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Journal articles on the topic 'Roughness Deviation'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Luneckas, Tomas, Mindaugas Luneckas, and Dainius Udris. "Terrain Irregularity Sensing by Evaluating Feet Coordinate Standard Deviation." Applied Sciences 15, no. 1 (2025): 411. https://doi.org/10.3390/app15010411.

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Locomotion over rough terrain is still a problem yet to be solved for legged robots. One of the problems arises from the inability to identify terrain roughness during locomotion, which could be crucial for decision-making and successful task completion. Our proposed terrain roughness method is inspired by the observation that humans can sense their limb position in space without looking at them, which allows us to estimate obstacle heights. This method is based on robot feet coordinate standard deviation (further referred to as SD) parameter evaluation. SD values could be categorized to repre

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2

Gans, R. F. "On Random Reynolds Roughness." Journal of Tribology 109, no. 3 (1987): 427–31. http://dx.doi.org/10.1115/1.3261463.

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Lubricant fluxes and lubrication forces have been calculated for statistical realizations of a piecewise planar slider running over a smooth base with an incompressible lubricant. The statistics of the response are not simply related to those of the roughness. The standard deviation of the force increases approximately as the fourth power of the roughness deviation for probable contact situations.

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3

Loganina, Valentina I., Maria V. Zaytseva, and Georgy A. Fokin. "Quality Assurance for the Appearance of Paint Coatings." Key Engineering Materials 910 (February 15, 2022): 598–603. http://dx.doi.org/10.4028/p-uhwdtx.

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The article provides information on the application of statistical methods of product quality management to the analysis of the process of obtaining paint and varnish coatings with desired properties. A correlation has been established between the standard deviations of the roughness indicators of the coating surface and the surface to be painted. The relationship between the standard deviations for the surface roughness of the coatings and the surface to be painted is given. The results of calculating the values of the root-mean-square deviation of the roughness of the coatings and the class

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4

Lesovoy, Leonid, Fedir Matiko, and Bohdan Chaban. "Equation of Arithmetic Mean Deviation of Roughness Profile." Energy engineering and control systems 5, no. 2 (2019): 81–88. http://dx.doi.org/10.23939/jeecs2019.02.081.

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5

Ding, Xiuping, Ran Li, Pengfei Jin, et al. "Influence of Cold-Rolling Processes on the Dimensional Accuracy and Roughness of Small-Diameter Thick-Walled Seamless Tubes." Metals 14, no. 11 (2024): 1297. http://dx.doi.org/10.3390/met14111297.

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Cold pilgering is widely utilized in high-end applications for the precise shaping of seamless tubes due to its capacity for large deformation, which reduces the number of deformation processes and shortens production cycles. However, there is a gap in the research on the cold pilgering of small-diameter, thick-walled seamless tubes, specifically those with an outer diameter–wall thickness ratio of ≤3. In this study, cold pilgering tests were performed on Cr-Mo-V hot-working die steel small-diameter thick-walled tubes. It was discovered that increasing the feed rate results in greater deviatio

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Maiorova, Kateryna, Oleksii Andrieiev, Borys Lupkin, Victor Antonyuyk, and Sergii Vysloukh. "Formation of the quality of holes obtained by drilling in aviation structures made from polymer composite materials." Eastern-European Journal of Enterprise Technologies 3, no. 1 (123) (2023): 59–67. http://dx.doi.org/10.15587/1729-4061.2023.279618.

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The subject of this study is the quality indicators (geometric accuracy, roughness, cylindricity and taperness) of holes obtained by drilling in aircraft structures (AS) made of polymeric composite materials (PCM). The quality indicators of holes in AS made from PCM were studied by using kinematic schemes across and along the direction of drilling. A kinematic scheme of formation of the predicted surface roughness of the hole in AS made from PCM has been built. The calculation of the predicted roughness of PCM holes taking into account the geometry of the drill and drilling modes has been prop

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Garg, Kanav, Impreet Kaur, Akshaysinh P. Vala, C. Deepashree, Vishnuja V. R. Nair, and Nivya John. "Investigation of the Surface Roughness and Hardness of Different Denture Teeth Materials: An In vitro Study." Journal of Pharmacy and Bioallied Sciences 16, Suppl 1 (2024): S427—S430. http://dx.doi.org/10.4103/jpbs.jpbs_644_23.

