A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Bhanodaya Reddy, G.
- An Experimental Study on Influence of Coolants in Down Milling of AMMC using Ti-N coated HSS Cutter
Authors
1 Dept. of Mechanical Engineering, Sri Venkateswara University College of Engineering, Tirupati, Andhra Pradesh, IN
Source
Manufacturing Technology Today, Vol 15, No 3 (2016), Pagination: 24-30Abstract
In recent years, many researchers and authors have been investigating various aspects of Aluminium Metal Matrix composites (AMMC) because of their combined mechanical and thermal properties. It becomes a significant task to study the behaviour of AMMC during machining. By observing previous approaches on AMMC, machining of composites is very difficult under normal conditions. During milling process of AMMC using Ti-N coated HSS cutter, some problems arise because of the reinforced particles fabricated in it. High temperatures and poor surface quality were observed at shear zone during machining.
In this context, Aluminium metal matrix composite material is selected as Al- 6061+ 2% Al2O3 and Titanium Nitride (Ti-N) coated HSS helical milling cutter having a size more than composite work piece is selected. The input parameters were taken as speed, feed rate, depth of cut in a range of low, medium and high and coolants are Dry, soluble oil and veg. oil to perform the experiment. Because of various applications and reliable properties of AMMC in advance manufacturing systems, nanotechnology, mechatronics, cryogenics etc., the output parameters were selected as temperature (T) and surface roughness (Ra). Afterwards, Taguchi design of experiments L18 is adopted for the experiment. The values of temperature and surface roughness are noted and the optimal input machining conditions are found by using Fuzzy- Taguchi optimization technique with reference to normalized values followed by their corresponding S/N ratios of output parameters.
The effective optimum results were found by using Fuzzy- Taguchi technique and the variation between experimental and Fuzzy predicted data has been compared and concluded.
Keywords
Aluminium Metal Matrix Composite (AMMC), Slab Milling, Talysurf Meter, Laser Thermometer, Fuzzy-Taguchi Method.- Design and Fabrication of Asymmetric Multi-Electrodes for Fabrication of Corrugated Steel Panels
Authors
1 Dept. of Mechanical Engineering, Sri Venkateswara University College of Engineering, Tirupati, Andhra Pradesh, IN
Source
Manufacturing Technology Today, Vol 15, No 1 (2016), Pagination: 25-30Abstract
The sandwich composites are multilayered materials made by bonding stiff, high strength skin facings to low density core material. The main benefits of using the sandwich concept in structural components are the high stiffness and low weight ratios. Open core metallic sandwich panels are novel type of structures, enabled by innovative fabrication and topology design tools. Such fabricated open core structures welding by Resistance Spot Welding (RSW). The problems associated with RSW are tendency of alloying with the electrode resulting in increased tool wear, and subsequent deterioration of weld quality. In this present work the experimental studies were conducted under type of spot weld, welding current, welding time, hold time and material combination. The complicated behaviour of this process must be analysed to set the optimum parameters to get good quality weld. Based on orthogonal array the experiments were conducted tensile strength test on universal testing machine find out Tensile strength which indicates shear load as per model, Ultimate Shear Stress (UTS) which indicates Shear stress of the weld joint and maximum displacement. The main objective is to predict the better operation conditions of spot weld and influence of each parameter is evaluated.
