Analytical Sensitivity Studies of the Optimum Machining Conditions for Milling, Drilling, Reaming, and Tapping

1973 ◽  
Vol 95 (1) ◽  
pp. 312-316 ◽  
Author(s):  
D. S. Ermer ◽  
B. V. Shah
Keyword(s):  
Analytical Method ◽  
Single Point ◽  
Minimum Cost ◽  
Sensitivity Analyses ◽  
Analytical Sensitivity ◽  
Turning Process ◽  
Machining Conditions ◽  
Sensitivity Studies ◽  
Maximum Production Rate

An analytical method for sensitivity studies in the determination of the optimum machining conditions for the single point turning process was previously presented by Ermer and Faria [4]. In the present paper, an analytical method for sensitivity studies in the determination of the optimum machining conditions for milling, drilling, reaming and tapping is presented, assuming that the optimizing criterion is minimum cost or maximum production rate. A nomogram is given which provides a simple and efficient way to carry out quantitative sensitivity analyses.

Optimization of Abrasive Life in Ultrasonic Machining

1985 ◽  
Vol 107 (4) ◽  
pp. 361-364 ◽  
Author(s):  
S. W. Dharmadhikari ◽  
C. S. Sharma
Keyword(s):  
Production Rate ◽  
Minimum Cost ◽  
Work Conditions ◽  
Ultrasonic Machining ◽  
Objective Functions ◽  
Profit Rate ◽  
Rate Functions ◽  
Sensitivity Studies ◽  
Maximum Production Rate

Based on two models of material removal in ultrasonic machining, developed in an earlier work, conditions for optimum abrasive life for the objective functions of minimum cost per unit volume of material removed, maximum production rate and maximum profit rate are presented. A simple nomogram is designed for the determination of optimum abrasive life. Sensitivity studies of production rate and profit rate functions are presented. An illustrative example highlights the application of the analysis.

Maximum Profit as the Criterion in the Determination of the Optimum Cutting Conditions

1966 ◽  
Vol 88 (4) ◽  
pp. 435-442 ◽  
Author(s):  
S. M. Wu ◽  
D. S. Ermer
Keyword(s):  
Production Rate ◽  
Cutting Speed ◽  
Minimum Cost ◽  
Practical Applications ◽  
Maximum Profit ◽  
Optimum Speed ◽  
Optimum Cutting ◽  
Maximum Production Rate ◽  
Selection Of

Maximum profit is an appropriate criterion for the selection of the optimum machining conditions rather than the conventional criteria of minimum cost or maximum production rate. A simple example is presented to illustrate the determination of the maximum-profit cutting speed by application of a fundamental economic principle that maximum profit occurs at the production rate where the marginal revenue equals the marginal cost. The effects of the demand function, feed, and cost and time parameters on the determination of the maximum-profit cutting speed are analyzed. Emphasis is given to the investigation of a range of optimum cutting speeds, instead of the theoretical optimum speed, for practical applications.

LUMINESCENT DETERMINATION OF SUGAR IN NATURAL HONEY

2020 ◽  
Vol 0 (4) ◽  
pp. 29-32
Author(s):  
B.M. GAREEV ◽  
◽  
A.M. ABDRAKHMANOV ◽  
G.L. SHARIPOV ◽  
◽  
...  
Keyword(s):  
Quantum Dots ◽  
Laboratory Test ◽  
Aqueous Solutions ◽  
Analytical Method ◽  
Sugar Content ◽  
Carbon Quantum Dots ◽  
Photoluminescence Intensity ◽  
Sucrose Content ◽  
Natural Honey

The photoluminescence of carbon quantum dots synthesized from natural honey and mixtures of honey and sugar has been studied. An increase in the sugar content leads to a decrease in the photoluminescence intensity without changing the shape of the luminescence spectrum of these quantum dots aqueous solutions, which is associated with a decrease in the yield of their synthesis in the sugar presence. The discovered effect can be used to detect sugar in honey. When examining five different market samples of flower honey using this method, two of them showed a significant decrease in the photoluminescence intensity. A laboratory test for compliance with GOST 19792-2017 Standard requirements established an excess of the sucrose content in these samples. Luminescent determination of sugar in honey does not require complicated equipment and can be used to develop a new analytical method for determining the sugar content in counterfeit natural honey.

scholarly journals Rapid Analytical Method for the Determination of 220 Pesticide with Their Isomers by GCMS-TIC

2021 ◽  
Author(s):  
Mohamed H. EL-Saeid ◽  
Ashraf S. Hassanin ◽  
Abdulqader Y. Bazeyad ◽  
Norhan M. Hamza
Keyword(s):  
Analytical Method

Green analytical method for the determination of sofosbuvir, ledipasvir, ribavirin and complex silymarin flavonoids simultaneously in biological fluids

2021 ◽  
Vol 164 ◽  
pp. 105964
Author(s):  
Amira F. El-Yazbi ◽  
Yasmine Khalifa ◽  
Mohammed A.W. Elkhatib ◽  
Ahmed F. El-Yazbi
Keyword(s):  
Analytical Method ◽  
Biological Fluids
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