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ABSTRACT Background: Surface roughness and hardness are key factors that influence the clinical performance and durability of denture teeth. Understanding variations in these properties among different denture teeth materials can assist in selecting the most suitable materials for optimal patient outcomes. This study aimed to investigate the surface roughness and hardness of four commonly used denture teeth materials: acrylic resin, composite resin, porcelain, and nanohybrid composite. Materials and Methods: Ten specimens were prepared for each denture teeth material, resulting in a total of 4

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Turek, Paweł, Anna Bazan, and Marcin Bulicz. "Effect of 3D Printing Orientation on the Accuracy and Surface Roughness of Polycarbonate Samples." Machines 13, no. 1 (2024): 9. https://doi.org/10.3390/machines13010009.

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The study evaluates models produced using fused deposition modeling (FDM) technology in five orientations, fabricated from polycarbonate (PC) material with a FORTUS 360mc printer. The models included simple shapes (planes and cylinders) and complex free-form surfaces. Accuracy was assessed using a GOM Scan 1 scanner and GOM Inspect 2019 software, focusing on 3D deviations and dimensional and geometric deviations (form, position, and orientation, which have not yet been analyzed in similar studies and may limit the usage of the printed elements). Surface roughness was analyzed using a MarSurf X

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9

Rumyantsev, M. I., A. N. Zavalishchin, and V. L. Kornilov. "Assessment of the sheet steel surface roughness to justify the target values of its parameters." Ferrous Metallurgy. Bulletin of Scientific , Technical and Economic Information 80, no. 8 (2024): 45–53. http://dx.doi.org/10.32339/0135-5910-2024-8-45-53.

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Sheet steel roughness estimation is considered as determination of influence of surface roughness on quality characteristics and production process efficiency. A comprehensive quantitative assessment of the impact of the steel base surface roughness on the quality and quantity of the highest grade of Electrolytic Tinplate was performed. An increase in the Arithmetical mean deviation of the assessed profile (Ra), oriented perpendicular to the rolling direction, increases the tin consumption, worsens the corrosion resistance and stampability of the Electrolytic Tinplate. However, at the same tim

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10

Kind, R. J., P. J. Serjak, and M. W. P. Abbott. "Measurements and Prediction of the Effects of Surface Roughness on Profile Losses and Deviation in a Turbine Cascade." Journal of Turbomachinery 120, no. 1 (1998): 20–27. http://dx.doi.org/10.1115/1.2841383.

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Measurements of pressure distributions, profile losses, and flow deviation were carried out on a planar turbine cascade in incompressible flow to assess the effects of partial roughness coverage of the blade surfaces. Spanwise-oriented bands of roughness were placed at various locations on the suction and pressure surfaces of the blades. Roughness height, spacing between roughness elements, and band width were varied. A computational method based on the inviscid/viscous interaction approach was also developed; its predictions were in good agreement with the experimental results. This indicates

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11

Farooq, Muhammad Umar, Saqib Anwar, M. Saravana Kumar, et al. "A Novel Flushing Mechanism to Minimize Roughness and Dimensional Errors during Wire Electric Discharge Machining of Complex Profiles on Inconel 718." Materials 15, no. 20 (2022): 7330. http://dx.doi.org/10.3390/ma15207330.

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One of the sustainability goals in the aeronautical industry includes developing cost-effective, high-performance engine components possessing complex curved geometries with excellent dimensional precision and surface quality. In this regard, several developments in wire electric discharge machining have been reported, but the influence of flushing attributes is not thoroughly investigated and is thus studied herein. The influence of four process variables, namely servo voltage, flushing pressure, nozzle diameter, and nozzle–workpiece distance, were analyzed on Inconel 718 in relation to geome

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12

ÇOLAK, Bilal, Zahoor AHMED, Batuhan ÖZAKIN, and Naci KURGAN. "An Experimental Investigation into Roughness Transfer in Asymmetrical Rolling of Steel Strips." Karadeniz Fen Bilimleri Dergisi 13, no. 3 (2023): 1070–89. http://dx.doi.org/10.31466/kfbd.1289221.

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This study investigated the effect of rolling parameters such as speed, thickness reduction, roll surface roughness, material thickness, surface condition (dry or lubricated), and rolling force on the roughening characterization in asymmetrical rolling. The surface roughness of the samples subjected to rolling tests was measured. The roughness values' average and standard deviation were found, and 3-D scanning images were acquired. Lubricated texturing experiments revealed that lubrication reduced roughness transfer. It was found that the introduction of roughness on the material surface decre

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13

Denkena, Berend, Thilo Grove, and Eike Hasselberg. "Workpiece Shape Deviations in Face Milling of Hybrid Structures." Materials Science Forum 825-826 (July 2015): 336–43. http://dx.doi.org/10.4028/www.scientific.net/msf.825-826.336.