Keywords
Sandwich Panels, Corrugated Sheets, Multi-Electrodes, Resistance Spot Welding.- Studies on Machining Characteristics & Optimal Process Parameters in Wire EDM of AL 6082 HNMMCS
Authors
1 Department of Mechanical Engineering, Sri Venkateswara University College of Engineering, Tirupati, AP, IN
Source
Manufacturing Technology Today, Vol 16, No 3 (2017), Pagination: 32-38Abstract
Hybrid Nano Metal Matrix Composite (HNMMCs) are the newly developed material which are gaining increasing attention for applications in aerospace, defense and automobile industries as a light weight, high strength materials. In this present work by reinforcing the varying percentage of (0.3% GNT, 0.4% CNT) and (0.5% GNT, 0.6% CNT) the HNMMCs samples have been prepared using stir casting process. Experimental studies are conducted on HNMMCs samples to determine the Density, Hardness and Electrical conductivity. For measuring the hardness using Brinell hardness tester and for electrical conductivity using four probe technique. Machining of any hybrid nano composite materials by conventional machining method is difficult because drastic enhancement in particular properties of composite. WEDM independent of mechanical properties. That's why use of non-conventional machining techniques in shaping of hybrid aluminum metal matrix nano composites has generated considerable interest as the manufacturing of complicated contours such as dies. Machining experiments are conducted on HNMMCs according to Taguchi experimental design (L18) for different parameter combinations such as (TON, TOFF, Wire Feed and Gap Voltage). The experimental responses such as Material removal rate, Surface roughness, Machine Time and kerf width are measured and also the influence of machining parameters like Pulse on time (TON), Pulse off time (TOFF), Wire feed (WF) and Gap Voltage on metal removal rate (MRR), surface roughness (SR), Machine Time and Kerf width is studied and the machining responses are analyzed using AHP-TOPSIS method. The optimal processes parameters are identified by using AHP-TOPSIS.Keywords
Stir Casting, HNMMCs, WEDM, AHP-TOPSIS, Process Parameters.References
- Mussert, KM; Vellinga, WP; Bakker, A; Van Der Zwaag, S: A nano-indentation study on the mechanical behaviour of the matrix material in an AA6061 - Al2O3 MMC, Journal of Materials Science, vol. 37, no.4, 2002, 789-794.
- Satyappa Basavarajappa; Govindarajulu Chandramohan: Dry Sliding Wear Behaviour of Hybrid Metal Matrix Composites, 'Materials Science' (MEDZIAGOTYRA). vol. 11, no. 3, 2005, 253-257.
- Shivanand, HK; Benal, Mahagundappa M; Sharma, SC, Govindraju, N: Comparative Studies on Mechanical Properties of Aluminium Based Hybrid Composites Cast by Liquid Melt Technique and P/M Route, 'Materials Processing for Properties and Performance', 2004, vol. 3, 57-60.
- Shenqing, Wu; Jun, Li: Application of ceramic short fiber reinforced Al alloy Matrix composite on piston for internal combustion engines, 'China Foundry' 1672-6421, 04-408-04, 2010, 408-411.
- Chawla, Nikhilesh; Shen, Yu-Lin: Mechanical Behavior of Particle Reinforced Metal Matrix Composites, 'Advanced Engineering Materials', vol. 3, no. 6, 2001, 357-370
- Hunt, Warren H; Herling, Darrell R: Aluminium Metal Matrix composites, 'Advanced Materials & Processes', February, 2004, 39-42.
- Atul Kumar; Dr. Singh, DK: Performance Analysis of Wire Electric Discharge Machining (W-EDM), 'International Journal of Engineering Research & Technology (IJERT)', vol. 1, no. 4, June – 2012, ISSN: 2278-0181.
- Vukcevic, M; Delijic, K: Some New Directions in Aluminum Based PM Materials for Automotive Applications, 'Materiali in Tehnologue', 2002, vol. 36, 101-105.
- Rosso, M: Ceramic and metal matrix composites: Routes and properties, 'Journal of Materials Processing Technology', vol. 175, 2006, 364–375.
- Umanath, K; Selvamani, ST; Palanikumar, K: Friction and Wear Behavior of Al6061 Alloy (SiCp + Al2O3) Hybrid Composites, 'International Journal of Engineering Science and Technology (IJEST)', ISSN: 0975-5462, vol. 3, no. 7, July, 2011, 5441- 5451.
- Varuzankevorkijan: Development of Al MMC composites for automotive industry, 'Yugoslav association of metallurgical engineers', 2002, 275-286.
- Schaller R: Metal matrix composites, a smart choice for high damping materials, 'Journal of Alloys and Compounds', vol. 355, no. 1-2, 2003, 131–135.
- Veeresh Kumar, GB; Rao, C S P; Selvaraj, N: Mechanical and Tribological Behavior of Particulate Reinforced Aluminum Metal Matrix Composites, 'Journal of Minerals & Materials Characterization & Engineering', vol. 10, no.1, 2011, 59-91.
