Dr. T. Nancharaiah is presently working as Professor in Mechanical Engineering Department at Bapatla Engineering College, Bapatla, Andhra Pradesh, India. He received doctoral degree in 2010 from JNTUH, Hyderabad. He completed is bachelors degree in Mechanical Engineering from Andhra University in 2000 and Post graduation degree in Production Engineering from Acharya Nagarjuna University in 2004. His area of interest is rapid prototyping, advanced manufacturing systems, Design and Optimization. He published more than 50 papers in various journals and conferences.
Experimental optimization on mechanical properties of 18Ni-300 maraging steel produced by direct metal laser sintering Satish Prakash Karlapudy, T Nancharaiah, V V Subba Rao Engineering Research Express, 2023 Maraging steel material characteristics are greatly affected by build orientation and scanning strategies during manufacturing. This research aims to examine the effect of various build orientations and scan strategies on the ultimate strength and microhardness of 18 Ni-300 grade maraging steel. The maraging steel is made using a technology called direct metal laser sintering. Using the Analysis of Variance approach, the effects of processing factors like build orientation, scan techniques, and type of process on ultimate strength, microhardness, and roughness are optimized. The properties tend to be greater in the horizontal orientation when using the XY scan strategy as a result of thermal history variations,. The mechanical performances of maraging steel components in terms of strength values observed were lower in the vertical position compared to all other orientations. The tests are carried out using an L27 orthogonal array and a Taguchi design of experiment. Build orientation XZ, scan method XY, and Solution-aging-aging(SAAT) has the most significant influence on the final ultimate strength, microhardness, and roughness of all the input factors. A2B2C3 is the optimal combination level of control factors. Additionally, a percentage inaccuracy was identified after conducting confirmation tests on the most prominent experimental data.
Influence of different build orientation and laser scan strategies on surface quality, Mechanical and Material Characteristics of 18 Ni-300 maraging steel processed through DMLS Satish Prakash Karlapudy, T. Nancharaiah, V. V. Subba Rao Australian Journal of Mechanical Engineering, 2023 Direct metal laser sintering (DMLS) is a method used to fabricate metal parts through laser sintering. In this research, experiments are designed to study how scanning patterns and build orientation affect the properties of printed maraging steel (MS1) parts. The mechanical and physical properties of DMLS manufactured parts depend primarily on the building direction and scanning strategies. Three different scanning patterns and build orientations were adopted in this research. Tensile, hardness, the surface roughness of DMLS parts were studied and almost entirely dense under different orientations and strategies and generally higher in horizontal orientation with cross-directional strategy because of thermal history variation. The Uniaxial tensile test findings exhibit that MS has significant anisotropic tensile characteristics, dependent on the specimen orientation and scan strategy. Despite the scanning strategy utilised, the vertical orientation produced the lowest mechanical performances of MS1 parts in terms of strength values recorded compared to all other orientations. Microstructural characterisation is carried out on a sample by using a scanning electron microscope (SEM) and optical microscope (OM) to analyse the fractured surface defects and pores, and X-ray diffraction (XRD) is used to determine the phase transformations. Understanding the impact of various build orientations in tensile, hardness, Surface quality shall enable the manufacturer to use the DMLS process to produce higher-quality MS1 parts.