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A currently common method to design high-performance workpieces is to combine two or more materials to one compound. This way, workpieces can be composed of the most qualified materials according to local loads.When machining high-performance workpiece compounds (e.g. cylinder crankcases), high quality requirements concerning the accuracy of dimension and shape as well as the surface roughness must be fulfilled. However, machining of workpiece compounds leads to unfavorable changes of the workpiece quality in comparison to machining of the single materials. Significant shape deviations occur w

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14

Subardi, Anang, Aladin Eko Purkuncoro, and Achmad Taufik. "Effect of Wire Straighness Electric Current Variation on Size Diversion and Rude of The Cutting Current Profile of Medium Carbon Steel Dental from Wire (EDM)." Journal of Energy, Mechanical, Material, and Manufacturing Engineering 6, no. 3 (2021): 161–66. https://doi.org/10.22219/jemmme.v6i3.16403.

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Wire Electric Discharge Machine (EDM) is a non-conventional metal cutting machine. This machine is commonly used to form machine components that have complex shapes and require high precision. Not many conventional and non-conventional machines are capable of producing small module gears. The cutting groove occurs from the erosion of the electric spark by the electrode wire moving from the coil of wire and forming or cutting the workpiece. One of the machining parameters that determine the quality of the product on an EDM wire is Current. So this study aims to determine the deviation of the ge

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15

Liu, Xian Li, Chun Ya Wu, Yi Zhi Liu, Fu Gang Yan, Yu Fu Li, and Peng Wang. "Detection of Grinding Surface’s Quality Based on Image Technique." Key Engineering Materials 359-360 (November 2007): 499–503. http://dx.doi.org/10.4028/www.scientific.net/kem.359-360.499.

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Aiming at different grinding surfaces of hardened bearing steel GCr15, this paper made experimental research on detection method of surface roughness based on image technique. Adopting cold light source and five kinds of LED light sources, such as low-angle light, collimated light and coaxial light, we analyzed image characteristics of grinding surface under different processing conditions and found that there was a good correlation between standard deviation of gray variance and roughness of grinding surface. In comparison with the results from traditional surface roughness measuring instrume

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16

Wang, Yang Jun, M. Zhou, and Y. H. Zhao. "The Study on Three-Dimensional Roughness of Machined Surface in High Speed Milling of SiCp/Al Composites." Advanced Materials Research 188 (March 2011): 179–83. http://dx.doi.org/10.4028/www.scientific.net/amr.188.179.

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For the purpose of investigating the effect on surface micro-topography of cutting parameters in high speed milling of SiCp/Al Composites, the high speed milling experiments were performed .The machined surface was measured by Taylor Hobson roughness tester and OLS3000 Confocal Laser Scanning Microscope. The acquired surface data was dealt with the three-dimensional roughness method. The three-dimensional root-mean-square deviation of the surface Sq and two-dimensional root-mean-square deviation Rq were compared. The effects of cutting parameters on three-dimensional roughness parameter were a

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17

TOMOVSKA, ELENA, and LUBOS HES. "SURFACE ROUGHNESS OF POLYAMIDE KNITTED FABRICS." Fibres and Textiles 30, no. 1 (2023): 143–46. http://dx.doi.org/10.15240/tul/008/2023-1-026.

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Fabrics are never ideally smooth. Their texture varies between fine and coarse, quantified through the surface’s vertical deviation. Fabric roughness, or its opposite smoothness, is employed as measure of the surface texture of fabrics. In general, texture depends upon fiber properties, yarn count, yarn twist, and fabric structure and fabric design). This research aims to determine the limitations in visual perception of surface roughness in comparison to objective surface roughness measurements of low weight polyamide fabrics. Subjective evaluation is used for the visual assessment, while ins

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18

Cica, Djordje, Stevo Borojevic, Goran Jotic, Branislav Sredanovic, and Sasa Tesic. "Multiple performance characteristics optimization in end milling of thin-walled parts using desirability function." Transactions of the Canadian Society for Mechanical Engineering 44, no. 1 (2020): 84–94. http://dx.doi.org/10.1139/tcsme-2019-0038.

