Closure to “Discussion of ‘Statistical Analysis, Estimation, and Optimization of Surface Finish in the Grinding Process’” (1975, ASME J. Eng. Ind., 97, p. 378)

1975 ◽  
Vol 97 (1) ◽  
pp. 378-378
Author(s):  
M. E. Zohdi
Keyword(s):  
Statistical Analysis ◽  
Surface Finish ◽  
Grinding Process

Statistical Analysis, Estimation, and Optimization of Surface Finish in the Grinding Process

1974 ◽  
Vol 96 (1) ◽  
pp. 117-123 ◽  
Author(s):  
M. E. Zohdi
Keyword(s):  
Statistical Analysis ◽  
Mathematical Models ◽  
Surface Finish ◽  
Maximum Rate ◽  
Grinding Process ◽  
Combined Effects ◽  
Optimum Conditions ◽  
The Individual ◽  
Dependent Factor

A method of identifying the individual as well as the combined effects of the different independent factors on the surface finish in the grinding process is presented. Physical experimentation coupled with subsequent statistical analysis, the factorial experimentation technique, were applied to further the understanding of this process. Mathematical models were developed to estimate the quality of the dependent factor, the surface finish. Optimum conditions that result in the best surface finish with the maximum rate of metal removed are evaluated and discussed.

Experimental Investigation of Microcutting Mechanisms in Marble Grinding

2009 ◽  
Vol 131 (6) ◽  
Author(s):  
LJ. Tanovic ◽  
P. Bojanic ◽  
R. Puzovic ◽  
S. Klimenko
Keyword(s):  
Experimental Study ◽  
Experimental Investigation ◽  
Cutting Force ◽  
Surface Finish ◽  
Normal Component ◽  
Natural Material ◽  
Grinding Process ◽  
Force Component ◽  
Diamond Grain

This paper offers an experimental study of the microcutting mechanisms in marble grinding to aid the optimization of the marble grinding process. The necessity for investigating these mechanisms is dictated by the increased use of marble in many applications and the fact that grinding and polishing processes are the dominant technologies used to meet surface finish requirements in this natural material. The experiments are aimed at the determination of the normal component of the cutting force and of the grain traces in microcutting with a single diamond grain. The investigations carried out make provisions for establishing critical grain penetration and cutting depths and allow the prediction of the normal cutting force component as a function of grain penetration speed and depth.

Genetic Programming for Grinding Surface Roughness Modelling

2012 ◽  
Vol 565 ◽  
pp. 183-189
Author(s):  
Xun Chen ◽  
Asma Alabed
Keyword(s):  
Surface Roughness ◽  
Genetic Programming ◽  
Material Removal Rate ◽  
Surface Finish ◽  
Material Removal ◽  
Removal Rate ◽  
High Accuracy ◽  
Grinding Process ◽  
Reliable Prediction ◽  
Modelling Process

Grinding process is commonly selected for finishing operation because grinding has high accuracy and surface finish with a relatively high material removal rate. One of the most common issues in grinding process planning is to determine grinding condition for required surface roughness. This paper presents a feasibility study on grinding surface roughness modelling using genetic programming (GP) method. It has successfully demonstrated that GP could provide reliable prediction and has advantages over other established methods in terms of dealing with missing data during modelling process.

scholarly journals Late Medieval complexes of the forest-steppe and sub-taiga Trans-Urals (based on materials from the settlement of Stary Pogost)

2021 ◽  
pp. 101-112
Author(s):  
T.N. Rafikova ◽  
O.M. Anoshko
Keyword(s):  
Statistical Analysis ◽  
Material Culture ◽  
Surface Finish ◽  
Western Siberia ◽  
Forest Steppe ◽  
Fish Scale ◽  
Building Structures ◽  
Cultural Layer ◽  
Late Medieval ◽  
Archaeological Investigation

The paper concerns the results of the archaeological investigation of the Late Medieval sites in the forest-steppe and sub-taiga regions of Trans-Urals (Western Siberia). With the example of the fortress of Stary Pogost, and using the materials on all studied Late Medieval sites of the region (the hillforts of Yelyak-Alyp, Maloye Bakalskoye, Chingi-Tura, Isker, Kuchum-gora, Ivanovskoye, Dolgovskoye 1, the sanctuary of Tsingalinskoye), the main aspects of the material culture of the population of the 14th–16th centuries have been reconstructed. The building structures are represented by above-ground or slightly sunken permanent buildings with pise-walled hearths. In the cultural level, ashy spots, cumulations of fish-scale, and bones of fish and animals were recorded. The sea-sonal occupancy of most of the settlements, thin cultural layer, small quantity or complete absence of ceramics complicate distinguishing of the Late-Medieval complexes from the full array of Medieval monuments of the forest-steppe and sub-taiga Trans-Urals. A statistical analysis of the ceramics collections from all Late Medieval sites of the Trans-Urals was carried out. Four main types of the ware were identified. By correlation with contemporaneous collections of the Middle Irtysh, local specifics of the ceramics of the studied region were determined. The small amount of the stoneware was noted. The decline of the ceramics manufacture reflected in the composition of the clay dough, surface finish, and shape of the vessels, and it was manifested by poor ornamentation or complete absence of décor. One type of the ware – large cauldron-shaped vessels with thick vertical or slightly inside-bent walls, flattened bottom, and poor ornamentation – was recorded only in the territory of the forest-steppe and sub-taiga Trans-Urals, as well as in the Ishym River area. This indicates its earlier chronological position (13th–14th cc. A.D.) and association with the population of the emerging Siberian Tatars. A widespread became the ware made from organic materials – wood and bark, as well as imported ware, including metallic items.

Influence of the Cutting Variables on the Surface Roughness of Alloy Steels Machined With Cylindrical Grinding

2004 ◽  
Author(s):  
Zulay Cassier ◽  
Patricia Mun˜oz-Escalona ◽  
Carlos Tepedino
Keyword(s):  
Mechanical Properties ◽  
Surface Roughness ◽  
Grain Size ◽  
Surface Finish ◽  
Mathematical Expression ◽  
Good Control ◽  
Grinding Process ◽  
Mechanical Parts ◽  
Aisi 4140 ◽  
Alloy Steels

In machining precision mechanical parts, the prediction and the control of the desired surface roughness is very important. The grinding process requires a good control of the operative variables to guarantee best results. This research analyses the influence of the cutting variables such as workpiece speed, wheels grain size, down feed, and workpiece hardness on the surface finish and it is shown how the surface roughness improves when using low values of workpiece speed, transverse feed and down feed, as well as a small wheel grain size. A mathematical expression for roughness, Ra, as a function of the cutting variables and the mechanical properties, is obtained in order to predict the value of surface roughness. AISI 4140, AISI 4340 and AISI O1 alloy steels under different conditions were used for the experiments.

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