Flapwise vibration of functionally graded rotating tapered beam with tipmass P. Ravi KUMAR Sigma Journal of Engineering and Natural Sciences, 2022 A flapwise vibration analysis is performed on a functionally graded tapered rotating beam with tip mass. The beam is considered as functionally graded, whose material properties varying in the direction of thickness. It is assumed as beam is a taper beam with uniform width. Using Mori Tanaka method the properties of the functionally graded material are achieved. The first three frequencies of flapwise are obtained using finite element analysis based software ANSYS. By comparing with the results in open literature, the accuracy of the results is tested. The proposed method yielded good results compared with the existing Frobenious method because of good mesh capabilities. Different parametric studies are carried out to investigate the influence of tip mass on the functionally graded (FG) rotating taper beam flapwise frequencies. The influence of rotating speed, hub radius ratio, gradient index, taper ratio and hub radius ratio on flapwise frequency are elaborated with the support of ANSYS results and analytical models. The results show that the variation in tip mass tends to depress the frequencies from 107.19 Hz to 25.31 Hz at 100 rps in fundamental frequency and in third frequency it is decreased from 336.70 to 332.13 Hz at the same rotational speed. Cite this article as: Kumar P R , Nancharaiah T, Kumar D S , K alam S A , Balakrishna G. Flapwise vibration of functionally graded rotating tapered beam with tipmass. Sigma J Eng Nat Sci 2022;40(3): 630 – 638 .
Preface Advances in Science and Technology, 2022
Optimization of Time, Part Accuracy and Surface Roughness of TI-6AL-4V Processed Through SLM Kandula Reddy, Doddi Martin Johnson, Inampudi Pritham, Kowtarapu Lokesh, Tata Nancharaiah Advances in Science and Technology, 2022 Selective Laser Melting (SLM) is an Additive Manufacturing (AM) technique that uses a laser to selectively melt metallic powder in a layer-wise manner, in order to produce functional metal components. It offers great freedom in design and facilitates fast iterations, with the potential of speeding up development phases throughout a wide range of industries. Despite these opportunities, its application into industry is limited. One of the problems that are a limiting factor is dimensional accuracy, production time and surface roughness that are introduced to the components during manufacturing. In this work it is focused on to study the influence of process parameters and laser scanning strategy on the build time, part accuracy and surface roughness of as-fabricated Ti-6Al-4V alloy samples through SLM. The specimens are designed and fabricated at various levels of Layer thickness, Laser power and Scanning strategy and its effect on build time,part accuracy and surface roughness are studied
Experimental investigations and optimization of process parameters using COPRAS method during laser beam machining of Hardox-400 spur gears DV Praveen, PU Rao, T Nancharaiah, S Krugon, YN Babu, GC Naidu, ... International Journal on Interactive Design and Manufacturing (IJIDeM) 19 (4 … , 2025 2025 Citations: 3
Influence of post-heat treatment on microstructure, texture, and mechanical properties of 18Ni-300 maraging steel fabricated by using LPBF technique SP Karlapudy, T Nancharaiah, VV Subba Rao Progress in Additive Manufacturing 9 (6), 1667-1682 , 2024 2024 Citations: 19
Thermoelastic Analysis of Functionally Graded Cylinder PR Kumar, T Nancharaiah, B Ajay, B Rajesh, BDP Nayak, IJNS Babu Applied Mechanics and Materials 917, 39-47 , 2023 2023
Influence of different build orientation and laser scan strategies on surface quality, Mechanical and Material Characteristics of 18 Ni-300 maraging steel processed through DMLS SP Karlapudy, T Nancharaiah, VVS Rao Australian Journal of Mechanical Engineering 21 (4), 1381-1395 , 2023 2023 Citations: 16