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With the development of high-performance CNC machine tools, milling has been established as one of the main means of machining thin-walled parts. Thus, the selection of process parameters for milling operations is an important issue in end milling of thin-walled parts to assure product quality and increase productivity. The current study explores three machining parameters, namely wall thickness, feed, and machining strategies, that influence dimensional and form errors, surface roughness, and machining time milling of 7075-T6 aluminum alloy thin-walled parts. The effects of machining paramete

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19

Kowalczyk, Marek. "Strong phase diffusers with the minimized standard deviation of roughness." Journal of the Optical Society of America A 3, no. 8 (1986): 1293. http://dx.doi.org/10.1364/josaa.3.001293.

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20

Beljaars, A. C. M. "On the memory of wind standard deviation for upstream roughness." Boundary-Layer Meteorology 38, no. 1-2 (1987): 95–101. http://dx.doi.org/10.1007/bf00121557.

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21

Nagy, Antal, and Gyula Varga. "Effect of abandonment of cooling and lubrication on surface roughness and cylindricity in turning of steel." Multidiszciplináris tudományok 11, no. 4 (2021): 395–407. http://dx.doi.org/10.35925/j.multi.2021.4.43.

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One of the defining global issues today is to reduce the load on the environment. Thus, in this paper, the effect, and consequences of the abandonment of cooling and lubrication were investigated when turning of non-alloyed steel. The 2D and 3D surface roughness parameters, cylindricity deviations and circularity errors were examined at different feeds and cutting speeds. The experiments were performed, using the full factorial experimental design method. It was found that with dry machining, the average roughness is slightly higher with increasing productivity, however, at lower feed and cutt

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22

Murashima, Motoyuki, Takaharu Murooka, Noritsugu Umehara, and Takayuki Tokoroyama. "Development of Surface Roughness Generation Model for CFRTP Manufactured by LFT-D." International Journal of Automation Technology 14, no. 2 (2020): 208–16. http://dx.doi.org/10.20965/ijat.2020.p0208.

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In this study, we propose a new surface generation model for carbon fiber reinforced thermoplastics (CFRTP) manufactured by the long fiber thermoplastic-direct (LFT-D) method. CFRTP are considered to be a next-generation structural material because of their high productivity as well as high mechanical strength and lightness. Conversely, CFRTP have a rough surface, which does not meet the automotive outer panel standard of a “class A surface.” In the present study, we establish a surface roughness generation model based on a thermal shrinkage mismatch of thermoplastic resin to carbon fiber and

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23

Oravcová, J., and E. Labašová. "The analysis of surface roughness of the samples produced by 3D printing." Journal of Physics: Conference Series 2413, no. 1 (2022): 012010. http://dx.doi.org/10.1088/1742-6596/2413/1/012010.

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This paper deals with measurement and analysis of surface roughness of samples produced by 3D printing, Gembird white and Verbatim white. Process parameters such as print speed, print layer thickness, and print material changed when the samples were printed. The surface roughness of the samples was measured using the TR200 roughness meter. The paper analyzes the roughness parameter Ra, which represents the mean arithmetic deviation of the profile.

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24

Mhmood, Tiba Raed, and Nazar Kais AL-Karkhi. "Multiobjective Optimization of Stereolithography for Dental Bridge Based on a Simple Shape Model Using Taguchi and Response Surface Methods." Applied Sciences 13, no. 19 (2023): 10911. http://dx.doi.org/10.3390/app131910911.

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Stereolithography (SLA) has become an essential photocuring 3D printing process for producing parts of complex shapes from photosensitive resin exposed to UV light. The selection of the best printing parameters for good accuracy and surface quality can be further complicated by the geometric complexity of the models. This work introduces multiobjective optimization of SLA printing of 3D dental bridges based on simple CAD objects. The effect of the best combination of a low-cost resin 3D printer’s machine parameter settings, namely normal exposure time, bottom exposure time and bottom layers fo

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Park, Na Young, Young Chan Ko, Hyoung Jin Kim, and Byoung Geun Moon. "Surface characterization of paper products via a stylus-type contact method." BioResources 16, no. 3 (2021): 5667–78. http://dx.doi.org/10.15376/biores.16.3.5667-5678.

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Surface properties include both surface roughness and friction. With a stylus-type contact method, it is necessary to obtain either a surface roughness profile or a friction profile that is affected by stylus shape and size, its contact force on the sample, the scan speed, and the data acquisition rate. As a new surface parameter, the mean absolute deviation (MAD) from an average property has been introduced. It represents the deviation from either the roughness average (Ra) and the average coefficient of friction (COF), respectively. While Ra or average COF depends on the instrument and its o

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26

Almeida, Rui, Timon Ebert, Rainer Börret, and Mario Pohl. "Steel mould surface improvement by robot fluid jet polishing and robot pad polishing for polymer optic production." EPJ Web of Conferences 215 (2019): 05003. http://dx.doi.org/10.1051/epjconf/201921505003.

