Research Repository

See what's under the surface


A validated analytical-numerical modelling strategy to predict residual stresses in single-track laser deposited IN718 (2018)
Journal Article
Walker, T., Bennett, C., Lee, T., & Clare, A. (2019). A validated analytical-numerical modelling strategy to predict residual stresses in single-track laser deposited IN718. International Journal of Mechanical Sciences, 151, 609-621. doi:10.1016/j.ijmecsci.2018.12.004

Direct Energy Deposition (DED) is being increasingly used to repair high value components that have been damaged in-service. The uptake of DED and laser cladding operations for repair is inhibited by accurate modelling techniques. Often the repair pr... Read More

Effect of post processing on the creep performance of laser powder bed fused Inconel 718 (2018)
Journal Article
Xu, Z., Murray, J., Hyde, C., & Clare, A. (2018). Effect of post processing on the creep performance of laser powder bed fused Inconel 718. Additive Manufacturing, 24, 486-497. doi:10.1016/j.addma.2018.10.027

In this study, the creep performance of laser powder bed fusion manufactured Inconel 718 specimens is studied in detail and compared with conventional hot-rolled specimens alongside as-built then heat-treated and as-built then hot-isostatic pressed s... Read More

Imaging material texture of as-deposited selective laser melted parts using spatially resolved acoustic spectroscopy (2018)
Journal Article
Patel, R., Hirsch, M., Dryburgh, P., Pieris, D., Achamfuo-Yeboah, S., Smith, R., …Clark, M. (2018). Imaging material texture of as-deposited selective laser melted parts using spatially resolved acoustic spectroscopy. Applied Sciences, 8(10), doi:10.3390/app8101991

Additive manufacturing (AM) is a production technology where material is accumulated to create a structure, often through added shaped layers. The major advantage of additive manufacturing is in creating unique and complex parts for use in areas wher... Read More

Spatially resolved acoustic spectroscopy additive manufacturing: towards online inspection (2018)
Conference Proceeding
Milesh Pieris, D., Patel, R., Dryburgh, P., Hirsch, M., Li, W., Sharples, S. D., …Clark, M. (2018). Spatially resolved acoustic spectroscopy additive manufacturing: towards online inspection. In n/a

High-integrity engineering applications such as aerospace will not permit the incorporation of components containing any structural defects. The current generation of additive manufacturing platforms yield components with relatively high levels of... Read More

Crystallographic texture can be rapidly determined by electrochemical surface analytics (2018)
Journal Article
Speidel, A., Su, R., Mitchell-Smith, J., Dryburgh, P., Bisterov, I., Pieris, D., …Clare, A. T. (2018). Crystallographic texture can be rapidly determined by electrochemical surface analytics. Acta Materialia, 159, 89-101. doi:10.1016/j.actamat.2018.07.059

Orientation affects application-defining properties of crystalline materials. Hence, information in this regard is highly-prized. We show that electrochemical jet processing (EJP), when coupled with accurate metrological appraisal, can characterise c... Read More

Targeted rework of powder bed fusion additive manufacturing (2018)
Conference Proceeding
Dryburgh, P., Patel, R., Catchpole-Smith, S., Hirsch, M., Perry, L., Smith, R. J., …Clare, A. T. (2018). Targeted rework of powder bed fusion additive manufacturing. In Proceedings of LPM2018 - the 19th International Symposium on Laser Precision Microfabrication, #18/030

There is a clear industrial pull to fabricate high value components using premium high temperature aerospace materials by additive manufacturing. Inconveniently, the same materials’ properties which allow them to perform well in service render them... Read More

Precision enhanced electrochemical jet processing (2018)
Journal Article
Clare, A. T., Speidel, A., Bisterov, I., Jackson-Crisp, A., & Mitchell-Smith, J. (2018). Precision enhanced electrochemical jet processing. CIRP Annals - Manufacturing Technology, 67(1), 205-208. doi:10.1016/j.cirp.2018.04.086

Through electro-physical modification of the electrode gap in electrochemical jet techniques, precision has been shown to be greatly increased. Repeatable kerf widths approaching the diameter of the nozzle are demonstrated and the individual contribu... Read More

