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In one study, Rauh et al. treated PTFE with a pulsed ArF laser at 193 nm. Multiple pulses were required to achieve a uniform roughness across the surface due to inhomogeneity of the untreated material. Peel test results using epoxy resin showed an increase from 0.9 N/cm to 8.9 N/cm. [11]
Tensile & shear tester – tensile, shear; Pure bending tester – pure bending; Compression tester – compression; Surface tester – surface friction and roughness; The evaluation can include measurement of the transient heat transfer properties associated with the sensation of coolness generated when fabrics contact the skin during wear.
Surface roughness can be regarded as the quality of a surface of not being smooth and it is hence linked to human perception of the surface texture. From a mathematical perspective it is related to the spatial variability structure of surfaces, and inherently it is a multiscale property.
Surface metrology is the measurement of small-scale features on surfaces, and is a branch of metrology. Surface primary form, surface fractality, and surface finish (including surface roughness) are the parameters most commonly associated with the field. It is important to many disciplines and is mostly known for the machining of precision ...
In Wenzel state, adding surface roughness will enhance the wettability caused by the chemistry of the surface. The Wenzel correlation can be written as = where θ m is the measured contact angle, θ Y is the Young contact angle and r is the roughness ratio. The roughness ratio is defined as the ratio between the actual and projected ...
Under 25178, industry-specific taxonomies such as roughness vs waviness are replaced by the more general concept of "scale limited surface" and "cut-off" by "nesting index". The new available filters are described in the series of technical specifications included in ISO 16610 .
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