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Chennakesava Reddy, A.
- Matrix Al-Alloys for Silicon Carbide Particle Reinforced Metal Matrix Composites
Abstract Views :570 |
PDF Views:777
Authors
Affiliations
1 Department of Mechanical Engineering, JNT University College of Engineering, Hyderabad–515002, AP, IN
1 Department of Mechanical Engineering, JNT University College of Engineering, Hyderabad–515002, AP, IN
Source
Indian Journal of Science and Technology, Vol 3, No 12 (2010), Pagination: 1184-1187Abstract
The material selection criteria involve the requirement of high strength and good corrosion resistance aluminum alloys for the matrix materials. The mechanical properties have been determined for different metal matrix composites produced from Al 6061, Al 6063 and Al 7072 matrix alloys reinforced with silicon carbide particulates. The yield strength, ultimate strength, and ductility of Al/SiC metal matrix composites are in the descending order of Al 6061, Al6063 and Al 7072 matrix alloys. Mg has improved the wettability between Al and SiC particles by reducing the SiO2 layer on the surface of the SiC. The fracture mode is ductile in nature.Keywords
Aluminum Alloys, Silicon Carbide, Matrix Composites, Fracture ModeFull Text
References
- Chennakesava Reddy A (2003) Studies on fracture behaviour of brittle matrix and alumina trihydrate particulate composites. Ind. J. Engg. Materials Sci. 9(5), 365-368.
- Chennakesava Reddy A and Sundararajan S (2005) Influences of ageing, inclusions and voids on the ductile fracture mechanism of commercial Al-alloys. J. Bull. Material Sci. 28(1), 101-105.
- Qu S, Geng L and Han J (2007) SiC/Al composites fabricated by modified squeeze casting technique. J. Materials Sci. Technol. 23(5), 641-644.
- Rohatgi P, Asthana R and Yarandi E (1990) Solidification of metal matrix composites. In: Minerals Metals Materials Soc. pp:51-75.
- Seleznev ML, Seleznev IL, Cornie JA, Argon AS and Mason RP (1998) Effect of composition, particle size and heat treatment on the mechanical properties of Al- 4.5wt.%Cu based alumina particulate reinforced composites, SAE international congress and exposition, Detroit, MI, Feb 23-26, Paper no. 980700.
- Zhou W and Xu ZM (1997) Casting of SiC reinforced metal matrix composites. J. Materials Proc. Technol. 63, 358-363.
- Zlaticanin B, Filipovic M, Valcic A, Aleksic R, Nikolic S, Radonjic B and Bosnjak B (2004) The effect of magnesium and titanium addition on the microstructure and properties of as-cast Al-5%Cu alloys. Materiali in Tehnologije. 38, 1-2.
- Evaluation of Process Parameters on Cutting Forces and Heat Generation in High-Speed End Milling of Al-Si-Mg-Fe Alloy
Abstract Views :177 |
PDF Views:0
Authors
Affiliations
1 Dept. of Mechanical Engg., Mahatma Gandhi Institute of Technology, Hyderabad, IN
2 JNTU College of Engineering, Hyderabad, IN
1 Dept. of Mechanical Engg., Mahatma Gandhi Institute of Technology, Hyderabad, IN
2 JNTU College of Engineering, Hyderabad, IN
Source
Manufacturing Technology Today, Vol 8, No 6 (2009), Pagination: 21-29Abstract
In this paper, high-speed end milling of Al-Si-Mg-Fe alloy has been carried out. Straight flute end milling cutters (PCD) and high-pressure coolant were used for high-speed end milling of the Al-Si-Mg-Fe alloy materials. The cutting force depends upon the cutting speeds, depth of cuts and feed rates. The cutting temperature (heat generation in the Al-Si-Mg-Fe alloy) increases with an increase in the depth of cut and feed rate and decreases with an increase in the cutting speed. This behavior can be attributed to the precipitation hardening and thermal stability in the alloy. The distortion of the workpiece is not affected by the high-speed machining. The Al-Si-Mg-Fe alloy gives curled or easily broken chips.
