Investigation on mechanical and thermal behaviour of graphene bonded carbon/Kevlar hybrid fabric polymer composites Venkateswara Babu Peddakondigalla, Vasavi Boggarapu, Rajani Doppalapudi, Phani Pooja N., Aruna Y. Journal of Engineering and Applied Science, 2024 The present research is aimed to understand the influence of graphene-reinforced carbon/Kevlar hybrid fabric epoxy composites. Samples HG0, HG2, HG4, and HG6 are fabricated using four layers of fabric mat and with varying graphene weight percentage as 0, 2, 4, and 6 wt.%, respectively. Mechanical characterizations such as hardness, tensile, and flexural strength were individually assessed. Thermal stability is evaluated through thermos-gravimetric analysis. Composite HG6 with high filler loading showed 71% and 114.4% greater tensile and flexural strength compared to unfilled HG0 specimen. Similarly, HG6 exhibited greater thermal stability. Inclusion of graphene particles in higher concentration improved the interfacial bonding between fibre/matrix/filler system. Fracture surfaces are analysed using scanning electron microscopy to understand the failure mechanisms.
A novel approach to develop and characterize bi-directional aluminum-copper functionally graded material Vasavi Boggarapu, PS RamaSreekanth, Venkateswara Babu Peddakondigalla, Somaiah Chowdary Mallampati, Rakesh Kanakam, et al. Proceedings of the Institution of Mechanical Engineers Part E Journal of Process Mechanical Engineering, 2024 A substantial increase in research activity on functionally graded materials (FGMs) was foreseen in the past few decades owing to their high strength and stiffness, design flexibility, and multi-functional features. However, the majority of the literature was confined to uni-directional (1D) gradation in material constituents. As a result, their usage was limited to a few advanced applications such as aircraft frames and shuttles, propulsion systems, and machine elements wherein the temperature is distributed along two or more directions. Thus, there is a demand for FGM that shows property variations in bi (2D) or tri (3D) directions. The present research work is an attempt made to design and develop bi-directional functionally graded material (2D FGM) with aluminum (Al) and copper particles. A 2D FGM sample in the form of a rectangular slab having material variation along x and y directions was produced through powder metallurgy using a 3D-printed cuboid. Variations in microstructure and hardness confirm the material gradation in two directions. Change in erosion wear at different locations was also observed on the sample. Furthermore, worn-out surfaces using scanning electron micrographs revealed a ductile fracture.
Experimental study on tribological behavior of aluminum–copper functionally graded material Vasavi Boggarapu, P.S. Rama Sreekanth, Venkateswara Babu Peddakondigalla, Phani Prasanthi Parvathaneni, Shakuntla Ojha, et al. Proceedings of the Institution of Mechanical Engineers Part L Journal of Materials Design and Applications, 2023 A five-layered aluminum–copper metal functionally graded material was developed through powder metallurgy process. The sample comprises different weight percentages of copper and aluminum that vary from 0 wt% to 100 wt % along the thickness direction. Erosion wear was performed on air jet erosion testing apparatus at a constant impact angle of 90o and impact velocity of 151 m/s. It was observed that erosion wear decreases when there is an increase in copper content. Layer 1 comprising 100 wt% of copper has shown 76.92% lower wear compared to layer 5 (100 wt% of aluminum). Besides, erosion resistance was enhanced at graded layers due to the formation of Al2Cu phase during sintering. Abrasive wear of metal functionally graded material was evaluated on the pin-on-disc test apparatus. Experiments were conducted at different loading conditions on various abrasive surfaces (P120, P800, and P2000). Irrespective of abrasive surface, the specific wear rate of aluminum–copper metal functionally graded material sample increased with an increase in load from 5N to 15N. At 5N, abrasive wear of metal functionally graded material on P2000 grit surface was 87.7% and 27.19% lower compared to P120 and P800, respectively. Eroded and worn-out surfaces were examined microscopically to understand the wear mechanisms and are discussed in detail.
