All Outputs (16)

Ceria-coated replicated aluminium sponges as catalysts for the CO-water gas shift process (2020)
Journal Article
Palma, V., Goodall, R., Thompson, A., Ruocco, C., Renda, S., Leach, R., & Martino, M. (2021). Ceria-coated replicated aluminium sponges as catalysts for the CO-water gas shift process. International Journal of Hydrogen Energy, 46(22), 12158-12168. https://doi.org/10.1016/j.ijhydene.2020.04.065

A study on the use of chemical conversion coating as a preparative technique for foam-based structured catalysts, in the water gas shift reaction, is presented. The results showed a significant correlation between the textural properties of the struc... Read More about Ceria-coated replicated aluminium sponges as catalysts for the CO-water gas shift process.

Mechanical vibration bandgaps in surface-based lattices (2018)
Journal Article
Elmadih, W., Syam, W. P., Maskery, I., Chronopoulos, D., & Leach, R. (2019). Mechanical vibration bandgaps in surface-based lattices. Additive Manufacturing, 25, 421-429. https://doi.org/10.1016/j.addma.2018.11.011

In this paper, the phonon dispersion curves of several surface-based lattices are examined, and their energy transmission spectra, along with the corresponding bandgaps are identified. We demonstrate that these bandgaps may be controlled, or tuned, t... Read More about Mechanical vibration bandgaps in surface-based lattices.

A self-calibration rotational stitching method for precision measurement of revolving surfaces (2018)
Journal Article
Liu, M., Cheung, C., Feng, X., Wang, C., & Leach, R. (in press). A self-calibration rotational stitching method for precision measurement of revolving surfaces. Precision Engineering, https://doi.org/10.1016/j.precisioneng.2018.05.002

When measuring revolving objects, it is often desired to obtain not only the geometrical form of the workpiece, but also the topography of the surface, as they both affect the performance of the part. However, holistic measurement of the entire three... Read More about A self-calibration rotational stitching method for precision measurement of revolving surfaces.

Hierarchical-information-based characterization of multiscale structured surfaces (2018)
Journal Article
Cheung, C. F., Liu, M., Leach, R., Feng, X., & Zhao, C. (2018). Hierarchical-information-based characterization of multiscale structured surfaces. CIRP Annals - Manufacturing Technology, 67(1), 539-542. https://doi.org/10.1016/j.cirp.2018.04.002

© 2018 This paper presents a hierarchical-information-based characterization method for multiscale structured surfaces. The method makes use of a priori information of the multiscale surface and a hierarchical segmentation–registration (HSR) algorith... Read More about Hierarchical-information-based characterization of multiscale structured surfaces.

Noise evaluation of a point autofocus surface topography measuring instrument (2018)
Journal Article
Maculotti, G., Feng, X., Galetto, M., & Leach, R. K. (2018). Noise evaluation of a point autofocus surface topography measuring instrument. Measurement Science and Technology, 29(6), https://doi.org/10.1088/1361-6501/aab528

In this work, the measurement noise of a point autofocus surface topography measuring instrument is evaluated, as the first step towards establishing a route to traceability for this type of instrument. The evaluation is based on the determination of... Read More about Noise evaluation of a point autofocus surface topography measuring instrument.

3-dimensional inkjet printing of macro structures from silver nanoparticles (2017)
Journal Article
Vaithilingam, J., Saleh, E., Körner, L., Wildman, R. D., Hague, R. J., Leach, R. K., & Tuck, C. J. (2018). 3-dimensional inkjet printing of macro structures from silver nanoparticles. Materials and Design, 139, https://doi.org/10.1016/j.matdes.2017.10.070

The adoption of additive manufacturing technology is gaining interest for processing precious metals. In this study, the capability of inkjet printing was explored to fabricate macroscopic parts from commercial silver nanoparticle ink (AgNPs). A besp... Read More about 3-dimensional inkjet printing of macro structures from silver nanoparticles.

