This paper proposes a novel approach for optimization of process parameters in CO2 robot welding. Quality of weld mainly depends on mechanical properties of the weld metal and heat affected zone (HAZ), which is in direct relation to the type of welding and its process parameters. Porosity, spatter and lack of fusion are greatly influenced by welding process parameters i.e. welding speed, welding current, shielding gas flow rate, voltage, contact tip, work distance, type of shielding gas etc. and also it plays a major role in determining the mechanical properties of the weld such as tensile strength, hardness etc. In this paper, effect of the various process parameters have been studied on welding of EDD513 (EN2) sheet using robot welding (MIG) process with copper coated mild steel wire of 1.2mmϕ. A set of experiments have been performed to collect the data using Taguchi’s designof experiments approach. The mathematical models have been created based on the data recorded.
This paper endeavours the detailed work of Value Engineering (VE) which can be implemented to any kind of product(s) in order to optimize the value of particular product. A Case study has been chosen from a pump industry for the product of 1.0HP centrifugal pump. During the observation period the product’s mandatory point was observed that the cost of pump is high due o the usage of expensive material, and more material usage in the product. In order reduce the cost without sacrificing the quality of the product we have selected few components which is having great scope to achieve the good customer feedback in performance wise. The components are impeller, main and auxiliary winding, adaptor, end cover. The value engineering technique has been applied on the components to reduce the cost. Material modification for Impeller has been suggested, design changes are suggested for adaptor, end cover and coil winding turns reduction modification is suggested for Main and Auxiliary Winding and thereby the cost reduction of the product has been achieved through Value Engineering technique.
Health care industry which is considered as next trillion-dollar industry, have lots of scopes for the application of Lean Supply chain and Smart accounting. Lean management in Health service industry has become very common now days. Smart Accounting using software packages helps to reduce the lead time and storage costs. Software packages for Accounting helps to make the processes more lean compared to traditional methods or using Excel spreadsheet. Lean management helps in reducing the different non value added activities, increase the ease of use, reduce the lead time and other costs. The paper addresses an inventory management model for running a pharmacy where the demand rate of the customers increases with the volume of the initiatives of the Prescriber. In this model, the deterioration of the product varies depending on on-hand inventory. The volume of sales is a control variable. It is dependent on on-hand inventory and vice versa. The profit function of the pharm is formulated by the trading of inventory costs, purchasing costs, losses due to deterioration and sales team initiative costs, considering inflation and the time value of the monetary cost and profit parameters. In this paper we have taken a pharmacy in Kannur, a city of Kerala, and study how Tally software has impact on inventory management and Accounting. We also see how lean management techniques are integrated in this ERP software module of Tally.
K. Sadesh*, S. Janaki, A. P. Senthil Kumar, H. Adarsh, Ansil Rahman.
Polymer electrolyte membrane (PEM) fuel cells are most suited for daily use applications. Advancements in PEM fuel cells are being carried out by many research and development activities over the years. But water management is the major problem in PEM fuel cells which leads to reduced performance and durability. Hence this work deals with effective water management. To examine water removed in PEM fuel cells of 25cm2 active area, experiment was conducted with various combinations of serpentine and parallel flow channels at anode and cathode, of rib to channel ratio of 2:2. Additionally the effect of slope on cathode side flow channel with an arbitrary slope of 1/25 was studied. The different combinations of flow channels which were used at anode and cathode are parallel without slope and parallel with slope, serpentine and serpentine, serpentine and parallel with slope respectively. By activation conditioning and experimentation, it is evident that inducing slope at the side of cathode increases the water removal rate and thereby paving way for performance enhancement. Therefore, by effective water removal from the fuel cell subtle equilibrium is maintained between dehydration and flooding and so the performance of PEM fuel cell is increased.
A new sensitive, specific, linear, precise and accurate RP-HPLC method was developed and validated for estimation of Rosuvastatin calcium in Bulk and Tablet dosage form. An isocratic, reversed phase HPLC method was developed. Shimadzu shim pack C18 (250mm x 4.5µm, x 5 µ) column. Shimadzu Prominence-I LC-2030C plus equipped with Auto sampler as the instrument model. Mobile phase consists of mixture of 0.02M Phosphate buffer pH 2.5: Methanol: Acetonitrile in the ratio (50:20:30 v/v) at a flow rate of 1.0ml /min with injection volume of 10µL. UV detection was performed at 242nm. The Linearity was established for Rosuvastatin calcium in the range of 5-30µg/ml with correlation coefficient of 0.9998. LOD and LOQ were found to be 0.030µg/ml and 0.093µg/ml respectively. Retention time of Rosuvastatin calcium were found to be 3.42mins. The % Recovery was found to be 99.93-101.28 and %RSD was found with in ± 2. The method has been validated according to ICH guidelines for linearity, precision, accuracy, robustness, ruggedness, LOD and LOQ. The developed validated method was successfully applied for reliable quantification of Rosuvastatin calcium in bulk and pharmaceutical dosage form.