- An Experimental Investigation of Shielded Metal Arc Welding Processes on Duplex Stainless Steel to Control and correction of Distortion in Weldments
Abstract Views :118 |
PDF Views:0
Authors
Affiliations
1 Deptt. of Mechanical Engineering, JNTUH College of Engineering, Hyderabad, Kukatpally, IN
1 Deptt. of Mechanical Engineering, JNTUH College of Engineering, Hyderabad, Kukatpally, IN
Source
International Journal of Engineering Research, Vol 5, No SP 2 (2016), Pagination: 421-426Abstract
The present work deals with optimization of Shielded Metal Arc Welding process on Duplex Stainless steel (DSS 2205). Welding is an important technology in Duplex Stainless steel alloy application where the quality control is too important. Taguchi L9 orthogonal array method was employed to optimize the welding process parameters of DSS 2205 weld for minimizing the angular distortion after weld and improving equal percentage of ferrite and austenite content in weld metal. Four variable welding parameters and their three levels were selected and design of experiment (DOE) was implemented as per Taguchi L9 array. Descriptions of angle of deviation measurement techniques and data analysis are presented. The present investigation is to find out the best influence of welding current, Welding Speed, Welding Position and filler material on angular distortion.Keywords
Shielded Metal Arc Welding, Angular Distortion, Taguchi Technique, Duplex Stainless Steel.Full Text
- Evaluation of Resonant Conditions Causing High Cycle Fatigu in Bladed-disk Assemblies of Turbomachines Using Modal Analysis
Abstract Views :154 |
PDF Views:0
Authors
Affiliations
1 Department of Mechanical Engineering, JNTU College of Engineering (Autonomous), Anantapur, IN
1 Department of Mechanical Engineering, JNTU College of Engineering (Autonomous), Anantapur, IN
Source
Manufacturing Technology Today, Vol 5, No 8 (2006), Pagination: 5-10Abstract
Modal testing of bladed-disk assemblies is used to Identify the critical natural frequencies and mode shapes for avoiding the resonant conditions that cause high cycle fatigue (HCF) leading to premature blade and disk failures. In order to obtain the high-quality modal data necessary for accurate modal identification, experience plays a major role In understanding the strengths and weaknesses associated with the variety of testing techniques. Choices such as pre-test bladed-disk preparation, modal excitation driving point location, hammer versus shaker force excitation methods, shaker driving signal approaches, accelerometer type and location, and windowing are all important aspects that must be considered when testing specific bladed-disk configurations. Modal analysis techniques Including extraction of harmonic content and use of interference diagrams for identification of resonance conditions are presented.- Dynamic Trajectory Planning of Robot Arms
Abstract Views :171 |
PDF Views:0
Authors
Affiliations
1 Department of Mechanical Engineering, JNTU College of Engineering, Kukatpally, Hyderabad-500072, IN
2 JNT University, Kukatpally, Hyderabad-500072, IN
3 Department of Mechanical Engineering, National Institute of Technology, Warangal-506004, IN
1 Department of Mechanical Engineering, JNTU College of Engineering, Kukatpally, Hyderabad-500072, IN
2 JNT University, Kukatpally, Hyderabad-500072, IN
3 Department of Mechanical Engineering, National Institute of Technology, Warangal-506004, IN
Source
Manufacturing Technology Today, Vol 3, No 6 (2004), Pagination: 15-18Abstract
It is well known that trajectory planning for robots with many degrees of freedom is a complex task. This paper presents a new method for on-line trajectory planning for robotic arms in dynamic environments. The method presented in this paper avoids local minima by using a two-stage framework. The arms react to dynamic environments using a local and reactive planning method restricted to a subset of its configuration space. Since the subset has few degrees of freedom the computational cost of the on-line stage is very low. An off-line stage chooses the subset of the configuration space that minimizes the probability of blockades and inefficient motions.- An Investigation of Mechanical and Sliding Wear Behavior of ABS/Si3N4 Nanoparticles Fabricated by an Injection Molding
Abstract Views :281 |
PDF Views:0
Authors
Affiliations
1 Department of Mechanical Engineering, JNTUH College of Engineering, Hyderabad, Telangana, IN
1 Department of Mechanical Engineering, JNTUH College of Engineering, Hyderabad, Telangana, IN
Source
Manufacturing Technology Today, Vol 18, No 12 (2019), Pagination: 18-24Abstract
In this research work, the Polymer composites of Acrylonitrile - Butadiene -Styrene (ABS) and filler material of Si3N4nanoparticles made using an injection molding machine by varying filler content of Si3N4. During the tensile test, it observed that the tensile characteristics of the composite enhanced by adding Si3N4 nanoparticles and also observed that hardness of the composite enhanced during the Vickers microhardness test. During the study of scanning electron microscopic analysis, It observes that the fracture surface on the specimen after tensile and wear tests. Wear properties of the composite are evaluated using different filler content, load conditions, speed, and sliding distances. Wear properties of the composite are mainly affected by load conditions and sliding distance.Keywords
ABS, Nano Si3N4 , Tensile, Hardness, Wear, SEM.References
- Divakar, H; Nagaraja, R; Puttaswamaiah, S; Guruprasad, H: Mechanical characterization of thermoplastic ABS/glass fiber reinforced polymer matrix composites, ‘Int. J. of Engineering Research & Technology’, vol. 4, 2015, 1127-1131.