- Rajyalakshmi, G; Dr. Venkata Ramaiah, P: Simulation, Modelling and Optimization of Process parameters of Wire EDM using Taguchi – Grey Relational Analysis, 'IJAIR', ISSN: 2278-7844.
- Hasçalýk, Ahmet; Çaydas, Ulas: Experimental study of wire electrical discharge machining of AISI D5 tool steel, 'Journal of Materials Processing Technology', vol. 148, no. 3, 2004, 362–367.
- Lodhi, Brajesh Kumar; Agarwal, Sanjay: Optimization of machining parameters in WEDM of AISI D3 Steel using Taguchi Technique, 6th CIRP International Conference on High Performance Cutting, HPC2014 'Procedia CIRP', vol. 14, 2014, 194 -199.
- Amitesh Goswami; Jatinder Kumar: Investigation of surface integrity, material removal rate and wire wear ratio for WEDM of Nimonic 80A alloy using GRA and Taguchi method, 'Engineering Science and Technology, an International Journal', vol. 17, no. 4, 2014, 173-184.
- Rajeev Kumar; Dr. Amit Kohli; Supreet Singh; Deepak Ashri: Effect of Various Wire Electrodes’ Material on Cutting Rate of D3 Material” International Journal for Research in Technological Studies, vol. 1, no. 5, April 2014
- Sensitivity Analysis of Surface Roughness of AISI 1040 Carbon Steel in Dry Turning Operation with PVD Tool Using Taguchi Method
Authors
1 Sri Venkateswara University, College of Engineering, Tirupati, IN
2 Swarnadhra College of Engineering, Narasapur, Andhra Pradesh, IN
Source
Manufacturing Technology Today, Vol 11, No 12 (2012), Pagination: 5-11Abstract
The present study is concentrated with orthogonal cutting of AISI 1040 carbon steel under dry turning conditions with PVD coated cemented carbide inserts. This paper presents the influence of cutting parameters on the surface roughness of carbon steels of AISI 1040 series. The investigations are carried out by conducting experiments based on Taguchi technique considering L27 orthogonal array. The investigations consists of surface roughness of the material under hot and cold conditions, this aspect is studied due to variation of temperature during turning process showing the affects of online monitoring of tool surface roughness. The other general investigations are signal to noise ratio and analysis of variance are employed to the parameters such as Material removal Rate (MRR). Finally, sensitivity analysis is carried out on most influenced cutting parameter to predict the surface roughness by obtaining the absolute fraction of variance.Keywords
PVD, CVD, Taguchi and Sensitivity.- Shot Peening Effect on Surface Characteristics and Mechanical Properties of Aluminum Matrix Composite
Authors
1 Department of Mechanical Engineering, College of Engineering, Sri Venkateswara University, Tirupati, IN
Source
Manufacturing Technology Today, Vol 18, No 10 (2019), Pagination: 3-9Abstract
In this work, the effect of shot peening (SP) and its duration on surface characteristics and mechanical properties of FG Al-SiCP composite reinforced with constant amount (10 wt.%) of SiC particles were studied. The composite surface characteristics after SP with 0, 70 and 140 s duration were investigated by XRD and surface topography by SEM. Moreover, Surface roughness, microhardness and tensile behavior of all the specimens were also studied. Results showed that the SP treatment favors to induce nanocrystalline (NC) structure with refined grains and improved other surface properties too which are enhanced along SP duration. It was also revealed that the grain refinement after SP provoked to rise the values of hardness, tensile and yield strengths. In contrast, longer SP duration causes reduction in percentage of elongation and increased surface roughness. However, SP is industrially popular method due to its superior benefits compared to other surface treatment methods.Keywords
Al-Sic>sub>pReferences
- Huang, J; Wang, Z; Bian, K; Jiang, C: Investigation for different peening techniques on residual stress field of SiCW/Al composite, ‘Journal of Materials Engineering and Performance’, vol. 22, no.3, 2013, 782-786.
- Balakrishnan, M; Dinaharan, I; Palanivel, R; Satishkumar, R: Influence of friction stir processing on microstructure and tensile behavior of AA6061/Al3Zr cast aluminum matrix composites, ‘Journal of Manufacturing Process’, vol. 38, 2019, 148-157.
