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Murugan, A.
- Development of Empirical Relationships to Predict Strength of Powder Metallurgically Produced Pure Aluminium and Pure Copper Diffusion Bonded Bimetallic Joints
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Authors
Affiliations
1 Department of Mechanical Engineering, Pondicherry Engineering College, Puducherry 607 402, IN
2 Centre for Materials Joining and Research (CEMAJOR), Department of Manufacturing Engineering, Annamalai University, Annamalai Nagar, 608 002 Tamil Nadu, IN
1 Department of Mechanical Engineering, Pondicherry Engineering College, Puducherry 607 402, IN
2 Centre for Materials Joining and Research (CEMAJOR), Department of Manufacturing Engineering, Annamalai University, Annamalai Nagar, 608 002 Tamil Nadu, IN
Source
Indian Welding Journal, Vol 48, No 3 (2015), Pagination: 33-45Abstract
In the present study, pure aluminium (Al) and pure copper (Cu) plates prepared by powder metallurgy (P/M) method were bonded by diffusion bonding technique. From the literature, it was identified that the predominant diffusion bonding process parameters such as bonding temperature, holding time and bonding pressure influence the shear and bonding strength of diffusion bonded joints. In this investigation an attempt was made to develop empirical relationships to predict the shear strength and bonding strength of diffusion bonded bimetallic joints of pure Cu/AI incorporating the above parameters using statistical tools such as design of experiments, analysis of variance and regression analysis. The developed empirical relationships can be used to predict the strength of Cu/AI bimetallic joints at 95% confidence level.Keywords
Pure Copper, Pure Aluminium, Powder Metallurgy, Diffusion Bonding, Design of Experiments, Analysis of variance and Regression Analysis.
- Development of Empirical Relationships to Predict Strength of P/M Sintered Pure Copper and Pure Nickel Diffusion Bonded Bimetallic Joints
Abstract Views :296 |
PDF Views:1
Authors
Affiliations
1 Dept. of Mechanical Engineering, Pondicherry Engineering College, Puducherry, IN
2 Centre for Materials Joining and Research (CEMAJOR), Department of Manufacturing Engineering, Annamalai University, Annamalai Nagar, Tamil Nadu, IN
1 Dept. of Mechanical Engineering, Pondicherry Engineering College, Puducherry, IN
2 Centre for Materials Joining and Research (CEMAJOR), Department of Manufacturing Engineering, Annamalai University, Annamalai Nagar, Tamil Nadu, IN
Source
Manufacturing Technology Today, Vol 14, No 2 (2015), Pagination: 11-19Abstract
In the present study, pure copper (Cu) and pure nickel (Ni) plates prepared by powder metallurgy (P/M) method were bonded by diffusion bonding technique. From the literature, it was identified that the predominant diffusion bonding process parameters such as bonding temperature, holding time and bonding pressure influence the shear and bonding strength of diffusion bonded joints. In this investigation an attempt was made to develop empirical relationships to predict the shear strength and bonding strength of diffusion bonded bimetallic joints of pure Cu/Ni incorporating the above parameters using statistical tools such as design of experiments, analysis of variance and regression analysis. The developed empirical relationships can be used to predict the strength of Cu/Ni bimetallic joints at 95% confidence level.Keywords
Powder Metallurgy, Diffusion Bonding, Design of Experiments, Analysis of Variance and Regression Analysis.- Enhanced Emission Properties of Carbon Nanoparticles by Hydrothermal Method
Abstract Views :280 |
PDF Views:1
Authors
Affiliations
1 Ultra Precision Engineering Department, Central Manufacturing Technology Institute, Tumkur Road, Bangalore, IN
2 Laboratory of Molecular Imaging, Department of Biomedical Science, CHA University, 605-21 Yoeksam 1-dong, Gangnam-gu, seoul-135-081, KR
3 Central Manufacturing Technology Institute, Tumkur Road, Bangalore, IN
1 Ultra Precision Engineering Department, Central Manufacturing Technology Institute, Tumkur Road, Bangalore, IN
2 Laboratory of Molecular Imaging, Department of Biomedical Science, CHA University, 605-21 Yoeksam 1-dong, Gangnam-gu, seoul-135-081, KR
3 Central Manufacturing Technology Institute, Tumkur Road, Bangalore, IN
Source