Friction and wear performance of surface textured bearing steel AISI 52100: a study of texture distribution VB Peddakondigalla, V Boggarapu, R Doppalapudi, LS Vikram, ... International Journal on Interactive Design and Manufacturing (IJIDeM) 19 (1 … , 2025 2025 Citations: 8
Investigation on mechanical and thermal behaviour of graphene bonded carbon/Kevlar hybrid fabric polymer composites VB Peddakondigalla, V Boggarapu, R Doppalapudi, PP N Journal of Engineering and Applied Science 71 (1), 113 , 2024 2024 Citations: 8
A novel approach to develop and characterize bi-directional aluminum-copper functionally graded material V Boggarapu, PS RamaSreekanth, VB Peddakondigalla, SC Mallampati, ... Proceedings of the Institution of Mechanical Engineers, Part E: Journal of … , 2024 2024 Citations: 2
Microstructure, mechanical and tribological properties of Al/Cu functionally graded material fabricated through powder metallurgy V Boggarapu, PSR Sreekanth, VB Peddakondigalla Journal of Engineering Research 12 (3), 502-510 , 2024 2024 Citations: 21
Influence of non-woven antistatic substrate materials on polyvinylidene fluoride electrospun nanofibers: Fabrication, characterization, and performance evaluation VD Avvari, D Kimmer, SK Sahu, V Boggarapu, P Slobodian, TP Rahul, ... Iranian Polymer Journal 33 (8), 1111-1127 , 2024 2024 Citations: 8
A study on the mechanical and erosion wear of functionally-layered polymer composites and hybrid functionally-layered polymer composites S Ojha, G Raghavendra, K Prudhvidhar, KRN Reddy, V Boggarapu Iranian Polymer Journal 33 (5), 647-657 , 2024 2024 Citations: 7
Influence of shelf-life duration on mechanical, thermal and shape recovery motion derivatives of shape memory polyurethane V Boggarapu, S Namathoti, VD Avvari, VB Peddakondigalla, ... Results in Engineering 21, 101819 , 2024 2024 Citations: 11
Potential of polyurethane functionalized electrospun nanofiber membrane as self-cleaning water filter VD Avvari, V Boggarapu, D Kimmer, PSR Sreekanth Arabian Journal for Science and Engineering 49 (2), 2357-2366 , 2024 2024 Citations: 6
Study on solid particle erosion behavior of polymer functionally graded composites V Boggarapu, PS RamaSreekanth, VB Peddakondigalla, SK Sahu Materials Today: Proceedings 113, 216-222 , 2024 2024 Citations: 5
Improvements in the mechanical and thermal characteristics of polymer matrix composites reinforced with various nanofillers: A brief review SK Sahu, V Boggarapu, PSR Sreekanth Materials Today: Proceedings 113, 1-8 , 2024 2024 Citations: 25
Mechanical and Tribological Behavior of Hybrid Polymer and Hybrid Sandwich Composites V Boggarapu, R Gujjala, S Prasad, S Ojha, OP Mingu Advanced Composites, 233-267 , 2023 2023
Fabrication and Compressive Strength of Functionally Graded Dual Filler Polymer Composite Materials V Boggarapu, R Gujjala, S Ojha, L Ruthik, VB Peddakondigalla, S Jain International Conference on Future technologies in Manufacturing, Automation … , 2023 2023
Experimental study on tribological behavior of aluminum–copper functionally graded material V Boggarapu, PS Rama Sreekanth, VB Peddakondigalla, ... Proceedings of the Institution of Mechanical Engineers, Part L: Journal of … , 2023 2023 Citations: 9
Friction and Wear Characteristics of Engine Oil Through Four-Ball Tester VB Peddakondigalla, I Syed, V Boggarapu, PSR Sreekanth, SK Sahu, ... International Conference on Production and Industrial Engineering, 59-65 , 2023 2023
Surface texturing for reducing sliding friction and wear under dry and lubricated conditions PV Babu, S Ismail, V Boggarapu Surface Engineering, 233-241 , 2022 2022 Citations: 2
Erosion wear characteristics of step-wise layered polymer composite materials by silica sand particles V Boggarapu, S Jain, S Ojha, AK Bandaru, R Gujjala Proceedings of the Institution of Mechanical Engineers, Part L: Journal of … , 2022 2022 Citations: 6
Tribological Properties of Metal Particulate Reinforced Polymeric Functionally Graded Materials V Boggarapu, R Gujjala, S Ojha, R Kanakam, SC Mallampati, PK Jatothu Recent Trends in Product Design and Intelligent Manufacturing Systems … , 2022 2022 Citations: 3
Functionally Graded Materials V Boggarapu, R Gujjala, S Ojha, R Kanakam, SC Mallampati Recent Trends in Product Design and Intelligent Manufacturing Systems … , 2022 2022
Study on mechanical and tribological characteristics of layered functionally graded polymer composite materials V Boggarapu, L Ruthik, DK Gara, S Ojha, S Jain, R Gujjala, AK Bandaru, ... Proceedings of the Institution of Mechanical Engineers, Part E: Journal of … , 2022 2022 Citations: 19
Research on mechanical and erosion behavior of stepped polymeric functionally graded materials reinforced with aluminum V Boggarapu, S Adapa, R Kanakam, S Ojha, R Gujjala Polymer Composites 43 (2), 1048-1059 , 2022 2022 Citations: 14