- Panneerselvama, T; Kandavela, TK; Raghuramana, S: Experimental Investigations on Tribological Behaviour of Alumina Added Acrylonitrile Butadiene Styrene (ABS) Composites, ‘Tribology in Industry’, vol. 38, 2016, 338-346.
- Kamaljit, Boparai; Rupinder, Singh; Harwinder, Singh: Comparison of tribological behavior for Nylon6-Al-Al2O3 and ABS parts fabricated by fused deposition modeling, ‘Virtual and Physical Prototyping’, vol. 10, 2015, 59-66.
- Sudeepan, J; Kumar, K; Barman, TK; Saho, P: Study of tribological properties of ABS / CaCO3 polymer composites using Taguchi method, ‘IOSR Journal of Mechanical and Civil Engineering’, 2014, 38-42.
- Reddy, AC: Characterization of Mechanical and Tribological Behavior of (Nylon 6 + Graphite + Teflon) Nano Particulate Composite, Application Perspective, 'Int. J. Scientific & Eng.Res.’, vol. 6, no. 4, 2015, 378-386.
- Suresh, B; Chandramoha, G; Prakash, JN; Balusamy, V ; Sankaranarayanasamy, K: The Role of Fillers on Friction and Slide Wear Characteristics in Glass-Epoxy Composite Systems, ‘Journal of Minerals & Materials Characterization & Engineering’, vol. 5, 2006, 87-101.
- Chennakesava, Reddy, A: Evaluation of Mechanical Behavior of Al-Alloy/Sic Metal Matrix Composites Concerning Their Constituents Using Taguchi Techniques, ‘i-manager’s Journal on Mechanical Engineering‘, vol. 1, 2011, 31-41.
- Chennakesava, Reddy, A; Reddy, VK: Influence of Matrix Alloy and Si3N4 Nanoparticle on Wear Characteristics of Aluminum Alloy Composites, ‘4th International Conference on Modern Materials and Manufacturing, Chennai, India’, 2011, 324-328.
- Shiva, Kumar, K; Chennakesava, Reddy, A: Mechanical and Wear Behavior of ABS/BN Polymer Composites, 'International Journal of Engineering Science and Technology' vol. 10, 2018, 172-180.
- Mohammed, Y; Abdellah; Hesham, Fathi, I; Ayman, MM; Abdelhaleem; Montasser, Dewidar: Mechanical Properties and Wear Behavior of a Novel Composite of Acrylonitrile– Butadiene–Styrene Strengthened by Short Basalt Fiber, ‘Journal of Composites Science’ vol. 34, 2018, 1-12.
- Kotiba, Hamad; Mosab, Kaseem; Fawaz, Deri: Preparation and Characterization of Binary and Ternary Blend with Poly (Lactic Acid), Polystyrene and acrylonitrile-Butadiene-Styrene, ‘Journal of Biomaterials and Nanobiotechnology’, vol. 3, 2012, 405-412.
- Praveen, RN; Murali, D; Sandesh, S; Nayak: Tribological Characteristics of Acrylonitrile-Butadiene-Styrene (Abs) Thermoplastic Composites, ‘Int. J. Mech. Eng. & Rob’, vol. 2, 2013, 361-372.
- Nasuha, Sa’ud; Mustaffa, Ibrahim; Mohd, Halim, Irwan, Ibrahim; Syed, Masood; Mostafa, Nikza: Flexural properties of Copper-ABS in metal injection molding process for FDM Feedstock, ‘International Journal of Current Engineering and Technology’, vol. 3, 2013, 582-586.
- Isa, NMA; Ibrahim, M I; Sa’ude, N; Ibrahim, M: characterization of copper filled in ABS material for freeform fabrication, ‘ARPN Journal of Engineering and Applied Sciences', vol. 11, 2016, 6531-6535.
- Gudrun, Neher; Abdul, Gafur, Md; Muhammad, Abdullah, Al-Mansur; Mahbubur, Md; Rahman, Bhuiyan; Rakibul, Qadir, Md; Farid, Ahmed: Investigation of the Surface Morphology and Structural Characterization of Palm Fiber Reinforced Acrylonitrile Butadiene Styrene (PF-ABS) Composites, ‘MaterialsSciences and Applications’, vol. 5, 2014, 378-386.
- Sunil, Thakur; Chauhan, SR: Study on mechanical and tribological behavior of cenosphere filled vinyl ester composites – A Taguchi method, ‘Indian Journal of Engineering & Materials Sciences’, vol. 20, 2013, 539-548