Mechanical loading effects

Certain types of corrosion are selective. Thus, corrosion cracking is observed primarily in the case of alloys and only when these are in contact with particular media. Corrosion is often enhanced by various extraneous effects. Stress corrosion cracking can occur under appreciable mechanical loads or internal stresses corrosion fatigue develops under prolonged cyclic mechanical loads (i.e., loads alternating in sign). 

Shock is a clinical syndrome in which profound and widespread reduction in the effective delivery of oxygen and other nutrients to the tissues. In shock condition, the individual is weak, anxious with coldness of extremeties, sweeting and marked fall in arterial pressure. Physiologic mechanisms can effect the arterial pressure by acting on one or more of two variables i.e. preload, impedance to blood flow (after load) and myocardral contractility. These macha-nisms include ... 

The slidewire determines the linearity of the recorder. The linearity is limited by the slidewire resolution, its mechanical construction, and resistance loading effects. In the conventional wire-wound slidewire, the resolution is dictated by the number of turns. The linearity of the recorder then is equal to the ratio of a full-scale peak to that of the smallest discernible peak—one turn of the slidewire. Generally a linearity of 0.1% is available. By attenuating the input signal the linear range is effectively extended. 

A threshold level of interfacial adhesion is also necessary to produce a triaxial tensile state around rubber particles as the result of the cure process. When the two-phase material is cooled from the cure temperature to room temperature, internal stresses around particles are generated due to the difference of thermal expansion coefficients of both phases. If particles cannot debond from the matrix, this stress field magnifies the effect produced upon mechanical loading. 

Abstract When subjected to a mechanical loading, the solid phase of a saturated porous medium undergoes a dissolution due to strain-stress concentration effects along the fluid-solid interface. Through a micromechanical analysis, the mechanical affinity is shown to be the driving force of the local dissolution. For cracked porous media, the elastic free energy is a dominant component of this driving force. This allows to predict dissolution-induced creep in such materials. 

The morphological parameter C which controls the damaging effect of cracks appears to depend only on the crack density and the crack radius. In the case of cracks, the macroscopic mechanical loading defined by Ii or p is expected to induce a strong heterogeneity of the mechanical affinity, due to the stress/strain concentration in the vicinity of the crack tips. 

Butt, R.P., and Bishop, J.E. 1997. Mechanical load enhances the stimulatory effect of serum growth factors on cardiac fibroblast procollagen synthesis. J. Mol. Cell. Cardiol. 29 1141-1151. 

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