Manufacturing Technology Today, Vol 13, No 3 (2014), Pagination: 20-23Abstract
In the report presents on a multi-color fluorescent and water soluble carbon nanoparticle (CNPs) were fabricated by a facile one-step hydrothermal method by using L-Ascorbic Acid as a carbon source. Height distribution of Atomic Force Microscope (AFM) image revels CNPs are monodisperse having average size of 5.0 nm with narrow distribution. Raman analysis shows, as synthesized CNPs having sp2 hybridization of carbon having graphite crystalline structure. The CNPs could emit bright and colorful photoluminescence (PL) which covering the entire visible to Near Infrared (NIR) spectral range. Moreover, these particles also had excellent up conversion fluorescent properties over the range.Keywords
Nanoparticles, Carbon, Multi-Color Fluorescence, Hydrothermal Method, Carbonization.- Developing Diffusion Bonding Windows for Joining Powder Metallurgically Produced Pure Aluminium and Pure Copper
Abstract Views :625 |
PDF Views:4
Authors
Affiliations
1 Department of Mechanical Engineering, Pondicherry Engineering College, Puducherry 607 402, IN
2 Centre for Materials Joining and Research (CEMAJOR), Department of Manufacturing Engineering, Annamalai University, Annamalai Nagar 608 002, IN
1 Department of Mechanical Engineering, Pondicherry Engineering College, Puducherry 607 402, IN
2 Centre for Materials Joining and Research (CEMAJOR), Department of Manufacturing Engineering, Annamalai University, Annamalai Nagar 608 002, IN
Source
Indian Welding Journal, Vol 47, No 1 (2014), Pagination: 43-56Abstract
In this investigation, pure aluminium (Al) and pure copper plates manufactured by powder metallurgy (P/M) technique were bonded by diffusion bonding. Joining of these materials by fusion welding is difficult because of the formation oxide films and brittle intermetallic compounds in the bond region which affect the quality of bonds. However, diffusion bonding is a suitable process to join these materials without much difficulties. In this investigation, an attempt was made to develop the diffusion bonding windows to join pure Al with pure Cu plates produced by P/M technique using different combinations of process parameters such as bonding temperature, bonding pressure and holding time The quality of bonds was checked by the microstructure analysis. Diffusion bonding windows (DBW) presented in this paper will act as reference maps for selecting appropriate process parameters to join pure Al with pure Cu plates fabricated by P/M technique.Keywords
Pure Aluminium, Pure Copper, Powder Metallurgy, Diffusion Bonding Window.- Weight-Length Relationship and Fulton's Condition Factor of the Alligator Pipefish, Syngnathoides biaculeatus (Bloch, 1785) from the Southeast Coast of India
Abstract Views :442 |
PDF Views:174
Authors
Affiliations
1 Aquaculture Laboratory, CSIR-National Institute of Oceanography, Goa 403 004, IN
2 Department of Marine Sciences, Goa University, Goa 403 206, IN
3 Department of Marine and Coastal Studies, Madurai Kamaraj University, Pudumadam 623 524, IN
1 Aquaculture Laboratory, CSIR-National Institute of Oceanography, Goa 403 004, IN
2 Department of Marine Sciences, Goa University, Goa 403 206, IN
3 Department of Marine and Coastal Studies, Madurai Kamaraj University, Pudumadam 623 524, IN
Source
Current Science, Vol 113, No 08 (2017), Pagination: 1605-1609Abstract
The present study provides information on weight- length relationship (WLR) and Fulton's condition factor (K) of the alligator pipefish, Syngnathoides biaculeatus (Bloch, 1785) sampled from Palk Bay (PB) and Gulf of Mannar (GoM) regions, southeast coast of India. The pooled estimate for the parameter b of the WLR for S. biaculeatus (n = 217) was determined to be 1.75, indicating the negative allometric growth pattern (b < 3). The K values ranged from 0.65 to 1.35 (pooled, 0.84) and from 0.68 to 1.27 (pooled, 0.85) for populations of S. biaculeatus collected from PB (n = 120) and GoM (n = 97) respectively. The results may help address the concerns of conservation of S. biaculeatus in the wake of habitat loss and/or incidental by-catch.Keywords
Allometric Growth Pattern, Condition Factor, Population biology, Syngnathoides Biaculeatus, Weight–Length Relationship.Full Text
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