N. Venkatachalapathi, S. Sudhakara Babu, A. Ramakrishna Rao
This paper attempts to establish quantitative relationship between output indicators like Total Flow time, Resource utilization, AGV utilization and input variables like part arrival rate, uniform processing times at Machining centers and AGVs and decision rules such as Large remaining capacity, small number busy, cyclical and random rules in a dynamic dedicated FMS. Dummy data are generated and the system is simulated to produce the output indicator for a given set of input variables and decision rules. The simulation results are employed to develop Multiple Regression equations for each...
TC14 ISMQC 2007
· TC14
· 2007
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J. Gren, K. Konkarikoski, R. Ritala
In industrial processes, such as in papermaking, the product quality is measured from end product samples in laboratory. It is a common practice to measure all quality parameters at regular time intervals. However, this is costly and may limit possibilities to measure those quality parameters that would be most important for overall uncertainty management and thus for decision support. This paper show general theory for measurement information dynamics and discusses how we can find the lowest cost measurement schedule satisfying the constraints on uncertainty in quality information. This...
TC14 ISMQC 2007
· TC14
· 2007
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M. M. Bhoomkar, P. B. Likhite , L. G. Navale
Due to technological advancements and globalization, technically perfect, aesthetically attractive, quality products are available in market. To meet expectations of quality and survive global competition, the World Class Manufacturing (WCM) approach is imperative. The small and medium scale printing industries (SMPI) should also be world class, as they are directly related to advertising, packagings and newspaper industries. Printing is the process of uncertainty. Minute change in the process parameters like ink properties, paper quality, machine performance and operator skills may cause...
TC14 ISMQC 2007
· TC14
· 2007
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K. N. Vijaykumar, S. S. Mantha, Arun Kumar
This paper highlights improvement in quality of data produced by measuring instruments. If measuring instruments itself is not producing the accurate data, analysis of manufacturing process will no longer be meaningful. All measurement systems and equipments have some degree of measurement error or uncertainty. Under such circumstances it has become important to understand the magnitude of the variability the instrument causes and how to bring uncertainty within reasonable limits. In order to determine the amount of variation, the thorough study of capability of measuring systems is of prime...
TC14 ISMQC 2007
· TC14
· 2007
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P. P. Shah, R. L. Shrivastava, D. J. Tidke
In a fast changing world, competitive advantage comes through operational efficiency. Operational efficiency drives profit, return on investment, and ultimately, shareholder value. It is companies that can bring well-designed new products to market quickly, operate efficiently with minimal overhead, and produce high-quality products with minimal scrap or rework that will succeed and grow. A critical factor in operational efficiency is the ability to design and build high-quality products. Six Sigma has been recognized globally as a structured statistical quality improvement process leading...
TC14 ISMQC 2007
· TC14
· 2007
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T. S. R. Murthy
In many precision machines and equipment, there are 2 or 3 axes intersecting at a point as per the drawing theoretically. One example is gyro spin axes construction. The other examples are N/C Machine tools with spindle and table and space equipment. In all of the above examples the axes are meeting at a common point. Presently each axis is measured separately for its straightness or perpendicularity with some surface. Though the axes can be measured separately, one cannot say to what extent they are meeting at a common point. And there are no standards to specify this error. As there are no...
TC14 ISMQC 2007
· TC14
· 2007
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V. N. Borikov
This paper presents both a tool and a method for control of ceramic coating process by high pulse current in electrolytes. The method is based on the use of symmetric trapezoidal voltage pulse power source for oxidation, running volt-ampere characteristics and defining active and capacitive currents what allows to estimate the coating quality.
TC14 ISMQC 2007
· TC14
· 2007
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P. M. M. S. Sarma, L. Karunamoorthy
The present study proposed the analysis of cutting forces of GFRP pipes using PCD tool. The filament wound tubes with different fibre orientations are prepared for the purpose of a work specimen. The process parameters used are cutting speed, feed, depth of cut and fibre orientation. The tool forces are measured using KISTLER Dynamometer. The effect of process parameters on Cutting, Thrust and Feed forces is evaluated and the optimum cutting conditions for minimizing the tool forces are evaluated which result in high quality machined surfaces. Second order models have been developed between...
TC14 ISMQC 2007
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· 2007
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A. V. Kale, H. T. Thorat
Commonly used pipe bending mechanisms are studied in the small-scale industries. Defects introduced in the pipe due to bending on these mechanisms are observed and reasons behind these defects are studied. Ovality is a main defect in the entire pipe bending techniques. To measure the ovality, experimentation is carried out on the existing compression bender. Out of various sizes and materials available, ten pipes of three different materials with variable thickness are selected. Their maximum and minimum diameters are checked before bending. From these diameters, initial ovality and...
TC14 ISMQC 2007
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· 2007
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Albert Weckenmann, Peter-Frederik Brenner
Design of Experiments (DoE) is mainly used during process planning, manufacturing and assembly. When the task of a DoE project is to analyse and optimize complex products or processes, the phase system analysis will become a crucial step in the DoE approach. The paper combines the use of fuzzy logic and multi criteria decision making methods with DoE and points out an approach for system analysis of products and processes. The system analysis approach can be integrated into software for DoE.
TC14 ISMQC 2007
· TC14
· 2007
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