Cement concrete pavements are designed for flexural fatigue loading due to traffic. Due to its numerous advantages high performance cement concrete is finding it’s way in pavement construction. This paper investigates the fatigue strength of High Performance Cement Concretes subjected to flexural loading. Fatigue studies are conducted on these concretes to obtain the fatigue lives at various st...

A study has been made to discern the mechanisms for the delayed failure of 2-μm thick structural films of n+-type, polycrystalline silicon under high-cycle fatigue loading conditions. Such polycrystalline silicon films are used in smallscale structural applications including microelectromechanical systems (MEMS) and are known to display ‘metal-like’ stress-life (S/N) fatigue behavior in room te...

The application of probabilistic methods to the life prediction of fatigue vulnerable structures is becoming increasingly important. In-service inspection and repair/replacement can be an effective strategy for decreasing fatigue failure probability. However, inspection introduces additional random variables that must be considered in an overall lifetime reliability assessment. In this study, a...

Bisphosphonates are commonly prescribed for treatment of osteoporosis. Long-term use of bisphosphonates has been correlated to atypical femoral fractures (AFF). AFFs arise from fatigue damage to bone tissue that cannot be repaired due to pharmacologic treatments. Despite fatigue being the primary damage mechanism of AFFs, the effects of osteoporosis treatments on fatigue properties of cortical ...

Structural systems are often subjected to the risk of fatigue-induced failures caused by repeated loadings during their service lifetime (Byers et al. 1997, Karamchandani et al. 1992). The reliability of such structural systems can be sustained through effective structural maintenance as well as proper structural design. It is thus essential to update the reliability of a structure against fati...

The effect of ferrite grain size on the fatigue and tensile properties of dual phase steels with a 0.25 volume fraction of martensite (Vm) under different heat treatments was investigated. The heat treatments were homogenized at 1200 oC along with several subsequent normalizations at 910 oC, resulting in different microstructures and mechanical properties. After heat treatment, the obtained ste...

Fatigue failure characteristics of friction stir welds in 13mm gauge 2024-T351 plate have been assessed. Failure occurred from either the weld region (nugget/flow arm) or from the material immediately surrounding the weld. Fatigue failure from the surrounding material was essentially conventional, initiating from large S-phase intermetallic particles and growing in a macroscopic mode I manner. ...

Modern electronics products move in the direction of complex, high density, high speed and also thinner and lighter for portability. Reliability of interconnection of electronics packaging has become critical issue. Major functions of electronic packaging are briefly discussed and failure mechanisms of electronic packaging are explained. Electronics packaging is subjected to mechanical vibratio...