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.

Experimental Investigation of Microcutting Mechanisms in Granite Grinding

2011 ◽  
Vol 133 (2) ◽  
Author(s):  
Lj. Tanovic ◽  
P. Bojanic ◽  
R. Puzovic ◽  
M. Milutinovic
Keyword(s):  
Experimental Investigation ◽  
Cutting Force ◽  
Penetration Depth ◽  
Mechanical Engineering ◽  
Brittle Materials ◽  
Grinding Process ◽  
Diamond Grain

This paper shows the results of investigations performed in the brittle materials microcutting at the Faculty of Mechanical Engineering, Belgrade University. The interactions between a single diamond grain and the machined granite are analyzed. The change in the normal cutting force as a function of grain penetration speed and depth was experimentally established in microcutting of two types of granite originating from Serbia. Based on the grain traces on granite and the generated cracks, the critical grain penetration depth for the formation of brittle fracturing was established. The experiments are intended to assist in the optimization of the grinding process as technology dominant in the granite finishing.

Experimental Investigation and Parameter Optimization of Micro Holes Machining on Ti-6Al-4V Alloy

2015 ◽  
Vol 813-814 ◽  
pp. 332-336
Author(s):  
R.A. Aravind ◽  
Shivakumar Ganesh ◽  
Syed Mohammed Yasir ◽  
G. Madhan Mohan ◽  
Vijayan Krishnaraj ◽  
...  
Keyword(s):  
Experimental Study ◽  
Experimental Investigation ◽  
Process Parameters ◽  
Electric Discharge ◽  
Optimum Process ◽  
Grinding Process ◽  
Taguchi’S Method ◽  
Electro Discharge Machining ◽  
Micro Holes ◽  
Variance Approach

This paper presents an experimental study on the diametrical overcut and taper obtained during the machining of micro holes by electro-discharge machining (EDM). Many trials were taken by machining a 2.0 mm electrolytic copper rod to 0.50 mm under various conditions to analyse the effect of process parameters by wire electric discharge grinding process (WEDG). The optimum process parameters were determined by Taguchi’s method. Then a set of electrodes were produced with the determined optimum process parameters and were used to machine micro holes on Ti-6Al-4V alloy. The diameters of the holes were measured and the effects of various parameters were analysed for the variation in taper and diametrical overcut. The experimental results were analysed using analysis of variance approach.

An Experimental Study of the Stability of an Externally Pressurized, Gas-Lubricated Thrust Bearing

1966 ◽  
Vol 33 (1) ◽  
pp. 25-30 ◽  
Author(s):  
L. Licht ◽  
H. G. Elrod
Keyword(s):  
Experimental Study ◽  
Experimental Investigation ◽  
Thrust Bearing ◽  
Accurate Determination ◽  
Experimental Program ◽  
The Subject ◽  
The Stability ◽  
Stability Limits ◽  
Prior Analysis

The subject of this experimental investigation is the phenomenon of self-excited vibrations occurring in externally pressurized, gas-lubricated bearings. The experimental program pursued here is guided by predictions based on prior analysis. An apparatus is designed and instrumented to provide for the variation of governing parameters and for the accurate determination of their critical values. Stability bounds are obtained for a circular thrust bearing and the experimental results are compared and contrasted with previously reported, theoretical stability limits.

Determination of cutting force of roll-formed section in shaped dies-knife guillotine

2020 ◽  
pp. 373-376
Author(s):  
S.V. Povorov ◽  
D.V. Egorov ◽  
D.S. Volgin
Keyword(s):  
Cutting Force ◽  
Cutting Process ◽  
Sheet Blank

The change in cutting force in the cutting process of roll-formed section in shaped dies-knife guillotine is studied. It is established that to calculate the cutting force in shaped guillotine, one can use formulas to determine the cutting force of sheet blank on conventional straight knives guillotine.

An Experimental Investigation of the Efficacy of Lawyers' Letters

2002 ◽  
Vol 21 (1) ◽  
pp. 79-93 ◽  
Author(s):  
Jack L. Krogstad ◽  
Mark H. Taylor ◽  
Maribeth J. Stock
Keyword(s):  
Experimental Study ◽  
Experimental Investigation ◽  
Lower Bound ◽  
Financial Statements ◽  
Law Students ◽  
Potential Loss

This experimental study investigates the efficacy of lawyers' letters in providing auditors with corroborating evidence about litigation contingencies. Fifty second- and third-year law students indicate their willingness to provide auditors with estimates of the likelihoods of unfavorable outcomes and potential damages for two realistic litigation cases. The findings indicate that (1) the potential loss of attorney-client privilege and (2) likelihoods of unfavorable litigation outcomes that approach auditors' lower bound for accrual both may inhibit lawyers' responses to auditors. Overall, these findings raise doubts about the efficacy of this widely utilized auditing procedure and lead to concerns about whether litigation contingencies and corresponding losses may be underreported in financial statements.

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