All Outputs (61)

Verification of a rigorous 2D model of rough surface scattering (2018)
Conference Proceeding
Thomas, M., Leach, R., Nikolaev, N., Widjanarko, T., Senin, N., Aryan, H., & Coupland, J. (2018). Verification of a rigorous 2D model of rough surface scattering.

A rigorous two-dimensional (2D) model of electromagnetic surface scatter has been developed, based on a boundary element method (BEM) established by Simonsen [1]. Simulated far-field scatter is compared to that measured from a laser scatterometer for... Read More about Verification of a rigorous 2D model of rough surface scattering.

Metrological design of calibration and benchmarking artefacts for an additive manufacturing system (2018)
Conference Proceeding
Rivas Santos, V., Sims-Waterhouse, D., Piano, S., Maskery, I., Leach, R., Papastavrou, M., …Woolliams, P. (2018). Metrological design of calibration and benchmarking artefacts for an additive manufacturing system

Development of mathematical reference standards for the validation of surface texture parameter calculation software (2018)
Conference Proceeding
Todhunter, L., Leach, R., Lawes, S., Blateyron, F., & Harris, P. (2018). Development of mathematical reference standards for the validation of surface texture parameter calculation software. In n/a

A framework for the validation of surface texture parameter calculation software is proposed. The framework utilises mathematically defined surfaces and mathematically calculated surface texture parameter values to produce a reference against which t... Read More about Development of mathematical reference standards for the validation of surface texture parameter calculation software.

Curvature-based segmentation of powder bed point clouds for in-process monitoring (2018)
Conference Proceeding
Chung Chee Law, A., Southon, N., Senin, N., Stavroulakis, P., Leach, R., Goodridge, R., & Kong, Z. (2018). Curvature-based segmentation of powder bed point clouds for in-process monitoring. In 29th Annual International Solid Freeform Fabrication Symposium - an Additive Manufacturing Conference 2018

This paper presents a curvature-based analysis of point clouds collected in-process with fringe projection in a polymer powder bed fusion process. The three-dimensional point clouds were obtained from outside of the build chamber with a fringe projec... Read More about Curvature-based segmentation of powder bed point clouds for in-process monitoring.

Correlating volume and surface features in additively manufactured metal parts (2018)
Conference Proceeding
Thompson, A., Tammas-Williams, S., Senin, N., Todd, I., & Leach, R. (2018). Correlating volume and surface features in additively manufactured metal parts.

Design of a multi-sensor in-situ inspection system for additive manufacturing (2018)
Conference Proceeding
Dickins, A., Widjanarko, T., Lawes, S., Stravroulakis, P., & Leach, R. (2018). Design of a multi-sensor in-situ inspection system for additive manufacturing

Benchmarking of an additive manufacturing process (2018)
Conference Proceeding
Rivas Santos, V., Maskery, I., Sims-Waterhouse, D., Thompson, A., Leach, R., Ellis, A., & Woolliams, P. (2018). Benchmarking of an additive manufacturing process

Internal surface measurement by X-ray computed tomography: an additive manufacturing industrial case study (2018)
Conference Proceeding
Thompson, A., Maskery, I., & Leach, R. (2018). Internal surface measurement by X-ray computed tomography: an additive manufacturing industrial case study.

A programmable software framework for the generation of simulated surface topography (2018)
Conference Proceeding
Todhunter, L. D., Senin, N., Leach, R., Lawes, S., Blateyron, F., & Harris, P. (2018). A programmable software framework for the generation of simulated surface topography.

A flexible and programmable software framework has been developed that enables the creation of simulated, areal surface topography datasets. The framework allows the creation of surfaces through a layered approach where deterministic topographic stru... Read More about A programmable software framework for the generation of simulated surface topography.

Development of an X-ray simulator: from STTL file to grey scale image (2018)
Conference Proceeding
Korner, L., Leach, R., & Lawes, S. (2018). Development of an X-ray simulator: from STTL file to grey scale image. In Proceedings of the 18th International conference of the European Society for Precision Engineering and Nanotechnology (euspen), 503-504

The effects of vibration on fringe projection systems (2018)
Conference Proceeding
Bointon, P., Todhunter, L., Stavroulakis, P., Clare, A., & Leach, R. (2018). The effects of vibration on fringe projection systems.