Experimental optimization on mechanical properties of 18Ni-300 maraging steel produced by direct metal laser sintering SP Karlapudy, T Nancharaiah, VV Subba Rao Engineering Research Express 5 (1), 015073 , 2023 2023 Citations: 9
Experimental study on the effect of process parameters on the build time and part accuracy of direct metal laser sintering components T Nancharaiah, VSK Reddy, T Chakravarthi, GTS Chowdary, YB Teja Applied Mechanics and Materials 917, 49-56 , 2023 2023 Citations: 2
Optimization of Time, Part Accuracy and Surface Roughness of TI-6AL-4V Processed through SLM 1. Reddy, K., Johnson, D.M., Pritham, I., Lokesh, K., Nancharaiah T Advances in Science and Technology 120, 93-100 , 2022 2022 Citations: 2
Flapwise vibration of functionally graded rotating tapered beam with tipmass P ravi Kumar, T Nancharaıah, DS Kumar, SA Kalam, G Balakrıshna Sigma Journal of Engineering and Natural Sciences 40 (3), 640-648 , 2022 2022
Role of heat treatment on machining characteristics and surface roughness of AZ91 Mg alloy A Suresh, T Nancharaiah, R Dumpala, BR Sunil Materials Today: Proceedings 50, 2488-2492 , 2022 2022 Citations: 5
Pressure Vessel Optimum Design Using Particle Swarm Optimization SRSE 28. P Ravi Kumar, T Nancharaiah , D Sameer Kumar International Conference on Emerging Trends in Mechanical Engineering and … , 2021 2021
A note on preparation of electroless nickel coating on Alumina micro-particulates as the Forerunner to reinforce Al-MMCs D Vijay Praveen, D Ranga Raju, MVJ Raju, T Nancharaiah Recent Advances in Smart Manufacturing and Materials: Select Proceedings of … , 2021 2021 Citations: 3
Multi response optimization of process parameters in wire-cut EDM on INCONEL 625 NancharaiahTata, R KumarPacharu, S KumarDevarakonda Materials Today Proceedings , 2021 2021 Citations: 18
Experimental investigations on machining force in turning of AZ91D magnesium alloy using PCBN tools P Umamaheswarrao, BR Sankar, T Nancharaiah Materials Today: Proceedings 39, 1206-1209 , 2021 2021 Citations: 5
A review paper on metal 3D printing technology T Nancharaiah International Conference on Advances in Materials Processing & Manufacturing … , 2020 2020 Citations: 20
Influence of Canola Oil on The Emission and Performance Characteristics of Four Stroke Diesel Engine as A Bio Fuel T. Nancharaiah*, P. Ravi Kumar & D. Sameer Kumar International Journal of Mechanical and Production Engineering Research and … , 2020 2020
Multi Response Optimization of Process Parameters in Wire-Cut EDM on Inconel 625 YSR Dr. T. Nancharaiah International Conference on Recent Advances in Mechanical Engineering (ICRAME) , 2020 2020
Effect of Tipmass on Frequency of Functionally Graded Rotating Beam DDSK Dr. P. Ravi Kumar, Dr. T. Nancharaiah Journal of Xi'an University of Architecture & Technology 12 (4), 1006-7930 , 2020 2020
Effect of Tipmass on Frequency of Functionally Graded Rotating Beam DDSK Dr. P. Ravi Kumar, Dr. T. Nancharaiah Journal of Xi'an University of Architecture & Technology 12 (4), 5663-5668 , 2020 2020
Multi objective optimization of process parameters of Al 6061-SiCp metal matrix composite in end milling-Hybrid GRA-PCA approach P Umamaheswarrao, BR Sankar, T Nancharaiah Materials Today: Proceedings 26, 696-700 , 2020 2020 Citations: 10
Optimization of Process Parameters in Wire-Cut EDM of Inconel 625 Using Taguchi’s Approach DTN M. Subramanyam International Conference on Recent Advances in Materials, Manufacturing … , 2019 2019 Citations: 77
An experimental investigation on surface quality and dimensional accuracy of FDM components T Nancharaiah, DR Raju, VR Raju Int. J. Emerg. Technol 1 (2), 106-111 , 2010 2010 Citations: 396
Optimization of process parameters in FDM process using design of experiments T Nancharaiah Int J Emerg Technol 2 (1), 100-102 , 2011 2011 Citations: 145
