Surface roughness is a significant parameter which determines the efficiency of optical components. Surface damages induced by grinding strongly influence the mechanical strength and optical quality of optical glasses. It is meaningful to rapid evaluate the surface roughness through the measurement of different grinding parameters. In this study, a cup diamond wheel (D64) is used in grinding pr...

Recently, the ‘drive-by’ or vehicle scanning technique has attracted increasing attention over last decade for purpose of bridge health monitoring. The feasibility this been demonstrated by many field tests. In comparison to conventional SHM, concept drive-by shows advantages in terms efficiency, economy, convenience, and mobility. It verified that wavelet transforms can successfully identify d...

this study was carried out to investigate the effect of esterification on the surface roughness of eastern cottonwood. eastern cottonwood was modified without using any catalyst and solvent at different temperatures and times with two linear chain carboxylic acid anhydrides (acetic anhydride or propionic anhydride). different weight percentage gains (wpgs) were obtained at different conditions....

in this paper, surface roughness of ht29 cancerous is determined using topography images obtained by atimic force microscopy (afm). the mean radiuses of cell and substrate surface asperities are determined, based on results of conducted roughness analysis and rabinovich roughness theory. these values have been applied in the equations of rough particle nanomanipulation dynamic model and the amo...

This study focuses on particulate matter emissions from tire–road contact and their investigation using an internal drum test bench. The bench is equipped with real-road surfaces has been upgraded to enable real-time measurements of matter. It was found that the road surface changes during tests due constant rolling over, influencing level significantly. To account for this effect, micro roughn...

abstract in all river engineering projects, determination of flow resistance is essential. most commonly, the manning roughness coefficient, , is used to describe the flow resistance or relative roughness of main channel or flood plane. over the past decades little or no study has been conducted to investigate the effects of particle shapes on manning roughness coefficient. therefore, it is the...

Agencies have long used subjective roughness ratings from panels of users to inform policy development on road maintenance strategies. The commoditization electronics motivated the more objective, automated, and cost-effective measurement technologies. Consequently, there has been an explosion ensemble measurements using smartphones or connected vehicles. Nevertheless, agencies no means relatin...

An acoustic backscatter technique proposed by Oelze et al. [J. Acoust. Soc. Am. 109, 1826-1832 (2001)] was used to characterize the roughness of porous soil surfaces. Roughness estimation errors are minimized when the effective flow resistivity of the porous soil is high, e.g., above 300,000 mks Rayls/m. Four soil plots were constructed by roughening soil with farming implements. Three plots we...

In-wheel-motor-drive electric vehicles have attracted enormous attention due to its potentials of improving vehicle performance and safety. Road surface roughness results in forced vibration in-wheel-motor (IWM) thus aggravates the unbalanced magnetic force (UEMF) between rotor stator. This can further compromise vertical longitudinal dynamics. paper presents a comprehensive study reveal couple...