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In order to improve the quality of injection-moulded polymer optic parts, it is necessary to improve the quality of the respective steel moulds. For this reason, it is not only necessary to improve the surface roughness of the mould, but also its geometrical shape. The material removal obtained from robot pad polishing is too low. This makes a shape correction after the milling step a very prolonged process. The aim of this work is to use a polishing chain to improve the surface quality of steel samples in terms of shape deviation and surface roughness. This correction polishing chain uses the

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27

Lee, H. K., G. E. Yang, and Hong Gun Kim. "Molding Characteristics of Etched Surface Pattern in Polymers." Key Engineering Materials 306-308 (March 2006): 1001–6. http://dx.doi.org/10.4028/www.scientific.net/kem.306-308.1001.

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Molding characteristics are presented for the surface pattern of polymeric materials in injection molding. They are related to the polymer properties and surface roughness of the etched mold. The polymer structure and the mold roughness can affect roughness deviation and surface duplication quality on polymers. Experiments are performed with respect to the surface roughness analysis. It is expected that the duplication properties can contribute to molding process of surface pattern in injection molding.

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28

Chen, Yu-Feng, Chin-Yun Pan, Yung-Chung Chen, Je-Kang Du, and Ting-Hsun Lan. "Accuracy and Wear Evaluation of the Customized Zirconia Guided Sleeves." Applied Sciences 11, no. 19 (2021): 9035. http://dx.doi.org/10.3390/app11199035.

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This in vitro study investigated the accuracy and wear conditions of three drill sleeve distances (0.01, 0.02, and 0.03 mm) for 3D-guided stents in simulated clinical dental implant surgery. Fifteen sets of upper and lower partially edentulous epoxy tooling board models with four edentulous first molar sites were prepared in a Nissin Simple Manikin II and set on a dental chair. Sixty computer-aided design and computer-aided manufacturing (CAD/CAM) designed and guided stents with three drill sleeve distances were prepared in this study. The maximum height (Sz) of the wear roughness of drills, m

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29

Igarashi, Toshio, Soichiro Ohno, Sayaka Oda, Satoru Hirosawa, Yusuke Hiejima, and Koh-hei Nitta. "Surface damage characterization of photodegraded low-density polyethylene by means of friction measurements." Journal of Polymer Engineering 39, no. 9 (2019): 805–12. http://dx.doi.org/10.1515/polyeng-2019-0071.

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Abstract Friction measurements have been carried out to characterize surface damages during photodegradation of low-density polyethylene. The average and mean deviation of the friction coefficients increase with the irradiation time in the early stage of photodegradation processes, indicating the increase in the surface roughness, whereas the mechanical properties remain essentially unchanged. In the following stage, where the ductile-brittle transition takes place, the mean deviation of the friction coefficients shows an appreciable decrease with maintaining almost constant average values, su

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30

Bronis, Mateusz, Bartlomiej Krawczyk, and Stanislaw Legutko. "Effect of Choice of Drilling Kinematic System on Cylindricity Deviation, Roundness Deviation, Diameter Error and Surface Roughness of Holes in Brass Alloy." Processes 12, no. 1 (2024): 220. http://dx.doi.org/10.3390/pr12010220.

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This article presents the results of an experimental study on the effect of the selection of kinematic system for the drilling process on the cylindricity deviation, roundness deviation, diameter error and surface roughness of holes in brass alloy. Three different kinematic systems based on the dependence of the direction of rotation of the workpiece and the drill bit were used. The drill bit was mounted in an axially driven holder that allowed it to be put into motion. Cutting tests were conducted at three different spindle speeds and three different feed rates per revolution (27 tests in tot

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31

Liu, Yanming, Jiahe Li, and Alexander J. Smits. "Roughness effects in laminar channel flow." Journal of Fluid Mechanics 876 (August 15, 2019): 1129–45. http://dx.doi.org/10.1017/jfm.2019.603.

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The effects of roughness on the frictional drag and pressure drop in laminar channel flow are investigated numerically. The inflow is fully developed smooth wall flow, and square rib roughness, aligned normal to the bulk flow direction, is introduced as a step change. The roughness height and spacing are systematically varied, and the flow is examined as it develops over the rough wall and becomes fully developed. The length of the development region depends primarily on the roughness height, although the effects of spacing become more important as the height decreases. In the fully developed

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32

Xia, Ru Ting. "A Study on Machinability in Turning 1Cr18Ni9Ti Steel under Minimum Quantity Lubrication Machining." Advanced Materials Research 181-182 (January 2011): 1013–17. http://dx.doi.org/10.4028/www.scientific.net/amr.181-182.1013.