Optimization of Process Parameters in Wire-Cut EDM of Inconel 625 Using Taguchi’s Approach DTN M. Subramanyam International Conference on Recent Advances in Materials, Manufacturing … , 2019 2019 Citations: 77
A review paper on metal 3D printing technology T Nancharaiah International Conference on Advances in Materials Processing & Manufacturing … , 2020 2020 Citations: 20
Influence of post-heat treatment on microstructure, texture, and mechanical properties of 18Ni-300 maraging steel fabricated by using LPBF technique SP Karlapudy, T Nancharaiah, VV Subba Rao Progress in Additive Manufacturing 9 (6), 1667-1682 , 2024 2024 Citations: 19
Multi response optimization of process parameters in wire-cut EDM on INCONEL 625 NancharaiahTata, R KumarPacharu, S KumarDevarakonda Materials Today Proceedings , 2021 2021 Citations: 18
Influence of different build orientation and laser scan strategies on surface quality, Mechanical and Material Characteristics of 18 Ni-300 maraging steel processed through DMLS SP Karlapudy, T Nancharaiah, VVS Rao Australian Journal of Mechanical Engineering 21 (4), 1381-1395 , 2023 2023 Citations: 16
Multi objective optimization of process parameters of Al 6061-SiCp metal matrix composite in end milling-Hybrid GRA-PCA approach P Umamaheswarrao, BR Sankar, T Nancharaiah Materials Today: Proceedings 26, 696-700 , 2020 2020 Citations: 10
Experimental optimization on mechanical properties of 18Ni-300 maraging steel produced by direct metal laser sintering SP Karlapudy, T Nancharaiah, VV Subba Rao Engineering Research Express 5 (1), 015073 , 2023 2023 Citations: 9
Process parameters optimization in SLS process using design of experiments T Nancharaiah, M Nagabhushanam, BA Nagendram Int J Mech Eng Technol 4 (2), 162-171 , 2013 2013 Citations: 7
Role of heat treatment on machining characteristics and surface roughness of AZ91 Mg alloy A Suresh, T Nancharaiah, R Dumpala, BR Sunil Materials Today: Proceedings 50, 2488-2492 , 2022 2022 Citations: 5
Experimental investigations on machining force in turning of AZ91D magnesium alloy using PCBN tools P Umamaheswarrao, BR Sankar, T Nancharaiah Materials Today: Proceedings 39, 1206-1209 , 2021 2021 Citations: 5
Optimization Of Process Parameters on Cylindrical Grinding Machine Using Taguchi Method PS 1. Dr. T. Nancharaiah International Journal for Innovative Engineering and Management Research, 7 … , 2018 2018 Citations: 4
Experimental investigations and optimization of process parameters using COPRAS method during laser beam machining of Hardox-400 spur gears DV Praveen, PU Rao, T Nancharaiah, S Krugon, YN Babu, GC Naidu, ... International Journal on Interactive Design and Manufacturing (IJIDeM) 19 (4 … , 2025 2025 Citations: 3
A note on preparation of electroless nickel coating on Alumina micro-particulates as the Forerunner to reinforce Al-MMCs D Vijay Praveen, D Ranga Raju, MVJ Raju, T Nancharaiah Recent Advances in Smart Manufacturing and Materials: Select Proceedings of … , 2021 2021 Citations: 3
Experimental study on the effect of process parameters on the build time and part accuracy of direct metal laser sintering components T Nancharaiah, VSK Reddy, T Chakravarthi, GTS Chowdary, YB Teja Applied Mechanics and Materials 917, 49-56 , 2023 2023 Citations: 2
Optimization of Time, Part Accuracy and Surface Roughness of TI-6AL-4V Processed through SLM 1. Reddy, K., Johnson, D.M., Pritham, I., Lokesh, K., Nancharaiah T Advances in Science and Technology 120, 93-100 , 2022 2022 Citations: 2
Thermoelastic Analysis of Functionally Graded Cylinder PR Kumar, T Nancharaiah, B Ajay, B Rajesh, BDP Nayak, IJNS Babu Applied Mechanics and Materials 917, 39-47 , 2023 2023
Flapwise vibration of functionally graded rotating tapered beam with tipmass P ravi Kumar, T Nancharaıah, DS Kumar, SA Kalam, G Balakrıshna Sigma Journal of Engineering and Natural Sciences 40 (3), 640-648 , 2022 2022
