Avoidance of cracking damage due to hydration is an important objective in the design of nuclear reactor containments. Assessment of the safety against cracking requires a realistic material model and its effective numerical implementation. Toward this goal, the paper develops a comprehensive material model which includes approximate simulation of cracking based on the principles of cohesive fr...

In this paper a new method for the detection of delamination damage in composite beams using scanning Doppler laser vibrometry is presented. The recent advances in scanning laser technology now allow very accurate measurement of displacement fields, which in the case of undamaged structure must satisfy the fundamental equations of continuum mechanics. A violation of these equations at specific ...

contact mechanics is related to the deformation study of solids that meet each other at one or more points. the physical and mathematical formulation of the problem is established upon the mechanics of materials and continuum mechanics and focuses on computations involving bodies with different characteristics in static or dynamic contact. contact mechanics gives essential information for the s...

the aim of the present paper is to sbo» that anti-realism in science, 1vhich has a1;guab/y become more fashionable in recentyears, contrary to tuha: its proponents assert, cannot make use of quantum mechanics and its impressiue achievements as a frump card in justifying its claims. i will argue that scientific anti-realism far from providing scientific communiry with a progressive methodologica...

The effects of high frequency ventilation in combination with sustained inflations was studied in the surfactant-deficient lungs of 18 New Zealand White rabbits (weight 1.9-2.1 kg) during anaesthesia with urethane and neuromuscular block with pancuronium. Lung damage was induced by repeated lung lavage. In nine rabbits (group I) baseline ventilator settings were maintained constant throughout t...

The mechanical response of materials with spatial gradients in composition and structure is of considerable interest in disciplines as diverse as tribology, geology, optoelectronics, biomechanics, fracture mechanics, and nanotechnology. The damage and failure resistance of surfaces to normal and sliding contact or impact can be changed substantially through such gradients. This review assesses ...

Sn-Pb eutectic solder alloy is extensively used in microelectronics packaging interconnects. Due to the high homologous temperature, eutectic Sn-Pb solder exhibits creepfatigue interaction and significant time-, temperature-, stress-, and rate-dependent material characteristics. The microstructure is often unstable, having significant effects on the flow behavior of solder joints at high homolo...

Abstract A multidirectional damage model was proposed to predict fatigue evolution and final failure of composite laminates in this paper. characterization for established characterize the influence three main modes on damaged mechanical behavior at micro–macro level. The also based mechanics stiffness degradation by means model. Then, a relationship between residual strength introduced, from w...