Root Cause Analysis of Cover Assembly Line of Clutch Plate

Abstract The cause and effect analysis mainly aims to reduce the consumer complaints with failure mode analysis and 8D principle. This work aims to reduce the run out defect percentage in clutch cover plate and most of the defects are produced due to run out. The overall defect observed from run out was usually 60-70%. The height difference between the fingers exceed the specified limit is named as run out defect for 18 finger diaphragm. The major parameters identified for measuring root-cause analysis of clutch plate are diaphragm finger uneven, diaphragm angle, diaphragm bi-cone height and diaphragm hardness. The root-cause defect was reduced by cause and effect method, 8 D analysis and 5W principle. The lean principle is employed in this work to utilize the men, material and resources with maximum efficiency. The lean principle reduces the waste and allows the company to supply the product in time with maximum accuracy.</jats:p

Optimisation of flow and fluid properties of nanofluids to enhance the performance of solar flat plate collector using MCDM technique

In this research work, aluminium oxide (Al2O3), copper oxide (CuO) and gold (Au) nanofluids are prepared with the volume concentrations of 0.1%, 0.2%, 0.3% and 0.4% nanoparticles and tested in solar flat plate collector to estimate the heat transfer characteristics and collector efficiency. The influence of the input variable such as material (type of nanofluid), nanoparticle concentration and the mass flow rate (such as 0.016 kg/s, 0.033 kg/s and 0.05 kg/s) are studied experimentally. With the aim of determining the best possible heat transfer and the collector efficiency with minimum pressure drop, the parameters were optimised using multi-criterion decision-making (MCDM) optimisation techniques. Considering the rate of heat transfer, collector efficiency and drop in pressure are the objective functions, the prime ranks of the optimised variables were obtained using TOPSIS (Technique for Order Preference by Similarity to Ideal Solution) and MOORA (Multi-Objective Optimization on the basis of Ratio Analysis) techniques. Finally, the prediction accuracy of the models and the confidence levels were evaluated and analysed through ELECTRE (ELimination Et Choix Traduisant la REalite) method to create the hypothesis of the experiment. Al2O3 nanofluid with 0.1% and 0.2% volume concentrations of nanoparticle at 0.05kg/s mass flow rate was obtained as best alternatives from others and it shows good agreement between experimental analysis and optimisation techniques. While using, when compared to water, Al2O3 nanofluid with 0.05kg/s containing 0.1% and 0.2% nanoparticle concentrations, the enhancements were found to be 11.25% and 14.45%, respectively, for heat transfer rate; 11.16% and 14.34%, respectively, for collector efficiency; and 22.7% and 37.7%, respectively, for pressure drop across the collector. </jats:p

Experimental investigation on effects of gasoline premixed - Al₂O₃ additive blended fish oil biodiesel fuelled HCCI-DI engine

Abstract A HCCI-DI engine is examined using fish oil bio-fuel at various proportions with neat diesel in DI fuels and petrol as the pilot energy. 20% of petrol is admitted as premixed fuel and the 80% of the charge is injected straight away to chamber at 23°bTDC. The effect of Al2O3 nano additive on DI engine is also investigated. An investigational observation is analysed with DI engine. First, HCCI-DI engine firing is compared at premature stage of combustion. Upto 1.84% improvements in the brake thermal efficiency is witnessed at petrol mixed HCCI-DI engine compared as DI combustion. The blending of Al2O3 nano additive showed 5.88% increase in the performance of the engine. Significant reduction in NOx is observed from the HCCI-DI ignition matched via DI combustion. Fish oil biodiesel fuelled combustion showed decrease in the HC besides CO issues</jats:p

sj-docx-1-pie-10.1177_09544089221150738 - Supplemental material for Optimisation of flow and fluid properties of nanofluids to enhance the performance of solar flat plate collector using MCDM technique

Supplemental material, sj-docx-1-pie-10.1177_09544089221150738 for Optimisation of flow and fluid properties of nanofluids to enhance the performance of solar flat plate collector using MCDM technique by Dharmalingam Ramasamy, Ranjith R, Ramachandran T, Murugapoopathi S and Surendarnath S in Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering</p