Obulapathi Eggidi

I was born in Pampanuru village, Atmakur mandalam, Anantapur District in Andhra Pradesh State, India, on July 1st, 1986. After completing his B.Tech in Mechanical engineering in 2009 from Kandula Srinivas Reddy Memorial College of Engineering (KSRMCE), Kadapa, Andhrapradesh, he joined for his M.Tech in Nanotechnology, National Institute of Technology, Calicut, Kerala, India in the year of 2009. After completing his M.Tech in 2011, the author worked as an assistant professor at GITAM University, Visakhapatnam, India, up to 2017. The author has joined the National Institute of Technology, Warangal, India, to pursue his doctoral program. The author published several papers in international journals and presented his research at international conferences.

EDUCATION

Ph.D Metallurgical Materials Engineering NIT Warangal 2017-2023
M-Tech Nanotechnology NIT Calicut 2009-2011
B-Tech Mechanical Engineering SV university Tirupati 2006-2009

RESEARCH, TEACHING, or OTHER INTERESTS

Materials Science, General Materials Science, Biomaterials, Surfaces, Coatings and Films

Scopus Publications

Failure Analysis of Austenitic Stainless Steel Weldments: The Role of Copper Contamination and Crack Propagation Mechanisms
Shiva Bejugama, Sidhareddy Manigandan, Vemoori Raju, Obulapathi Eggidi
Journal of Failure Analysis and Prevention, 2025
Tribology and in-vitro biological characterization of TiO2 addition on ceria stabilized zirconia-toughened alumina (CSZTA) composite
Obulapathi Eggidi, Ajoy Kumar Pandey
Journal of Asian Ceramic Societies, 2023
The effect of TiO2 addition on tribology and in-vitro biological characteristics of ceria-stabilized zirconia-toughened alumina (CSZTA-TiO2) ceramic composites were examined and presented in this study. Through the powder metallurgy route, the TiO2 added to CSZTA samples were synthesized and sintered (air environment). Additionally, the pin on the disc machine was used to examine the wear characteristics of sintered samples. Adding TiO2 to CSZTA enhances the tribological properties compared to pure ceria-stabilized zirconia-toughened alumina (CSZTA). In addition, the samples (CSZTA and CSZTA-TiO2) were subjected to aging. There is no monoclinic-phase transformation (no degradation) in the CSZTA-TiO2 sample after 100 h of testing, confirming its great resistance to LTD. The bioactivity of developed CSZTA and CSZTA-TiO2 samples was studied using simulated body fluid (SBF). After chemical treatment, it was shown that the composite would create an apatite layer that resembled bone when soaked in a simulated body fluid with ion concentrations equal to human blood plasma. These results suggest that it may generate apatite within a live organism and connect to the bone via the apatite layer.
Effect of two-step sintering on microstructure and mechanical properties of ceria-stabilized zirconia-toughened alumina-added titania (CSZTA–TiO2)
Obulapathi Eggidi, Ajoy Kumar Pandey
International Journal of Applied Ceramic Technology, 2023
Effect of two‐step sintering (TSS) on microstructure and mechanical properties of ceria‐stabilized zirconia‐toughened alumina with added TiO2 (CSZTA–TiO2) was studied. A coprecipitation technique was used to produce the CSZTA–TiO2 powders. The synthesized powders were compacted using a uniaxial hydraulic press and conventionally sintered in air. The phase and microstructure of sintered samples were studied using X‐ray diffraction and scanning electron microscopy techniques. Phases were quantified using the Rietveld refinement method. Different TSS schedules were followed to optimize microstructure and mechanical properties. Mechanical properties of the CSZTA‐4TiO2 composite were evaluated and found as follows: Vickers's hardness of 1650 ± 9.6 HV10, indentation fracture toughness of 8.45 ± .14 MPa √m, compressive strength of 2088 MPa, and Young's modulus of 158 GPa.
Effect of TiO2 addition on densification, microstructure, and mechanical properties of CSZTA
Obulapathi Eggidi, Shiva Bejugama, Ajoy Kumar Pandey
Journal of Alloys and Compounds, 2022

RECENT SCHOLAR PUBLICATIONS

Tribology and in-vitro biological characterization of TiO 2 addition on ceria stabilized zirconia-toughened alumina (CSZTA) composite
O Eggidi, AK Pandey
Journal of Asian Ceramic Societies 11 (3), 385-394 , 2023
2023
Citations: 3
Effect of two‐step sintering on microstructure and mechanical properties of ceria‐stabilized zirconia‐toughened alumina‐added titania (CSZTA–TiO 2 )
O Eggidi, AK Pandey
International Journal of Applied Ceramic Technology 20 (1), 294-305 , 2023
2023
Citations: 2
Effect of TiO2 addition on densification, microstructure, and mechanical properties of CSZTA
O Eggidi, S Bejugama, AK Pandey
Journal of Alloys and Compounds 899, 163199 , 2022
2022
Citations: 10
Nano-Scale Mechanical Electrical Characterization of PVDF/MWCNT nanocomposite
SV E. Obulapathi., Uvais V. N., Mallikharjuna Rao.
First national conference on recent advances in polymer nanocomposites 1515 , 2011
2011

MOST CITED SCHOLAR PUBLICATIONS

Effect of TiO2 addition on densification, microstructure, and mechanical properties of CSZTA
O Eggidi, S Bejugama, AK Pandey
Journal of Alloys and Compounds 899, 163199 , 2022
2022
Citations: 10
Tribology and in-vitro biological characterization of TiO 2 addition on ceria stabilized zirconia-toughened alumina (CSZTA) composite
O Eggidi, AK Pandey
Journal of Asian Ceramic Societies 11 (3), 385-394 , 2023
2023
Citations: 3
Effect of two‐step sintering on microstructure and mechanical properties of ceria‐stabilized zirconia‐toughened alumina‐added titania (CSZTA–TiO 2 )
O Eggidi, AK Pandey
International Journal of Applied Ceramic Technology 20 (1), 294-305 , 2023
2023
Citations: 2
Nano-Scale Mechanical Electrical Characterization of PVDF/MWCNT nanocomposite
SV E. Obulapathi., Uvais V. N., Mallikharjuna Rao.
First national conference on recent advances in polymer nanocomposites 1515 , 2011
2011