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The present study show that metal cutting fluids changes the machinability because of their lubrication and cooling in turning 1Cr18Ni9Ti steel under minimum quantity lubrication (MQL) Machining. The experiments compares the mechanical performance of MQL to completely dry lubrication for the turning of 1Cr18Ni9Ti steel based on experimental measurement of cutting temperature, cutting forces, surface roughness, and dimensional deviation. Results indicated that the use of near dry lubrication leads to lower cutting temperature and cutting force, favorable chip-tool interaction, reduced tool wear

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Choopani, Yahya, Mohsen Khajehzadeh, and Mohammad Reza Razfar. "Optimal parameters of abrasive flow finishing for hip joint implants." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 235, no. 11 (2021): 1818–31. http://dx.doi.org/10.1177/0954405421995614.

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Total hip arthroplasty (THA) is one of the most well-known orthopedic surgeries in the world which involves the substitution of the natural hip joint by prostheses. In this process, the surface roughness of the femoral head plays a pivotal role in the performance of hip joint implants. In this regard, the nano-finishing of the femoral head of the hip joint implants to achieve a uniform surface roughness with the lowest standard deviation is a major challenge in the conventional and advanced finishing processes. In the present study, the inverse replica fixture technique was used for automatic

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34

Curran, Brian, Ivan Ndip, Christian Werner, et al. "An adapted filament model for accurate modeling of printed coplanar lines with significant surface roughness and proximity effects." International Journal of Microwave and Wireless Technologies 2, no. 3-4 (2010): 273–81. http://dx.doi.org/10.1017/s1759078710000450.

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New technologies have resulted in transmission lines that deviate significantly from the intended rectangular cross sections. Trapezoidal cross sections and roughness that penetrate a significant depth into the surface in comparison to the skin-depth of the conductor can cause a very significant deviation in transmission line parameters from predicted values. Proximity effect further complicates the analysis by increasing losses and changing the impact of surface roughness by changing the current distribution. A skin-effect filament model that combines a traditional skin-effect filament modeli

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Jeong, Dahae, Han Choi, Yong Choi, and Wootae Jeong. "Measuring Acoustic Roughness of a Longitudinal Railhead Profile Using a Multi-Sensor Integration Technique." Sensors 19, no. 7 (2019): 1610. http://dx.doi.org/10.3390/s19071610.

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It is necessary to measure accurately the rolling noise generated by the friction between wheels and rails in railway transport systems. Although many systems have recently been developed to measure the surface roughness of wheels and rails, there exist large deviations in measurements between each system whose measuring mechanism is based on a single sensor. To correct the structural problems in existing systems, we developed an automatic mobile measurement platform, named the Automatic Rail Checker (ARCer), which measures the acoustic roughness of a longitudinal railhead profile maintaining

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36

Emeis, S., and S. S. Zilitinkevich. "Resistance law, effective roughness length, and deviation angle over hilly terrain." Boundary-Layer Meteorology 55, no. 1-2 (1991): 191–98. http://dx.doi.org/10.1007/bf00119334.

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37

Venner, C. H., and W. E. ten Napel. "Surface Roughness Effects in an EHL Line Contact." Journal of Tribology 114, no. 3 (1992): 616–22. http://dx.doi.org/10.1115/1.2920926.

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In this paper the influence of surface roughness on the pressure profile and film thickness in a steady state EHL line contact is investigated using input from an actually measured roughness profile in the calculations. Pressure profiles and film shapes for different load conditions are shown. The presented results strongly indicate that in the steady state situation considered here a significant deformation of the roughness profile occurs. As a result the often used λ parameter being the ratio of film thickness and standard deviation of the roughness (h/σ) with σ based on the undeformed rough

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Ding, Haohan, David I. Wilson, Wei Yu, Brent R. Young, and Xiaohui Cui. "Application of Three-Dimensional Digital Photogrammetry to Quantify the Surface Roughness of Milk Powder." Foods 12, no. 5 (2023): 967. http://dx.doi.org/10.3390/foods12050967.