MOST CITED SCHOLAR PUBLICATIONS
State of the art in functionally graded materials V boggarapu, R gujjala, S ojha, SK Acharya, V babu P, S Chowdary, ... Composite Structures, 113596 , 2021 2021.0 Citations: 323
A critical review on erosion wear characteristics of polymer matrix composites V Boggarapu, R Gujjala, S Ojha Materials Research Express 7 (2), 022002 , 2020 2020.0 Citations: 86
Influence of nano-silica on enhancing the mechanical properties of sisal/kevlar fiber reinforced polyester hybrid composites MS Chowdary, G Raghavendra, MSRN Kumar, S Ojha, V Boggarapu Silicon 14 (2), 539-546 , 2022 2022.0 Citations: 71
Improvements in the mechanical and thermal characteristics of polymer matrix composites reinforced with various nanofillers: A brief review SK Sahu, V Boggarapu, PSR Sreekanth Materials Today: Proceedings 113, 1-8 , 2024 2024.0 Citations: 25
Microstructure, mechanical and tribological properties of Al/Cu functionally graded material fabricated through powder metallurgy V Boggarapu, PSR Sreekanth, VB Peddakondigalla Journal of Engineering Research 12 (3), 502-510 , 2024 2024.0 Citations: 21
Effect of bi-directional and multi-directional fibers on the mechanical properties of glass fiber-epoxy composites G Raghavendra, PP Naidu, S Ojha, B Vasavi, M Pachal, SK Acharya Materials Research Express 6 (11), 115353 , 2019 2019.0 Citations: 20
Study on mechanical and tribological characteristics of layered functionally graded polymer composite materials V Boggarapu, L Ruthik, DK Gara, S Ojha, S Jain, R Gujjala, AK Bandaru, ... Proceedings of the Institution of Mechanical Engineers, Part E: Journal of … , 2022 2022.0 Citations: 19
Research on mechanical and erosion behavior of stepped polymeric functionally graded materials reinforced with aluminum V Boggarapu, S Adapa, R Kanakam, S Ojha, R Gujjala Polymer Composites 43 (2), 1048-1059 , 2022 2022.0 Citations: 14
Influence of shelf-life duration on mechanical, thermal and shape recovery motion derivatives of shape memory polyurethane V Boggarapu, S Namathoti, VD Avvari, VB Peddakondigalla, ... Results in Engineering 21, 101819 , 2024 2024.0 Citations: 11
Experimental study on tribological behavior of aluminum–copper functionally graded material V Boggarapu, PS Rama Sreekanth, VB Peddakondigalla, ... Proceedings of the Institution of Mechanical Engineers, Part L: Journal of … , 2023 2023.0 Citations: 9
Friction and wear performance of surface textured bearing steel AISI 52100: a study of texture distribution VB Peddakondigalla, V Boggarapu, R Doppalapudi, LS Vikram, ... International Journal on Interactive Design and Manufacturing (IJIDeM) 19 (1 … , 2025 2025.0 Citations: 8
Investigation on mechanical and thermal behaviour of graphene bonded carbon/Kevlar hybrid fabric polymer composites VB Peddakondigalla, V Boggarapu, R Doppalapudi, PP N Journal of Engineering and Applied Science 71 (1), 113 , 2024 2024.0 Citations: 8
Influence of non-woven antistatic substrate materials on polyvinylidene fluoride electrospun nanofibers: Fabrication, characterization, and performance evaluation VD Avvari, D Kimmer, SK Sahu, V Boggarapu, P Slobodian, TP Rahul, ... Iranian Polymer Journal 33 (8), 1111-1127 , 2024 2024.0 Citations: 8
A study on the mechanical and erosion wear of functionally-layered polymer composites and hybrid functionally-layered polymer composites S Ojha, G Raghavendra, K Prudhvidhar, KRN Reddy, V Boggarapu Iranian Polymer Journal 33 (5), 647-657 , 2024 2024.0 Citations: 7
Venkateswara babu, P.; Chowdary, S.; kumar Gara, D V Boggarapu, R Gujjala, S Ojha, S Acharya Compos. Struct 262, 113596 , 2021 2021.0 Citations: 7
Potential of polyurethane functionalized electrospun nanofiber membrane as self-cleaning water filter VD Avvari, V Boggarapu, D Kimmer, PSR Sreekanth Arabian Journal for Science and Engineering 49 (2), 2357-2366 , 2024 2024.0 Citations: 6
Erosion wear characteristics of step-wise layered polymer composite materials by silica sand particles V Boggarapu, S Jain, S Ojha, AK Bandaru, R Gujjala Proceedings of the Institution of Mechanical Engineers, Part L: Journal of … , 2022 2022.0 Citations: 6
Study on solid particle erosion behavior of polymer functionally graded composites V Boggarapu, PS RamaSreekanth, VB Peddakondigalla, SK Sahu Materials Today: Proceedings 113, 216-222 , 2024 2024.0 Citations: 5
Effect of eggshell particulate reinforcement on tensile behavior of eggshell–epoxy composite M Panchal, G Raghavendra, M Omprakash, S Ojha, B Vasavi Innovative Product Design and Intelligent Manufacturing Systems: Select … , 2020 2020.0 Citations: 5
Venkateswara babu, P., Chowdary, S., and Kumar Gara, D., 2021,“State of the Art in Functionally Graded Materials,” V Boggarapu, R Gujjala, S Ojha, S Acharya Composite Structures 262, 113596 , 0 Citations: 5