Overview

Richard is the Additive Manufacturing [AM] specialist at the Centre for Additive Layer Manufacturing, involved in all aspects of AM research with the group.

With over 10 years experience as an industrial user of AM technologies prior to joining the research group in 2011, his focus is now the development of new high perfomance polymers and their composites for various AM processes.

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Publications

_{Copyright Notice: Any articles made available for download are for personal use only. Any other use requires prior permission of the author and the copyright holder.}

| 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 |

2024

• Yi N, Chen Y, Shen J, Davies R, Ghita O. (2024) Correlation between interfacial bond strength and degree of healing in overprinting PAEK on CF/PAEK composites, Composites Part A: Applied Science and Manufacturing, pages 108217-108217, article no. 108217, DOI:10.1016/j.compositesa.2024.108217. [PDF]
• Liu Y, Davies R, Yi N, McCutchion P, Chen B, Ghita O. (2024) Multiscale Porous Poly (Ether-Ether-Ketone) Structures Manufactured by Powder Bed Fusion Process, 3D Printing and Additive Manufacturing, volume 11, no. 1, pages 219-230, DOI:10.1089/3dp.2021.0317. [PDF]

2023

• Liu Y, Davies R, McCutchion P, Chaplin A, Hodge S, Jones E, McEwan K, Hipkins K, Ghita O. (2023) Fabrication of functionalised graphene-PAEK nanocomposites for different manufacturing processes, Virtual and Physical Prototyping, volume 19, no. 1, DOI:10.1080/17452759.2023.2283884. [PDF]
• Comelli CA, Yi N, Davies R, van der Pol H, Ghita O. (2023) Observation of Peek Melting Peaks within the Additive Manufacturing Material Extrusion Process in Relation to Isothermal and Non‐Isothermal Processes, Macromolecular Materials and Engineering, DOI:10.1002/mame.202300386. [PDF]
• Mann M, Davies R, Lawrence C, Ghita O. (2023) Prototype Design for Grading Structures in Powder Bed Fusion Processes, 3D PRINTING AND ADDITIVE MANUFACTURING, volume 10, no. 6, pages 1320-1335, DOI:10.1089/3dp.2022.0063. [PDF]
• Liu Y, Yi N, Davies R, McCutchion P, Ghita O. (2023) Powder Bed Fusion Versus Material Extrusion: A Comparative Case Study on Polyether-Ether-Ketone Cranial Implants, 3D Printing and Additive Manufacturing, volume 10, no. 5, pages 941-954, DOI:10.1089/3dp.2021.0300. [PDF]

2022

• Comelli CA, Yi N, Davies R, van der Pol H, Ghita O. (2022) Material extrusion thermal model mapped across polyetheretherketone isothermal and continuous cooling transformation charts, Additive Manufacturing, volume 59, pages 103129-103129, article no. 103129, DOI:10.1016/j.addma.2022.103129. [PDF]
• Davies R, Evans K, Ghita O. (2022) Multivariate correlation of PolyArylEtherKetone powder properties for additive manufacturing and a method for predicting spreading in polymer powder bed fusion, Powder Technology, volume 410, pages 117871-117871, article no. 117871, DOI:10.1016/j.powtec.2022.117871. [PDF]
• Yi N, Davies R, Chaplin A, Ghita O. (2022) Novel backbone modified polyetheretherketone (PEEK) grades for powder bed fusion with enhanced elongation at break, Additive Manufacturing, volume 55, pages 102857-102857, article no. 102857, DOI:10.1016/j.addma.2022.102857. [PDF]
• Comelli CA, Davies R, van der Pol H, Ghita O. (2022) PEEK filament characteristics before and after extrusion within fused filament fabrication process, Journal of Materials Science, volume 57, no. 1, pages 766-788, DOI:10.1007/s10853-021-06652-0. [PDF]

2021

• Davies R, Yi N, McCutchion P, Ghita O. (2021) Mechanical property variance amongst vertical fused filament fabricated specimens via four different printing methods, Polymer International, volume 70, no. 8, pages 1073-1079, DOI:10.1002/pi.6172. [PDF]
• Yi N, Davies R, Chaplin A, McCutchion P, Ghita O. (2021) Slow and fast crystallising poly aryl ether ketones (PAEKs) in 3D printing: crystallisation kinetics, morphology, and mechanical properties, Additive Manufacturing, DOI:10.1016/j.addma.2021.101843.