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The surface appearance of milk powders is a crucial quality property since the roughness of the milk powder determines its functional properties, and especially the purchaser perception of the milk powder. Unfortunately, powder produced from similar spray dryers, or even the same dryer but in different seasons, produces powder with a wide variety of surface roughness. To date, professional panelists are used to quantify this subtle visual metric, which is time-consuming and subjective. Consequently, developing a fast, robust, and repeatable surface appearance classification method is essential

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Michalik, Peter, Jana Fabianova, Leopold Hrabovsky, Marinko Maslarić, Luboslav Straka, and Jozef Macej. "Assessment of a robot base production using CAM programming for the FANUC control system." Open Engineering 11, no. 1 (2021): 922–28. http://dx.doi.org/10.1515/eng-2021-0085.

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Abstract The subject of the article is the research of the production of a robot base using CAM programming, Autodesk Inventor HSM software, followed by the generation of G code – NC program. The research specifically examined the accuracy of measurement and evaluation of roundness with coaxiality on a 3D measuring device Thome. The surface roughness of the circular holes was measured using a Mitutoyo SJ 400 roughness meter. The maximum deviation of the roundness of the diameter D56H7 measured was 0.011 mm, and the diameter D72H7 measured was 0.013 mm. The coaxiality deviation of the diameters

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Somatkar, Avinash, Rashmi Dwivedi, and Satish Chinchanikar. "Comparative evaluation of roller burnishing of Al6061-T6 alloy under dry and nanofluid minimum quantity lubrication conditions." Metal Working and Material Science 26, no. 4 (2024): 57–74. https://doi.org/10.17212/1994-6309-2024-26.4-57-74.

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Introduction. Roller burnishing is one of the most popular methods for improving the surface quality of a workpiece, increasing its wear resistance, microhardness and corrosion resistance. During the processing, the workpiece is compressed and smoothed under the pressure of hardened roller. Purpose of the work. The results of the research show that the introduction of minimum quantity lubrication (MQL) during roller burnishing makes it possible to increase the efficiency of the process by reducing friction and improving lubrication. Studies have shown that the use of nanofluids under MQL condi

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Celebi, S., K. Yelken, O. N. Develioglu, et al. "Acoustic, perceptual and aerodynamic voice evaluation in an obese population." Journal of Laryngology & Otology 127, no. 10 (2013): 987–90. http://dx.doi.org/10.1017/s0022215113001916.

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AbstractObjective:To investigate perceptual, acoustic and aerodynamic voice parameters in obese individuals.Methods:Twenty obese and 20 normal-weight volunteers underwent voice evaluation by laryngoscopy, acoustic analysis, aerodynamic measurement and perceptual analysis (using the grade-roughness-breathiness-asthenia-strain (‘GRBAS') scale and the Voice Handicap Index 10 scale). Data from both subject groups were compared.Results:No difference was found in acoustic analysis parameters between the two groups (p > 0.05). Maximum phonation time in the obese group (mean ± standard deviation, 1

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Brubaker, Kristen M., Wayne L. Myers, Patrick J. Drohan, Douglas A. Miller, and Elizabeth W. Boyer. "The Use of LiDAR Terrain Data in Characterizing Surface Roughness and Microtopography." Applied and Environmental Soil Science 2013 (2013): 1–13. http://dx.doi.org/10.1155/2013/891534.

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The availability of light detection and ranging data (LiDAR) has resulted in a new era of landscape analysis. For example, improvements in LiDAR data resolution may make it possible to accurately model microtopography over a large geographic area; however, data resolution and processing costs versus resulting accuracy may be too costly. We examined two LiDAR datasets of differing resolutions, a low point density (0.714 points/m2spacing) 1 m DEM available statewide in Pennsylvania and a high point density (10.28 points/m2spacing) 1 m DEM research-grade DEM, and compared the calculated roughness

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Hongjun, Wang, Wei Chen, Liu Bingcai, and Tian Ailing. "Research on Rapid Measurement Technology of Roughness Based on Light Scattering." Journal of Physics: Conference Series 2198, no. 1 (2022): 012024. http://dx.doi.org/10.1088/1742-6596/2198/1/012024.

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Abstract The roughness is an important parameter to evaluate the parts surface quality, so it is very important to measure the surface roughness of high-precision parts. In order to meet the needs of rapid and non-contact measurement of surface roughness, a new method based on optical scattering distribution is proposed in this paper. By analyzing the modulation effect of surface roughness on incident light, the relationship between surface roughness and scattering distribution is established. Based on the analysis of the characteristics of light source, detector and their relative position, t

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Lishchenko, N. V., V. P. Larshin, and J. Pitel. "Vibrational Impact on Milled Surface Irregularities." Journal of Engineering Sciences 7, no. 1 (2020): A8—A16. http://dx.doi.org/10.21272/jes.2020.7(1).a2.

