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Simple method of measuring thicknesses of surface-hardened layers by laser ultrasonic technique (2021)
Journal Article
Lee, Y., Kitazawa, S., & Patel, R. (2021). Simple method of measuring thicknesses of surface-hardened layers by laser ultrasonic technique. Japanese Journal of Applied Physics, 60(7), https://doi.org/10.35848/1347-4065/ac030f

We proposed a simple non-contact inspection method using a laser ultrasonic technique to measure the thickness of a surface-hardened layer. This measurement is based on the dependence of a surface-wave velocity on the thickness of the hardened layers... Read More about Simple method of measuring thicknesses of surface-hardened layers by laser ultrasonic technique.

Single pixel camera methodologies for spatially resolved acoustic spectroscopy (2021)
Journal Article
Patel, R., Sharples, S. D., Clark, M., Somekh, M. G., & Li, W. (2021). Single pixel camera methodologies for spatially resolved acoustic spectroscopy. Applied Physics Letters, 118(5), https://doi.org/10.1063/5.0040123

Spatially resolved acoustic spectroscopy (SRAS) is a laser ultrasound technique used to determine the crystallographic orientation (i.e. microstructure) of materials through the generation and measurement of surface acoustic wave velocity on a sample... Read More about Single pixel camera methodologies for spatially resolved acoustic spectroscopy.

Non-destructive detection of machining-induced white layers through grain size and crystallographic texture-sensitive methods (2021)
Journal Article
Brown, M., Pieris, D., Wright, D., Crawforth, P., M'Saoubi, R., McGourlay, J., …Ghadbeigi, H. (2021). Non-destructive detection of machining-induced white layers through grain size and crystallographic texture-sensitive methods. Materials and Design, 200, https://doi.org/10.1016/j.matdes.2021.109472

Detection of machining-induced white layers is currently a destructive inspection process with a form of cross-sectional microscopy required. This paper, therefore, reports on the development of a novel non-destructive inspection method for detecting... Read More about Non-destructive detection of machining-induced white layers through grain size and crystallographic texture-sensitive methods.

Spatially resolved acoustic spectroscopy for integrity assessment in wire–arc additive manufacturing (2019)
Journal Article
Dryburgh, P., Pieris, D., Martina, F., Patel, R., Sharples, S., Li, W., …Smith, R. J. (2019). Spatially resolved acoustic spectroscopy for integrity assessment in wire–arc additive manufacturing. Additive Manufacturing, 28, 236-251. https://doi.org/10.1016/j.addma.2019.04.015

Wire-arc additive manufacturing (WAAM) is an emergent method for the production and repair of high value components. Introduction of plastic strain by inter-pass rolling has been shown to produce grain refinement and improve mechanical properties, ho... Read More about Spatially resolved acoustic spectroscopy for integrity assessment in wire–arc additive manufacturing.

Spatially Resolved Acoustic Spectroscopy Towards Online Inspection of Additive Manufacturing (2019)
Journal Article
Pieris, D., Patel, R., Dryburgh, P., Hirsch, M., Li, W., Sharples, S., …Clark, M. (2019). Spatially Resolved Acoustic Spectroscopy Towards Online Inspection of Additive Manufacturing. Insight - Non-Destructive Testing & Condition Monitoring, 61(3), 132-137. https://doi.org/10.1784/insi.2019.61.3.132

High-integrity engineering applications such as aerospace will not permit the incorporation of components containing any structural defects. The current generation of additive manufacturing (AM) platforms yield components with relatively high level... Read More about Spatially Resolved Acoustic Spectroscopy Towards Online Inspection of Additive Manufacturing.

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), https://doi.org/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 about Imaging material texture of as-deposited selective laser melted parts using spatially resolved acoustic spectroscopy.

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 about Spatially resolved acoustic spectroscopy additive manufacturing: towards online inspection.

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. https://doi.org/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 about Crystallographic texture can be rapidly determined by electrochemical surface analytics.