- Dinaharan, I: Influence of ceramic particulate type on microstructure and tensile strength of aluminum matrix composites produced using friction stir processing, ‘Journal of Asian Ceramic Society’, vol. 4, no. 2, 2016, 209-218.
- Dinaharan, I; Balakrishnan, M; Selvam, JDR; Akinlabi, ET: Microstructural characterization and tensile behavior of friction stir processed AA6061/Al2Cu cast aluminum composites, ‘Journal of Alloys and Compounds’, vol. 781, 2019, 270-279.
- Bagheri, S; Guagliano, M: Review of shot peening process to obtain nanocrystalline surfaces in metal alloys, ‘Journal of Asian Ceramic Society’, vol. 25, no. 1, 2009, 3-14.
- Chen, B: Surface nanocrystallization induced by shot peening and its effect on corrosion resistance of 6061 aluminum alloy, ‘Journal of Material Research’, vol. 29, no. 24, 2014, 3002-3010.
- Ganesh, BKC; Sha, W; Ramanaiah, N: Effect of shot peening on sliding wear and tensile behavior of titanium implant alloys, ‘Materials and Design’, vol. 56, 2014, 480-486.
- Zhu, K; Jiang, C; Li, Z; Du, L; Zhao, Y; Chai, Z; Wang, L; Chen, M: Residual stress and microstructure of the CNT/6061 composite after shot peening, ‘Materials and Design’, vol. 107, 2016, 333-340.
- Luan, W; Jiang, C; Ji, V; Wang, H: Effect of shot peening on surface mechanical properties of TiB2/Al composite, ‘Journal of Material Science’, vol. 44, 2009, 2454-2458.
- Zhan, K; Wu, Y; Li, J; Zhao, B; Yan, Y; Xie, L; Wang, L; Ji, V: Investigation on surface layer characteristics of shot peened graphene reinforced Al composite by X-ray diffraction method, ‘Applied Surface Science’, vol. 435, 2018, 1257-1264.
- Vikas, RS; Maiya, MU; Jayakumar, E; Rajan, TPD; Nagaraja, PBC: Processing and characterization of SiCP reinforced functionally graded AA6061 aluminum metal matrix composites, ‘International Journal of Advanced and Mechanical and Aeronautical Engineering’, vol. 1, 2014, 61-65.
- Venumurali, J; Reddy, GB; Kumar, BP; Ramakotaiah, M: Effect of surface characteristics on electrical resistivity of shot peened SiCP/AA6061 composite by 4PCPs method, ‘Materials Today: Proceedings’, vol. 19, 2019, 440-443.
- Pandey, V; Singh, J; Chattopadhyay, K; Srinivas, NS; Singh, V: Influence of ultrasonic shot peening on corrosion behavior of 7075 aluminum alloy, ‘Journal of Alloys and Compounds’, vol. 723, 2017, 826-840.
- Wang, Z; Luan, W; Huang, J; Jiang, C: XRD investigation of microstructure strengthening mechanism of shot peening on laser hardened 17-4PH, ‘Material Science Engineering’, vol. 528, 2011, 6417-6425.
- Guiberteau, F; Padture, NP; Lawn, BR: Effect of grain size on Hertzian contact damage in alumina, ‘Journal of the American Ceramic Society’, vol. 77, no. 7, 1994, 1825-1831.
- Azar, V; Hashemi, B; Yazdi, MR: The effect of shot peening on fatigue and corrosion behavior of 316L stainless steel in Ringer’s solution, ‘Surface and Coating Technology’, vol. 204, 2010, 3546-3551.
- Bagherifard, S; Guagliano, M:Fatigue behavior of a low-alloy steel with nanostructured surface obtained by severe shot peening, ‘Engineering Fracture Mechanics’, vol. 81, 2012, 56-68.
- Unal, O; Maleki, E; Varol, R: Effect of severe shot peening and ultra-low temperature plasma nitriding on Ti-6Al-4V alloy, ‘Vacuum’, vol. 150, 2018, 69-78.
- Koch, CC: Optimization of strength and ductility in nanocrystalline and ultrafine grained metals, ‘Scripta Materialia’, vol. 49, no. 7, 2003, 657-662.
