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Singh, Amrinder Pal
- Wear Characterization of High Temperature Oxidized Ni Based Superalloys
Abstract Views :191 |
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Authors
Affiliations
1 Department of Mechanical Engineering, Desh Bhagat University, Mandi Gobindgarh – 147301, Punjab, IN
2 Department of Mechanical Engineering, University Institute of Engineering and Technology, Panjab University, Sector 25 – 160014, Chandigarh, IN
1 Department of Mechanical Engineering, Desh Bhagat University, Mandi Gobindgarh – 147301, Punjab, IN
2 Department of Mechanical Engineering, University Institute of Engineering and Technology, Panjab University, Sector 25 – 160014, Chandigarh, IN
Source
Indian Journal of Science and Technology, Vol 10, No 25 (2017), Pagination:Abstract
Objectives: Present manuscript deals with the study of wear performance of nickel superalloys namely Superni-76 and Superni750-X, by means of two bodies dry sliding wear method. Methods/Statistical Analysis: The wear performance of the superalloys was noted in as received conditions and after oxidizing the sample at 900°C for 50 hours. Hardened steel balls were used as abrasive body to evaluate the wear volume in each as received and oxidized samples. Findings: The wear volume was calculated with respect to time and sliding distance and graphs were plotted for both the superalloys. The weight change and types of oxides formed after oxidation were identified by XRD and EDX/EDS analysis. The wear surface was also characterised by using FE-SEM/EDS analysis to ascertain the mechanism of wear in the samples. From various characterisation results and observations of volume loss, the effect of oxidation was analysed for these superalloys. Oxidation affects the wear behaviour of nickel based superalloys. The wear mechanism changes due to increase in hardness and brittleness after high temperature exposure. Application/Improvements: It has been found that the oxidation phenomenon leads to the formation of very fine oxide scale on the superalloys. This oxide layer especially in case of Hastelloy-X (Superni-76) was responsible for the improvement in the wear resistance despite of some initial fast volume loss.Keywords
Oxidation, Superalloys, Tribology, Wear.- A Knowledge Based Tool for Damage Free Drilling of Fibre Reinforced Plastics
Abstract Views :223 |
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Authors
Affiliations
1 Dept. of Mech. & Indl. Engg., Indian Institute of Technology, Roorkee, IN
2 Dept. of Mech. Engg., UIET, Panjab University, Chandigarh, IN
1 Dept. of Mech. & Indl. Engg., Indian Institute of Technology, Roorkee, IN
2 Dept. of Mech. Engg., UIET, Panjab University, Chandigarh, IN
Source
Manufacturing Technology Today, Vol 7, No 9 (2008), Pagination: 3-10Abstract
Drilling of Fibre Reinforced Plastics (FRPs) is important to facilitate the assembly operations for geometrically intricate composite products manufactured in parts. The drilling induced damage often results in high rate of rejection and affects the long-term performance of the product with a drilled hole. The aim of the study is to develop a knowledge based tool that could provide a common platform for information regarding damage free drilling of FRP laminates. The code of the program, has been written in Developer C ++. The code developed as a part of this study saves valuable time of the researchers and scientists by providing a common platform for retrieving information regarding the drilling of FRP laminates. The code may further be designed into web-based software that can be used by the engineers and scientists worldwide.- Drilling of Fibre Reinforced Plastic Composites:A Review
Abstract Views :179 |
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Authors
Affiliations
1 Dept. of Mechanical Engg., UIET, Panjab University, Chandigarh, IN
2 Dept. of Mechanical and Industrial Engg., Indian Institute of Technology, Roorkee, IN
1 Dept. of Mechanical Engg., UIET, Panjab University, Chandigarh, IN
2 Dept. of Mechanical and Industrial Engg., Indian Institute of Technology, Roorkee, IN
Source
Manufacturing Technology Today, Vol 7, No 6 (2008), Pagination: 24-30Abstract
This paper presents comprehensive and exhaustive review of research done in drilling of fibre reinforced plastic composites. Decades of research shows that by keeping the thrust force below a critical value the drilling induced damage can be prevented. Researchers have played with feed rate and tool geometry (point angle, helix angle, and chisel edge angle) so as to keep thrust force below the critical limit. Lately, researchers have tried to devise intelligent drilling process in which feed rate is continuously manipulated such that thrust force is always kept in the safe limit that is below critical value. This paper further represents some important directions for minimal drilling induced damage. Gaps in research, where more effort needs to be put in, are also identified towards the end of the paper.- Effects of Welding Variables on Mechanical Properties of FE410WB Steel in SAW
Abstract Views :159 |
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Authors
Affiliations
1 Deptt. of Mech. Engg., UIET, Panjab University, Chandigarh - 160014, IN
2 Deptt. of Mech. & Prod. Engg., G. N. D. E. C., Ludhiana -141006 (Pb.), IN
1 Deptt. of Mech. Engg., UIET, Panjab University, Chandigarh - 160014, IN
2 Deptt. of Mech. & Prod. Engg., G. N. D. E. C., Ludhiana -141006 (Pb.), IN