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Chattopadhyaya, Somnath
- ANFIS Model for Interaction of Parameters of Sybmerged Arc Welding Process for Mild Steel Plates of Higher Thickness
Authors
1 Department of Mechanical & Mining Machinery Engineering, Indian School of Mines, Dhanbad, IN
Source
Indian Welding Journal, Vol 43, No 4 (2010), Pagination: 44-52Abstract
The interactions of welding input parameters are studied by an ANFIS model in MATLAB of Submerged Arc Welding process. SAW is a high quality, very high deposition rate welding process commonly used to joint plates. The main objective is to identify the main input factors, to determine the interaction amongst the input factors and finally establish the optimum model for predicting the weld bead parameters that leads to the desired weld quality. This paper proposes an Adaptive Neuro Fuzzy Inference System (ANRS) technique of fuzzy based systems for modelling and simulation of the Submerged Arc Welding process. The performance of the ANFIS model developed is validated by comparing the predicted results with the actual experimental results.
Keywords
SAW, ANFIS, FIS, Submerged Arc Welding, Bad Width, Reinforcement Height.- The Impact of High Temperature on Compressive Strength and Density of Two Types of Granites From India
Authors
1 Department of Mechanical Engineering, Bankura Unnayani Institute of Engineering, Bankura 722146, IN
2 CSIRCentral Institute of Mining and Fuel Research, Nagpur Research Centre (Mining Technology), 17/C Telangkhedi Area, Civil line, Nagpur, Maharashtra 440001, IN
3 Department of Mechanical Engineering, Indian Institute Technology (Indian School of Mines), Dhanbad, Jharkhand, 826001, IN
Source
Journal of Mines, Metals and Fuels, Vol 70, No 3 (2022), Pagination: 141-149Abstract
Physical properties of rocks have significant engineering value. Compressive strength and density of rocks are used in many rock mechanics related studies pertaining to civil and mining activities, stability of the excavations and estimation of the support required. In addition, rocks like granite are used as a building material and are encountered in many civil and infrastructure projects. However, these properties vary with increase or decrease in their temperature. A host of data exists on heat treatment of different rocks. In order to augment such studies and to further the know-how in this discipline, a comprehensive analysis of 56 samples of two types of granites from India was taken up in this study. The tests for compressive strength and density with increase in temperature from 35°C to 600°C were devised and conducted. The results revealed that the behaviour of two groups of the granite varied in a noticeable range on a linear scale. A reduction of 45% to 49% in strength from room temperature to 600°C in the two types of granites points to the loss of strength with increasing temperature. A reduction of 4.3% to 6.3% in density of the samples on heating can be considered to be mild. The rearrangement of grains, loss of water content initially and increase in volume on further heating are considered to be the major reasons for reduction of such physical properties in a linear manner. Colour changes have also observed in the heating process which needs to be explained in future.Keywords
Granite, heat treatment, compressive strength, density.References
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