Osteogenesis imperfecta (OI) is a genetic disease of collagen or collagen-related proteins that adversely impacts bone mass and fracture resistance. Little is known regarding the role that microdamage plays in OI and whether or not OI bone is more prone to damage accumulation than bone with unaffected collagen. The Brtl/+ mouse is a heterozygous model for OI which contains a Gly349Cys substitut...

In the framework of Cost Action CERTBOND (Reliable roadmap for certification bonded primary structures), a wide group researchers from 27 European Countries have had opportunity to work on topic joints structural applications different engineering sectors such as aerospace, automotive, civil engineering, wind energy and marine sectors. Since virtual testing optimization are basic tools in proce...

In this paper, we present a phase-field model of quasi-brittle fracture with pressurized cracks, dedicated applications for polycrystalline materials. The is formulated as minimization problem within the variational framework. external work done by pressure on crack surfaces included in objective function. Several careful modeling choices lead to regularization-length-independent critical stren...

This research presents the numerical evaluation of fatigue crack growth structural steels S355 and S960 based on Paris’ law parameters (C m) that are experimentally determined with a single edge notched tension (SENT) specimen using optical gauge measurements an electromotive resonance machine at constant amplitude load. The sustainable technique is replacing destructive, time-consuming expensi...

Cracking is a major distress in asphalt pavement which can lead to premature pavement failures and can cost agencies millions of dollars in maintenance and rehabilitation costs. Even with modern advances in pavement engineering, attempts to quantify and model cracking in asphalt pavements have proved extremely challenging; this is due to the visco-elastic behavior of asphalt concrete and the co...

Cracking is a major distress in asphalt pavement which can lead to premature pavement failures and can cost agencies millions of dollars in maintenance and rehabilitation costs. Even with modern advances in pavement engineering, attempts to quantify and model cracking in asphalt pavements have proved extremely challenging; this is due to the visco-elastic behavior of asphalt concrete and the co...

in this study, displacement field around v-notches of a poly methyl metha crylate (pmma) specimen with tip cracks will be analyzed using digital image correlation technique. first intensity factor in combination with in-plane rigid body translations and rotation components will be determined by linear least squares fitting of the displacement field data to the corresponding relations among stre...

This thesis proposes a quantitative method to optimize inspection/repair intervention in rail defect management. Rail defect management is important for track maintenance, since rails are the most significant and basic component of the track systems. Rail inspection is a fundamental intervention to prevent rail failure. Railroads have evolved the rail inspection interval based on their empirica...

The finite element method (FEM) is a widely used technique in research, including but not restricted to the growth of cracks engineering applications. However, failure use fine meshes poses problems modeling singular stress field around crack tip region. This work aims at using original source code program by Visual FORTRAN language predict propagation and fatigue lifetime adaptive dens mesh me...