- Zhan, K; Jiang, CH; Ji, V: Surface mechanical properties of S30432 austenitic steel after shot peening, ‘Applied Surface Science’, vol. 258, no. 24, 2012, 9559-9563
- Development and Experimental Study of Copper Selenide based Thermo-Electric Material by the Method of Powder Metallurgy
Authors
1 Department of Mechanical Engineering, Vemana Institute of Technology, Bangalore, Karnataka, IN
2 Department of Mechanical Engineering, SV University, Tirupati, Andhra Pradesh
Source
Manufacturing Technology Today, Vol 18, No 12 (2019), Pagination: 12-17Abstract
Copper Selenide is one of the promising single crystal thermoelectric material for power generation in low temperature range 300 - 360 K. Universal testing machine is used for pressing the Nano powder to obtain the Nano bulk samples. By using X-ray diffraction (XRD) and scanning electronic microscope (SEM) identified the structure and phase composition. This study shown that 150 kN pressing force in sample without carbon nano tubes showed ZT=1.2 at a temperature of 322K. It is also shown that thermal conductivity and power factor is mainly influencing the value of thermoelectric efficiency of the studied materials.Keywords
Thermoelectric Materials, Nano Scale, Green Synthesis, Figure of Merit.References
- Pennelli, Giovanni: Review of nanostructured devices for thermoelectric applications, 'Beilstein Journal of Nanotechnology', 2014, 5, 1268–1284. doi:10.3762/bjnano.5.141.
- Chen, Zhi-Gang; Han, Guang; Yang, Lei; Cheng, Lina; Zou, Jin: Nanostructured thermoelectric materials: Current research and future challenge, 'Progress in Natural Science: Materials International', vol. 22, no. 6, December 2012, 535-549.
- Liu, Yufei; Zhou, Menghan; He, Jian: Towards higher thermoelectric performance of Bi 2 Te3 via defect engineering, 'Scripta Materialia', vol. 111, 15 January 2016, 39-43.
- Kang, Stephen Dongmin; Pöhls, Jan-Hendrik; Aydemir, Umut; Qiu, Pengfei; Stoumpos, Constantinos C; Hanus, Riley; White, Mary Anne; Shi, Xun; Chen, Lidong; Kanatzidis, Mercouri G; Snyder, G Jeffrey: Enhanced stability and thermoelectric figure-of-merit in copper selenide by lithium doping, 'Materials Today Physics', vol. 1, June 2017, 7-13.
- Ivanova, AA; Osvenskiib, VB; Sorokin, AI; Panchenko, VP; Bulat, LP; Akchurin, R Kh.: Obtaining material based on copper selenide by the methods of powder metallurgy, 'Russian Microelectronics', vol. 46, 2017, 545-550.
- Blanc, Saniya Le: Thermoelectric generators: Linking material properties and systems engineering for waste heat recovery applications, 'Sustainable Materials and Technologies', vol. 1–2, December 2014, 26-35.
- Zheng, Jin-cheng: Recent advances on thermoelectric materials, 'Frontiers of Physics in China', vol. 3, 2008, 269-279
- Abrasive Water Jet Machining of Al5083/ Zro2/ B4c Hybrid Aluminium Metal Matrix Composite and Optimization of Its Process Parameters
Authors
1 Sri Venkateswara University College of Engineering, Tirupati, IN
Source
Manufacturing Technology Today, Vol 21, No 9-10 (2022), Pagination: 10-16Abstract
In this work, Abrasive water jet machining experiments are conducted on Al 5083/ B4C/ ZrO2 metal matrix composites. Experiments are conducted according to Taguchi’s experimental design (OA27) for different combinations of nozzle diameter, stand-off distance, jet pressure, abrasive flow rate, and traverse speed. The experimental data of material removal rate and surface roughness are recorded for these runs and are analysed using Taguchi - Genetic algorithm method for identification of optimal process parameters. Further, ANOVA is conducted to determine the contribution of each of these parameters on machining responses. This work is more useful for maximizing MRR thereby the machining process will be done much faster and at the same time, minimizing the Surface Roughness so as to obtain a smoother finish. The confirmation test is done at optimal parameters combinations and results are satisfactory.Keywords
Machining, Material Removal Rate, Surface Roughness, Taguchi- Genetic Algorithm, Optimization of Process Parameters.References
- Azmir, M. A., & Ahsan, A. K. (2008). Investigation on glass/epoxy composite surfaces machined by abrasive water jet machining. Journal of Materials Processing Technology, 198(1-3), 122-128.
