Manufacturing Technology Today

B. Latha Shankar ¹, S. Basavarajappa ², Rajeshwar S. Kadadevaramath ¹, R. Vezhavendhan ³

Affiliations
1 Dept. of Industrial Engg. & Management, Siddaganga Institute of Technology, Tumkur, IN
2 Dept. of Studies in Mechanical Engg., University BDT College of Engg., Davangere, IN
3 VIT University, Vellore, IN

Abstract

In the traditional inventory systems, demand and lead time data are assumed to be available and follow some probability distribution mostly normal. But in reality supply chain is dynamic in nature and associated with lots of uncertainties. In this paper an attempt is made to model (Q,r) (optimum order quantity, reorder point) policy in uncertain supply chain environment. Imprecise demand is modeled using fuzzy set theory and an iterative procedure is developed to calculate optimum order quantity, reorder point and total cost of maintaining inventory. The iterative procedure is demonstrated using a numerical example and obtained numerical results are compared with their crisp counterpart.

Keywords

Continuous Review, (Q,R) Policy, Fuzzy Demand, Triangular Fuzzy Number, Extension Principle.

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S. Basavarajappa ¹, G. Chandramohan ², Ajith G. Joshi ¹

Affiliations
1 Dept. of Studies in Mechanical Engg., University BDT College of Engg., Davangere, IN
2 Karpagam College of Engg., Coimbatore, IN

Abstract

An attempt has been made in the present investigation to study the effect of graphite incorporation in Al2219/15SiC_p composite. This study evaluates the influence of independent parameters such as cutting speed and feed rate on Thrust force and surface roughness. Taguchi design of experiments is used to collect the data in a controlled way and a linear regression model was developed. This paper aims to model thrust force and surface roughness with drilling parameters using a statistical approach. The results obtained in this work enable influence and significance of various parameters on drilling characteristics of Al2219/15SiC_p-graphite to be better understood. It was found that SiC_p-Gr reinforced composites exhibit less thrust force but detrimental effect on surface roughness compared to SiC_p composite. Feed rate is the most significant factor affecting the drilling parameters followed by cutting speed.

Keywords

Drilling, Metal Matrix Composites, Al/SiC_p-Gr, Surface Roughness, Taguchi Technique.

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