Interaction of relative humidity with solvent(s) is relatively more important in obtaining surface pores than solvent volatility and phase separation.

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This report presents a novel technique to assess the moisture management test on uniformly stretched compression fabrics using a clamping device, which represents behavior close to the actual behavior when worn, the effects of stretching on hydrophobic/hydrophilic and surface patterning on polyethylene terephthalate (PET) and nylon fabrics. The wicking behaviors of stretching, coating and patterning are discussed. We report that (1) coated compression fabrics were found to enhance moisture management based on the bottom spreading speed, top absorption rate and one-way transport capability criteria, (2) stretching plays a significant role in moisture management and (3) the best moisture management performance was exhibited by the hydrophobic inner and hydrophilic outer-coated PET fabric, under stretched conditions.

The differential-pressure test is an original, nondestructive, experimental technique for determining incipient buckling pressures of thin shells subjected to external pressure. Extensions of the basic test permit study of many buckling parameters as well as other mechanical factors in thin-shell design and evaluation. The salient feature of the technique is the filling of the internal volume of the shell with a compressible fluid, such as water, to control the magnitude and rate of shell deformation. The incipient buckling pressure is detected by noting the point at which the difference in internal and external pressure becomes constant. Experimental verification of the technique and its nondestructive aspect is presented. Applications and limitations of the test are discussed.

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