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The methodology and results of a simultaneous study of causally linked parameters of mechanical vibration (cause) and surface irregularities (consequence) in flat milling with an end mill are given. The features of measurement and analysis of surface quality parameters through the application of the separation frequency method of profilogram harmonic components on the surface roughness, waviness, and the deviation of the profile are reviewed. A new method of profilogram digital processing is developed, comprising the steps of its digitization, low-pass filtering, and the formation of the rough

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Lopes, Leonardo Wanderley, Débora Pontes Cavalcante, and Priscila Oliveira da Costa. "Severity of voice disorders: integration of perceptual and acoustic data in dysphonic patients." CoDAS 26, no. 5 (2014): 382–88. http://dx.doi.org/10.1590/2317-1782/20142013033.

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Purpose:To analyze the correlation between acoustic measures and intensity of vocal deviation, and its discriminatory power in detecting the presence of vocal change, classifying the severity of the deviation and differencing the type of predominant voice.Methods:The sample comprised 186 patients with dysphonia. The vocal deviation from the vowel/ε/was evaluated by consensus between three speech language pathologists, using a Visual Analog Scale. We extracted the mean and standard deviation (SD) of the fundamental frequency (F0), jitter, shimmer, and Glottal-to-Noise Excitation Ratio (GNE).Res

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Gökçe, Hüseyin. "Investigation of Burr Formation and Tool Wear During the Drilling of Commercial Purity Copper Material." Celal Bayar Üniversitesi Fen Bilimleri Dergisi 16, no. 4 (2020): 419–27. https://doi.org/10.18466/cbayarfbe.742762.

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Copper is one of the materials that are sought and requested in many sectors due to its high electrical and thermal conductivity values. Its high ductility makes it difficult to drill commercial purity copper and has a negative effect on hole quality. In this study, commercial purity copper material was subjected to drilling tests with HSS drills without using coolant. Surface roughness, deviation from diameter and deviation from cylindrical values were measured in varying drilling conditions and also modeled by regression analysis. Quantitative effects of the results were determined by analys

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Hutyrová, Zuzana, and Imrich Orlovský. "Assessment of Micro-Geometric and Macro-Geometric Parameters after Machining Composite Material with Natural Fibres." Applied Mechanics and Materials 616 (August 2014): 276–83. http://dx.doi.org/10.4028/www.scientific.net/amm.616.276.

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This paper present problem of the examination of the parameters of cutting process on the micro-geometric and macro-geometric parameters after the turning of composite material with natural reinforcement (material is combination of two different phases the plastic matrix and wood flour). The article deals with effect of feed rate and cutting speed to roundness deviation and maximum roughness depth. The results were analyzed using device of surface roughness, roundness/cylindricity and digital microscopic camera. From the result, the surface roughness are mostly influenced by feed rate.

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Rath, Debabrata, Pratap Chandra Padhi, Sudhir Kumar, Inderjeet Singh, N. Nagaprasad, and Ramaswamy Krishnaraj. "Wedm Process Optimization for Machining Characteristcis of AISI 52100 Grade Alloy Steel." Advances in Materials Science and Engineering 2022 (December 13, 2022): 1–12. http://dx.doi.org/10.1155/2022/6316799.

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The present study deals with one of such investigations, which focuses on optimization of the different machining parameters of WEDM for AISI 52100 grade steel. For this work, a standard design of experimentation (DOE) based on Taguchi L27 orthogonal array (OA) has been used by selecting 6 different input parameters of the WEDM for optimization of two output characteristics (surface roughness (Ra) and dimensional deviation (DD). The results suggest that Pulse on Time (Ton): 1µs, Pulse off time: 18µs; Wire Feed (WF): 12mm/min, Spark Gap Set Voltage (SV): 20V, Wire Tension (WT): 1650, and Servo

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Zhou, Wei, Jinyuan Tang, and Yanfei He. "Formulae of roughness peak distribution parameters with standard deviation and correlation length." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 229, no. 12 (2015): 1395–408. http://dx.doi.org/10.1177/1350650115579212.

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XU, Jingbo. "DECREASING THE AMPLITUDE CHARACTERISTIC DEVIATION OF GAUSSIAN FILTER IN SURFACE ROUGHNESS MEASUREMENTS." Chinese Journal of Mechanical Engineering 42, no. 04 (2006): 42. http://dx.doi.org/10.3901/jme.2006.04.042.

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