All Outputs (5)

Spatially Resolved Acoustic Spectroscopy Towards Online Inspection of Additive Manufacturing (2018)
Conference Proceeding
Milesh Pieris, D., Patel, R., Dryburgh, P., Hirsch, M., Li, W., Sharples, S. D., …Clark, M. (2018). Spatially Resolved Acoustic Spectroscopy Towards Online Inspection of Additive Manufacturing. In 57th Annual Conference of the British Institute of Non-Destructive Testing

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 Towards Online Inspection of Additive Manufacturing.

Targeted rework of powder bed fusion additive manufacturing (2018)
Conference Proceeding
Dryburgh, P., Patel, R., Catchpole-Smith, S., Hirsch, M., Parry, 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 about Targeted rework of powder bed fusion additive manufacturing.

Cell imaging using sub-optical wavelength ultrasonics (2015)
Conference Proceeding
Clark, M., Marques, L., Moradi, E., Perez-Cota, F., Smith, R. J., & Webb, K. F. (2015). Cell imaging using sub-optical wavelength ultrasonics. In Proceedings Asia Communications and Photonics Conference 2015. https://doi.org/10.1364/acpc.2015.asu5h.1

At GHz frequencies the wavelength of ultrasound becomes comparable or smaller than the wavelength of light and so offers an intriguing way to image at the small scale. In this paper we report on new developments in pico-second laser ultrasonics that... Read More about Cell imaging using sub-optical wavelength ultrasonics.

Widefield ultrastable heterodyne interferometry using a custom CMOS modulated light camera (2011)
Conference Proceeding
Patel, R., Clark, M., & Achamfuo-Yeboah, S. (2011). Widefield ultrastable heterodyne interferometry using a custom CMOS modulated light camera.

A method of detecting optical heterodyne interference fringes using a custom CMOS modulated light camera array has been developed. Widefield phase images are generated using quadrature demodulation and are kept stable using a feedback system. © 2011... Read More about Widefield ultrastable heterodyne interferometry using a custom CMOS modulated light camera.

The Design of a Real Time VLSI Optical Centroid Processor (2002)
Conference Proceeding
Pui, B. H., Hayes-Gill, B., Clark, M., Somekh, M., See, C., Morgan, S., & Ng, A. (2002). The Design of a Real Time VLSI Optical Centroid Processor. In IEEE Sensors 2002 : first IEEE International Conference on Sensors. https://doi.org/10.1109/ICSENS.2002.1036977

A real time VLSI optical centroid processor has been developed as part of a larger Shack-Hartmann wavefront sensor system for applications in adaptive optics. The implementation of the optical centroid detection system was demonstrated successfully u... Read More about The Design of a Real Time VLSI Optical Centroid Processor.