigue limit of press-fittings in railway axles; A weakest – link analysis for fatigue strength of Components containing defects; Local compliance experiments and crack closure models; Application of new methods to evaluate crack closure in the near-threshold fatigue crack growth regime; Thermo-mechanical analysis of elastic cracks In heterogeneous materials by FEM and VCFEM; Crack propagation in poroelastic fluid-saturated solids at intersonic velocities; Microstructural investigation and thermal shock behaviour of mullite-cordierite refractory materials; Indentation and imprint mapping for inverse analysis of quasi brittle fracture; High reliability ceramic laminates by design; Reliability assessment of a SiC based component for high temperature application; Time-scale effects on acoustic emission due to elastic waves propagation in monitored cracking structures; Hysteretic flexural behaviour of a reinforced concrete beam with a T crosssection; Nanoscale strain localization: the instability of strainions; Structural monitoring and life-time assessment of medieval towers; Size effect in grained materials: extreme value theory approach; Theoretical and numerical investigation on internal instability phenomena in composite materials; Numerical approach and experimental validation of composite soundproofing panels for aeronautical applications; Surveillance system airborne composite radome design; Elastic interaction of delamination in composites; Strain rate dependence of the anisotropic fracture Toughness of rubber modified polypropylene films; Mixed-mode crack growth in toughened PMMA; Applicability of the load separation criterion and the normalization method to high-rate testing of ductile polymers; A nonlinear FE method for the prediction of slabs on grade behaviour; Quantized fracture mechanics and related applications for predicting the strength of defective nanotubes comparative theoretical-experimental evaluation of conrod little-eye stress analysis; A modified relaxation-model for the prediction of residual stresses in twodimensional rolling/sliding contact; The Nondimensional Plasticity Rotational Parameter used in DWT Tests: Evaluation by means of Finite Element; Cracking mechanisms in a Hot-dip zinc coated steel; Cracking mechanisms in a Hot-dip zinc coated steel ferritic and austenitic sintered stainless steels Fatigue crack propagation resistance: hydrogen embrittlement influence; Fracture toughness KIvM measurement of non-brittle metallic materials by “Chevron Notched” specimens; Fatigue crack growth behavior of nitrided and shot peened specimens; Fracture toughness of plastic-mold steels: dependence upon heat treatment and microstructure; Scale-independent constitutive law for concrete in compression; Influence of the intermediate material on the singular stress field in tri-material junctions; On nonlocality and locality: differential and discrete formulations; Fracture response of cracked orthotropic plates; Effect of interaction between collinear cracks on the strength distribution of brittle materials; Stress intensity factors for a subsurface crack in a two dimensional half-space; An implicit gradient stress failure condition.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
