Dr. Ankur Bajpai
University of Edinburgh
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Academic Career Length
11Years (2016-Present)
(Calculated once Scilit publication data is synced: current year − year of first publication + 1)
Representative Publications
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Journal Article
Ankur BajpaiABAnna Baigent
Anna Baigent
SRSakshika Raghav
Sakshika Raghav
Conchur O'BradaighVKVasileios Koutsos
Vasileios Koutsos
Norbert Radacsi4D printing can be defined as the fabrication of structures using smart materials that allow the final object to change its shape, properties, or function in response to an external stimulus such as light, heat, or moisture. The available technologies, materials, and applications have evolved significantly since their first development in 2013, with prospective applications within the aerospace, manufacturing, and soft robotic industries. This review focuses on the printing technologies and smart materials currently available for fabricating these structures. The applications of 4D printing within biomedicine are explored with a focus on tissue engineering, drug delivery, and artificial organs. Finally, some ideas for potential uses are proposed. 4D printing is making its mark with seemingly unlimited potential applications, however, its use in mainstream medical treatments relies on further developments and extensive research investments.
1 November 2018 in Engineering Fracture Mechanics
Journal Article
4 September 2019 in Journal of Applied Polymer Science
Journal Article
Ankur BajpaiBWBernd Wetzel
Bernd Wetzel
AKAndreas Klingler
Andreas Klingler
KFKlaus Friedrich
Klaus Friedrich
Journal Article
Ankur BajpaiSCStéphane Carlotti
Stéphane CarlottiThe paper investigates the effect of adding a combination of rigid nanoparticles and core-shell rubber nanoparticles on the tensile, fracture mechanics, electrical and thermo-mechanical properties of epoxy resins. SiO2 nanoparticles, multi-walled carbon nanotubes (MWCNT’s), as rigid nanofillers, and core-shell rubber (CSR) nanoparticles, as soft nanofillers were used with bisphenol-A-based epoxy resin. Further, the rigid fillers were added systematically with core-shell rubber nanoparticles to investigate the commingled effect of rigid nanofillers and soft CSR nanoparticles. The resulting matrix will be broadly evaluated by standard methods to quantify tensile, fracture mechanics, electrical, and thermal properties. The results show that the electrical conductivity threshold is obtained at 0.075 wt. % for MWCNT-modified systems. For hybrid systems, the maximum increase of fracture toughness (218%) and fracture energy (900%) was obtained for a system containing 5 wt. % of CSR and 10 wt. % of SiO2. The analysis of the fracture surfaces revealed the information about existing toughening micro-mechanisms in the nanocomposites.
Journal Article
Ankur BajpaiAAArun Kumar Alapati
Arun Kumar AlapatiAKAndreas Klingler
Andreas Klingler
Bernd WetzelThe effect of the hybridization of a triblock copolymer and a rigid TiO2 nanofiller on the tensile, fracture mechanics and thermo-mechanical properties of bisphenol F based epoxy resin were studied. The self-assembling block copolymer, constituted of a center block of poly (butyl acrylate) and two side blocks of poly (methyl) methacrylate-co-polar co-monomer was used as a soft filler, and TiO2 nanoparticles were employed as rigid modifiers. Toughening solely by block copolymers (BCP’s) led to the highest fracture toughness and fracture energy in the study, KIc = 2.18 MPa·m1/2 and GIc = 1.58 kJ/m2. This corresponds to a 4- and 16-fold improvement, respectively, over the neat reference epoxy system. However, a reduction of 15% of the tensile strength was observed. The hybrid nanocomposites, containing the same absolute amounts of modifiers, showed a maximum value of KIc = 1.72 MPa·m1/2 and GIc = 0.90 kJ/m2. Yet, only a minor reduction of 4% of the tensile strength was observed. The fracture toughness and fracture energy were co-related to the plastic zone size for all the modified systems. Finally, the analysis of the fracture surfaces revealed the toughening mechanisms of the nanocomposites.
28 June 2023 in Composites Part B: Engineering
Journal Article
MDMachar Devine
Machar DevineAnkur BajpaiWOWinifred Obande
Winifred ObandeConchur O'Bradaigh
Dipa RoyAbout Me
Dr.-Ing. Ankur Bajpai graduated from University Institute of Engineering and Technology, CSJM University Kanpur, India with a Bachelor of Technology (B.Tech) degree in Mechanical Engineering in 2008. In 2010, he joined Industrial Tribology and Maintenance Engineering Center (ITMMEC), Indian Institute of Technology Delhi for his postgraduate studies. He was the second rank holder in the centre and was awarded Master of Technology (M.Tech) degree in 2012. During his M.Tech programme, he was awarded Deutscher Akademischer Austausch Dienst (DAAD) IIT Master Sandwich Scholarship. As a part of which, he spent 9 months at Institute for Light weight structures and polymer technology at TU Dresden (Germany) under Prof. Werner H. Hufenbach. In July 2013, Dr Bajpai joined the Institute for Composite Materials (IVW GmbH), at the Technical University of Kaiserslautern, Germany (TUK) as a PhD student. He later continued to work in the department as a Research Assistant from July 2013 until Dec. 2017
In his PhD project, he focused on Polymer composites. His research emphasized on the development of new generation of epoxy based calender roller covers for paper making application which was carried out in collaboration with Industrial partner. In Dec. 2017, Dr Bajpai successfully defended his PhD title. During his stay at IVW, he supervised 2 master thesis. Later in 2018 he joined LCPO, Bordeaux INP as post doctoral researcher to work on EU Sudoe project “COMPRESSer”.