Modelling and Characterisation of Electrical Discharge TiC-Fe Cermet Coatings (2018)
Journal Article
Algodi, S. J., Murray, J. W., Brown, P. D., & Clare, A. T. (2018). Modelling and Characterisation of Electrical Discharge TiC-Fe Cermet Coatings. Procedia CIRP, 68, 28-33. doi:10.1016/j.procir.2017.12.017

The creation of coatings via Electrical Discharge (ED) methods can enhance the functionality of components which are subject to prior ED machining process steps. However, the industrial application of these methods has been limited due to poor unders... Read More

Electrolyte multiplexing in electrochemical jet processing (2018)
Journal Article
Mitchell-Smith, J., Speidel, A., Bisterov, I., & Clare, A. T. (2018). Electrolyte multiplexing in electrochemical jet processing. Procedia CIRP, 68, (483-487). doi:10.1016/j.procir.2017.12.088. ISSN 2212-8271

Electrolyte design for electrochemical jet processing (EJP) techniques can directly affect form and finish of machined structures. A newly developed, industrially focused, EJP machining centre was designed to incorporate complete control of all rele... Read More

Wear performance of TiC/Fe cermet electrical discharge coatings (2018)
Journal Article
Algodi, S. J., Murray, J. W., Brown, P. D., & Clare, A. T. (2018). Wear performance of TiC/Fe cermet electrical discharge coatings. Wear, 402-403, doi:10.1016/j.wear.2018.02.007. ISSN 0043-1648

The tribological behaviours of TiC-based cermet coatings, prepared by electrical discharge coating (EDC) using a semi-sintered TiC tool electrode, have been investigated. The as-deposited coatings exhibited complex microstructures, comprising TiC gra... Read More

Creep behaviour of inconel 718 processed by laser powder bed fusion (2018)
Journal Article
Xu, Z., Hyde, C., Tuck, C., & Clare, A. (2018). Creep behaviour of inconel 718 processed by laser powder bed fusion. Journal of Materials Processing Technology, 256, doi:10.1016/j.jmatprotec.2018.01.040. ISSN 0924-0136

Additive manufacturing lends itself well to the manufacture of aerospace parts due to the high complexity and small volume of many components found in modern aero engines. By exploiting additive manufacturing design freedoms, enhanced part functional... Read More

Advancing electrochemical jet methods through manipulation of the angle of address (2017)
Journal Article
Mitchell-Smith, J., Speidel, A., & Clare, A. (2018). Advancing electrochemical jet methods through manipulation of the angle of address. Journal of Materials Processing Technology, 255, doi:10.1016/j.jmatprotec.2017.12.026. ISSN 0924-0136

Electrochemical jet processing techniques have traditionally been considered to be limited to planar interactions with the electrolyte jet being maintained normal to the workpiece surface. In this study, the viability and resultant effects of articul... Read More

Transitory electrochemical masking for precision jet processing techniques (2017)
Journal Article
Mitchell-Smith, J., Speidel, A., & Clare, A. (2018). Transitory electrochemical masking for precision jet processing techniques. Journal of Manufacturing Processes, 31, doi:10.1016/j.jmapro.2017.11.028. ISSN 1526-6125

Electrochemical jet processing techniques provide an efficient method for large area surface structuring and micro-milling, where the metallurgy of the near-surface is assured and not adversely affected by thermal loading. Here, doped electrolytes ar... Read More

Targeted rework strategies for powder bed additive manufacture (2017)
Journal Article
Hirsch, M., Dryburgh, P., Catchpole-Smith, S., Patel, R., Parry, L., Sharples, S., …Clare, A. (2018). Targeted rework strategies for powder bed additive manufacture. Additive Manufacturing, 19, (127-133). doi:10.1016/j.addma.2017.11.011. ISSN 2214-7810

A major factor limiting the adoption of powder-bed-fusion additive manufacturing for production of parts is the control of build process defects and the effect these have upon the certification of parts for structural applications. In response to thi... Read More

On the machinability of directed energy deposited Ti6Al4V (2017)
Journal Article
Oyelola, O., Crawforth, P., M’Saoubi, R., & Clare, A. T. (2018). On the machinability of directed energy deposited Ti6Al4V. Additive Manufacturing, 19, doi:10.1016/j.addma.2017.11.005

Current class Directed Energy Deposition (DED) techniques used for component manufacture and repair have inherently poor geometrical tolerance. Hence, there remains a requirement to apply conventional machining strategies post build in order to achie... Read More