http://hdl.handle.net/123456789/1005 2026-05-12T11:59:30Z 2026-05-12T11:59:30Z Sharma A Jain V Gupta D. http://hdl.handle.net/123456789/1827 2021-05-14T10:36:22Z 2021-01-01T00:00:00Z

Title: Mathematical Approach on Chipping Volume Estimation Generated During Rotary Ultrasonic Drilling for Float Glass Authors: Sharma A; Jain V; Gupta D. Abstract: The present paper presented a mathematical approach based upon Buckingham pi theorem to estimate the volume of chipping while creating holes by rotary ultrasonic drilling on float glass specimen. The experimental validation is also carried out by performing L9 designed experimental trials at various combinations of drilling parameters. Coordinate measuring machine technique has been deployed to precisely quantify the chipping volume. The microscopic portray is used for chipping assessment. The result shows that the mathematical dimensional analysis is having good conformity with the experimental values. The minimum volume of chipping reported at the optimized parametric combination 4.73 mm3. It is figure out that the spindle speed and feed rate are showing similar trend in experimental and theoretical results. Hence, to enhance the utility of float glass, the researcher�s prime focus is to overcome the propagation of chipping nearby corners of the drilled glass. Drilling of brittle material such as float glass is noteworthy study to investigate. Hence using rotary ultrasonic drilling; float glass is drilled, and the chipping produced at hole edge corners is estimated in form of chipping volume. Also, Buckingham pi theorem mathematical-based model is proposed for chipping volume evaluation.

2021-01-01T00:00:00Z Sharma A Babbar A Jain V Gupta D. http://hdl.handle.net/123456789/1828 2021-05-14T10:36:22Z 2021-01-01T00:00:00Z

Title: Influence of cutting force and drilling temperature on glass hole surface integrity during rotary ultrasonic drilling Authors: Sharma A; Babbar A; Jain V; Gupta D. Abstract: The surface integrity of the machined surface is having a significant impact on the application of the glass and ceramic materials. Surface integrity is of paramount importance to the industries to prevent the loss of useful life of critical components. However, conventional machining processes are unable to fulfill the demands of the present scenario but hybrid machining processes such as rotary ultrasonic drilling process has shown its potential for enhanced surface integrity. Nowadays, researchers are focused on getting superior machined glass quality because of the hardness and esthetic look. Therefore, the authors performed an experimental investigation to estimate the surface roughness while drilling a hole in glass specimen using rotary ultrasonic machining (RUD). It is concluded that the best drilling condition to get the least value of average surface roughness (167.702 nm) is the usage of coolant with 5000 rpm of spindle speed. At 5000 rpm with coolant supply, the cutting force and drilling temperature have been reduced. It is noticed that the least value of drilling temperature is 54.7 �C with a cutting force of 26.65 N. Finally, the improved surface integrity has been achieved noteworthy using RUD process. It would directly enhance the life span of the glass component and increase its functional usage.

2021-01-01T00:00:00Z Singh C Saluja N Sharma R.K. http://hdl.handle.net/123456789/1820 2021-05-14T10:36:21Z 2019-01-01T00:00:00Z

Title: A computation-driven, energy-efficient and hybrid of microwave and conventional drying process for fast gooseberry candy production Authors: Singh C; Saluja N; Sharma R.K. Abstract: The health benefits of Indian gooseberry have resulted in a tremendous growth in its consumption in the form of tasty candy and marmalade prepared by drying process. The candy production process is limited by high drying time and plant size requirements as most of the processing production plants are equipped with conventional drying methods. Hence, the paper presents computational model defining relation between electric field pattern with heating and moisture diffusion in the product simultaneously. The boundary value applies on Maxwell�s equation solution as defined by gooseberry electrical properties. The solution to heat and mass transfer equation offers thermodynamic properties and profiles of gooseberry by microwave heating. The optimised process of moisture diffusion to the surface of gooseberry, followed by conventional heating, dries the sample uniformly and speeds up the process. The established relation offers a valid model for defining time for microwave and conventional heating of fresh gooseberry that takes it as an input and dries gooseberry candy as an output, thereby reducing the time of drying from 17 hours to 0.5 hour. The electromagnetic and thermodynamic results are obtained using simulation and are followed by experimental verification.

2019-01-01T00:00:00Z Singh R Singh S Kumar M. http://hdl.handle.net/123456789/1822 2021-05-14T10:36:21Z 2020-01-01T00:00:00Z

Title: Impact of n-butanol as an additive with eucalyptus biodiesel-diesel blends on the performance and emission parameters of the diesel engine Authors: Singh R; Singh S; Kumar M. Abstract: The rising demands of energy and strict regulations of government associated with toxic gases emitted from utilization of conventional fuels are motivating towards biofuels mainly biodiesel. However, some constraints for employing biodiesel as substitution fuel are higher viscosity, nitrogen oxides (NOx) and carbon dioxide (CO2) emissions. The main intention of this work is to explore biodiesel production and examine the influence of butanol (Bu)-biodiesel (B)-diesel fuels on the diesel engine. In present work, biodiesel (B) is prepared from eucalyptus oil and B20 (20%biodiesel-80%diesel), B100 (neat biodiesel), B20-5Bu (20%biodiesel-75%diesel-5%butanol), B20-10Bu (20%biodiesel-70%diesel-10%butanol) and B20-15Bu (20%biodiesel-65%diesel-15%butanol) prepared fuel samples are tested with varying engine load at 1500 rpm in diesel engine. Approximately 92% yield of biodiesel is obtained with base-catalyzed transesterification method at pre-determined methanol-oil ratio (8:1) and 0.1% (wt) sodium hydroxide (NaOH) catalyst at 65 �C reaction temperature for 3 hrs. It is found that slight increase in brake power (BP) and higher brake specific fuel consumption (BSFC) are attained with butanol-biodiesel-diesel fuels, while brake thermal efficiency (BTE) is decreased. At full load, the results are indicated that 10% and 20% average reduction in carbon mono-oxide (CO); 36.7% and 46% unburnt hydrocarbon (HC) emissions are declined for B20 and B100 respectively. Moreover, the NOx and CO2 emissions are found to be increased than diesel. B20-5Bu, B20-10Bu and B20-15Bu shows 23.55%, 21.9% and 25.16% average decrease in NOx emission at great extent, due to cooling effect of butanol. Finally, it is proclaimed that butanol-diesel-biodiesel can become a promising fuel as same as diesel.

2020-01-01T00:00:00Z