Research Repository

See what's under the surface


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

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

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

Assessing the capability of in-situ nondestructive analysis during layer based additive manufacture (2016)
Journal Article
Hirsch, M., Patel, R., Li, W., Guan, G., Leach, R. K., Sharples, S. D., & Clare, A. T. (2017). Assessing the capability of in-situ nondestructive analysis during layer based additive manufacture. Additive Manufacturing, 13, (135-142). doi:10.1016/j.addma.2016.10.004. ISSN 2214-7810

Unlike more established subtractive or constant volume manufacturing technologies, additive manufacturing methods suffer from a lack of in-situ monitoring methodologies which can provide informationrelating to process performance and the formation of... Read More

Spatially resolved acoustic spectroscopy for selective laser melting (2016)
Journal Article
Smith, R. J., Hirsch, M., Patel, R., Li, W., Clare, A. T., & Sharples, S. D. (2016). Spatially resolved acoustic spectroscopy for selective laser melting. Journal of Materials Processing Technology, 236, doi:10.1016/j.jmatprotec.2016.05.005. ISSN 0924-0136

Additive manufacturing (AM) is a manufacturing technique that typically builds parts layer by layer, for example, in the case of selective laser melted (SLM) material by fusing layers of metal powder. This allows the construction of complex geometry... Read More

Review of in-situ process monitoring and in-situ metrology for metal additive manufacturing (2016)
Journal Article
Everton, S. K., Hirsch, M., Stravroulakis, P., Leach, R. K., & Clare, A. T. (2016). Review of in-situ process monitoring and in-situ metrology for metal additive manufacturing. Materials and Design, 95, doi:10.1016/j.matdes.2016.01.099. ISSN 0261-3069

Lack of assurance of quality with additively manufactured (AM) parts is a key technological barrier that prevents manufacturers from adopting AM technologies, especially for high-value applications where component failure cannot be tolerated. Develop... Read More