- Balasubramaniam, R., Krishan, J., & Ramakrishnan, N. (2000). Empirical study on the generation of edge radius in abrasive jet external deburring (AJED). Journal of Materials Processing Technology, 99(1-3), 49-53.
- Byrne, D. M. (1986). The Taguchi approach to parameter design. ASQ’s Annu Qual Congr Proc, 40, 168.
- Chithiraiponselvan, M., & Mohanasundararaju, N. (2012). Analysis of surface roughness in abrasive waterjet cutting of cast iron. International Journal of Science, Environment and Technology, 1(3), 174-182.
- Iqbal, A., Dar, N. U., & Hussain, G. (2011). Optimization of abrasive water jet cutting of ductile materials. Journal of Wuhan University of Technology-Mater. Sci. Ed., 26(1), 88-92.
- Jegaraj, J. J. R., & Babu, N. R. (2005). A strategy for efficient and quality cutting of materials with abrasive waterjets considering the variation in orifice and focusing nozzle diameter. International Journal of Machine Tools and Manufacture, 45(12-13), 1443-1450.
- Khan, M. A., Soni, H., Mashinini, P. M., & Uthayakumar, M. (2021). Abrasive water jet cutting process form machining metals and composites for engineering applications: A review. Engineering Research Express, 3(2), 022004.
- Kumar, N., & Shukla, M. (2012). Finite element analysis of multi-particle impact on erosion in abrasive water jet machining of titanium alloy. Journal of Computational and Applied Mathematics, 236(18), 4600-4610.
- Kumar, P., & Kant, R. (2019). Experimental study of abrasive water jet machining of Kevlar epoxy composite. Journal of Manufacturing Engineering, 14(1), 026-032.
- Lohar, S. R., & Kubade, P. R. (2016). Current research and development in abrasive water jet machining (AWJM): A Review. Int. J. Sci. Res, 5(1), 996-999.
- Madhu, S., & Balasubramanian, M. (2015). A review on abrasive jet machining process parameters. Applied Mechanics and Materials, 766, 629-634.
- Nagdeve, L., Chaturvedi, V., & Vimal, J. (2012) Implementation of Taguchi approach for optimization of abrasive water jet machining process parameters. International Journal of Instrumentation, Control and Automation (IJICA), 1(3,4), 9-13.
- Niranjan, C. A., Srinivas, S., & Ramachandra, M. (2018). An experimental study on depth of cut of AZ91 Magnesium Alloy in abrasive water jet cutting. Materials Today: Proceedings, 5(1), 2884-2890.
- Niranjan, C. A., Srinivas, S., & Ramachandra, M. (2018). Effect of process parameters on depth of penetration and topography of AZ91 magnesium alloy in abrasive water jet cutting. Journal of magnesium and alloys, 6(4), 366-374.
- Pudi, S., Avinash, I. G., & Ashok, I. K. (2020). Optimization of process parameters of AWJM ON AA6061-7.5% SiC MMC for lower surface roughness and higher MRR. International Journal of Engineering Applied Sciences and Technology, 5(3), 413-421.
- Ross, P. J. (1988). Taguchi techniques for quality engineering: loss function, orthogonal experiments, parameter and tolerance design.
- Selvam, R., Karunamoorthy, L., & Arunkumar, N. (2017). Investigation on performance of abrasive water jet in machining hybrid composites. Materials and Manufacturing Processes, 32(6), 700-706.
- Selvan, M. C. P., & Raju, N. M. S. (2012). Analysis of surface roughness in abrasive waterjet cutting of cast iron. International Journal of Science, Environment and Technology, 1(3), 174-182.
- Soni, D., & Patel, P. R. (2016). Experimental investigation and parametric study of abrasive water jet cutting process. Journal of Emerging Technologies and Innovative Research, 3(6), 155-162.