Mechanical vibration noise is a significant source of error in precision measuring instruments. Errors due to vibration can be detected in measurement signals, and so methods to control mechanical vibration must be considered throughout the design pr... Read More about The effects of vibration on fringe projection systems.

Lateral error compensation for focus variation microscopy (2018)
Conference Proceeding
Pérez, P., Syam, W. P., Albajez, J. A., Santolaria, J., & Leach, R. (2018). Lateral error compensation for focus variation microscopy.

Focus variation microscopy measures both the areal form and areal surface texture of components. Improvements to the accuracy and precision of focus variation microscopes usually requires measurements with multiple image-fields to compensate lateral... Read More about Lateral error compensation for focus variation microscopy.

Measurement noise calibration, noise bandwidth specification and environment effects in a 3D point autofocusing instrument (2018)
Conference Proceeding
Leach, R., Feng, X., Galetto, M., & Maculotti, G. (2018). Measurement noise calibration, noise bandwidth specification and environment effects in a 3D point autofocusing instrument

Flexible software framework for the generation of simulated surface topography (2018)
Conference Proceeding
TODHUNTER, L., SENIN, N., LEACH, R., LAWES, S., BLAYTERON, F., & HARRIS, P. (2018). Flexible software framework for the generation of simulated surface topography

Development of mathematically-defined surfaces (2017)
Conference Proceeding
Todhunter, L. D., Leach, R., Lawes, S., Harris, P., & Blateyron, F. (2017). Development of mathematically-defined surfaces.

New software has been developed that enables the creation of areal surface topography representations. The goal of this software package is to utilise the mathematically-defined surface representations in the development of surface texture parameter... Read More about Development of mathematically-defined surfaces.

Additively manufactured lattice structures for precision engineering applications (2017)
Conference Proceeding
Elmadih, W. A., Syam, W. P., Maskery, I., & Leach, R. (2017). Additively manufactured lattice structures for precision engineering applications.

Error modelling of a hybrid five degree of freedom mechanism for manipulation of high repetition rate laser microtargets (2017)
Conference Proceeding
Karim, S., Piano, S., Leach, R., & Tolley, M. (2017). Error modelling of a hybrid five degree of freedom mechanism for manipulation of high repetition rate laser microtargets. In Proceedings of the twenty-eighth Annual Meeting of the American Society for Precision Engineering

Defect evolution in laser powder bed fusion additive manufactured components during thermo-mechanical testing (2017)
Conference Proceeding
Xu, Z., Hyde, C. J., Thompson, A., Leach, R. K., Maskery, I., Tuck, C., & Clare, A. T. (2017). Defect evolution in laser powder bed fusion additive manufactured components during thermo-mechanical testing.

The mechanical performance of additively manufactured (AM) components remains an issue, limiting the implementation of AM technologies. In this work, a new method is presented, to examine the evolution of defects in an Inconel 718 two-bar test specim... Read More about Defect evolution in laser powder bed fusion additive manufactured components during thermo-mechanical testing.

True-color 3D surface metrology for additive manufacturing using interference microscopy (2017)
Conference Proceeding
DiSciacca, J., Gomez, C., Thompson, A., Lawes, S., Leach, R., Colonna de Lega, X., & de Groot, P. (2017). True-color 3D surface metrology for additive manufacturing using interference microscopy.

Coherence scanning interferometry (CSI) is widely used for surface topography characterisation. With the ability to measure both rough surfaces with the high slopes and optical finishes, CSI has made contibutions in fields from industrial machining t... Read More about True-color 3D surface metrology for additive manufacturing using interference microscopy.

Optimisation of surface topography characterisation for metal additive manufacturing using coherence scanning interferometry (2017)
Conference Proceeding
Gómez, C. A., Su, R., Thompson, A., DiSciacca, J., Lawes, S., & Leach, R. K. (2017). Optimisation of surface topography characterisation for metal additive manufacturing using coherence scanning interferometry.

The surface topography of metal additive manufactured (AM) parts can be challenging to measure due to the presence of complex features, such as high slopes, step like recesses and protuberances, and local variations in reflectance. Recent innovations... Read More about Optimisation of surface topography characterisation for metal additive manufacturing using coherence scanning interferometry.