2020

• Benedetti L, Brulé B, Decraemer N, Davies R, Evans KE, Ghita O. (2020) A route to improving elongation of high-temperature laser sintered PEKK, Additive Manufacturing, volume 36, pages 101540-101540, article no. 101540, DOI:10.1016/j.addma.2020.101540. [PDF]
• Chen B, Davies R, Chang H, Xia Y, Zhu Y, Ghita O. (2020) In-situ synthesis of Metal Organic Frameworks (MOFs)-PA12 powders and their laser sintering into hierarchical porous lattice structures, Additive Manufacturing, DOI:10.1016/j.addma.2020.101774.
• Chen B, Davies R, Liu Y, Yi N, Qiang D, Zhu Y, Ghita O. (2020) Laser sintering of graphene nanoplatelets encapsulated polyamide powders, Additive Manufacturing, volume 35, pages 101363-101363, article no. 101363, DOI:10.1016/j.addma.2020.101363.

2019

• Davies R, Shyng Y, McCutchion P, Holsgrove T, Ghita O. (2019) PEEK laser sintered intervertebral lumbar cages: process and properties, 4th International PEEK Meeting, Washington Dc, Usa,, 25th - 26th Apr 2019, https://biomed.drexel.edu/peek/conferences/publication-files/2019-peek-program.pdf.
• Benedetti L, Brulé B, Decraemer N, Davies R, Evans K, Ghita O. (2019) Mechanical performance of laser sintered poly(ether ketone ketone) (PEKK), Solid Freeform Fabrication 2019: Proceedings of the 30th Annual International Solid Freeform Fabrication Symposium - An Additive Manufacturing Conference, SFF 2019, pages 721-734.
• Chen B, Berretta S, Davies R, Ghita O. (2019) Characterisation of carbon fibre (Cf) - Poly Ether Ketone (PEK) composite powders for laser sintering, Polymer Testing, volume 76, DOI:10.1016/j.polymertesting.2019.03.011.

2018

• Yazdani B, Chen B, Benedetti L, Davies R, Ghita OR, Zhu Y. (2018) A new method to prepare composite powders customized for high temperature laser sintering, Composites Science and Technology, volume 167, pages 243-250, DOI:10.1016/j.compscitech.2018.08.006.

2017

• Berretta S, Davies R, shyng YT, Wang Y, Ghita OR. (2017) Fused Deposition Modelling of high temperature polymers: Exploring CNT PEEK composites, Polymer Testing, DOI:10.1016/j.polymertesting.2017.08.024.

2016

• Berretta S, Wang Y, Davies R, Ghita O. (2016) Polymer viscosity, particle coalescence and mechanical performance in high-temperature laser sintering, Journal of Materials Science, DOI:10.1007/s10853-016-9761-6.

2015

• Davies R, Shyng YT, Wang Y, Ghita O. (2015) Extrusion deposition of carbon nanotubes (CNT)/poly ether ether ketone (Peek), ICCM International Conferences on Composite Materials, volume 2015-July.
• Wang Y, Davies R, Ghita O. (2015) High temperature additive manufacturing of poly aryl Ether Ketones (Paek) composites, ICCM International Conferences on Composite Materials, volume 2015-July.
• Wang Y, Rouholamin D, Davies R, Ghita OR. (2015) Powder characteristics, microstructure and properties of graphite platelet reinforced Poly Ether Ether Ketone composites in High Temperature Laser Sintering (HT-LS), Materials & Design, volume 88, pages 1310-1320, DOI:10.1016/j.matdes.2015.09.094. [PDF]

2014

• Ghita OR, James E, Davies R, Berreta S, Singh B, Flint S, Evans KE. (2014) High Temperature Laser Sintering: An investigation into mechanical properties and shrinkage characteristics of Poly (Ether Ketone) structures, Materials and Design, DOI:10.1016/j.matdes.2014.04.035.

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