Characterisation of the topography of metal additive surface features with different measurement technologies (2017)
Journal Article
Senin, N., Thompson, A., & Leach, R. K. (2017). Characterisation of the topography of metal additive surface features with different measurement technologies. Measurement Science and Technology, 28(9), Article 095003. https://doi.org/10.1088/1361-6501/aa7ce2

© 2017 IOP Publishing Ltd. The challenges of measuring the surface topography of metallic surfaces produced by additive manufacturing are investigated. The differences between measurements made using various optical and non-optical technologies, incl... Read More about Characterisation of the topography of metal additive surface features with different measurement technologies.

Staged thermomechanical testing of nickel superalloys produced by selective laser melting (2017)
Journal Article
Xu, Z., Hyde, C. J., Thompson, A., Leach, R. K., Maskery, I., Tuck, C., & Clare, A. T. (2017). Staged thermomechanical testing of nickel superalloys produced by selective laser melting. Materials and Design, 133, 520-527. https://doi.org/10.1016/j.matdes.2017.08.009

The creep performance of additively manufactured components remains an issue before additive manufacturing can be put fully implemented. In this study, Inconel 718 two-bar specimens are produced by selective laser melting and subjected to a ‘staged’... Read More about Staged thermomechanical testing of nickel superalloys produced by selective laser melting.

X-ray computed tomography and additive manufacturing in medicine: a review (2017)
Journal Article
Thompson, A., McNally, D., Maskery, I., & Leach, R. K. (in press). X-ray computed tomography and additive manufacturing in medicine: a review. International Journal of Metrology and Quality Engineering, 8, Article 17. https://doi.org/10.1051/ijmqe/2017015

The use of X-ray computed tomography (XCT) with additive manufacture (AM) within a medical context is examined in this review. The seven AM process families and various XCT scanning techniques are explained in brief, and the use of these technologies... Read More about X-ray computed tomography and additive manufacturing in medicine: a review.

Verification of micro-scale photogrammetry for smooth three-dimensional object measurement (2017)
Journal Article
Sims-Waterhouse, D., Piano, S., & Leach, R. (2017). Verification of micro-scale photogrammetry for smooth three-dimensional object measurement. Measurement Science and Technology, 28(5), Article 055010. https://doi.org/10.1088/1361-6501/aa6364

© 2017 IOP Publishing Ltd. By using sub-millimetre laser speckle pattern projection we show that photogrammetry systems are able to measure smooth three-dimensional objects with surface height deviations less than 1 μm. The projection of laser speckl... Read More about Verification of micro-scale photogrammetry for smooth three-dimensional object measurement.

Shape descriptors and statistical classification on areal topography data for tile inspection in tessellated surfaces (2016)
Journal Article
Senin, N., Moretti, M., & Leach, R. K. (2017). Shape descriptors and statistical classification on areal topography data for tile inspection in tessellated surfaces. Measurement, 95, https://doi.org/10.1016/j.measurement.2016.09.044

Verification of conformance to design specifications in production, and identification of defects related to wear or other damage during maintenance, are key metrological aspects that must be addressed for micro-scale tessellated surfaces. A new algo... Read More about Shape descriptors and statistical classification on areal topography data for tile inspection in tessellated surfaces.

Phase and fringe order determination in wavelength scanning interferometry (2016)
Journal Article
Moschetti, G., Forbes, A., Leach, R. K., Jiang, X., & O'Connor, D. (2016). Phase and fringe order determination in wavelength scanning interferometry. Optics Express, 24(8), 8997-9012. https://doi.org/10.1364/OE.24.008997

A method to obtain unambiguous surface height measurements using wavelength scanning interferometry with an improved repeatability, comparable to that obtainable using phase shifting interferometry, is reported. Rather than determining the conventio... Read More about Phase and fringe order determination in wavelength scanning interferometry.

Performance assessment of a new variable stiffness probing system for micro-CMMs (2016)
Journal Article
Alblahaihid, K., Kinnell, P., Lawes, S., Desgaches, D., & Leach, R. K. (2016). Performance assessment of a new variable stiffness probing system for micro-CMMs. Sensors, 16(4), Article 492. https://doi.org/10.3390/s16040492

When designing micro-scale tactile probes, a design trade-off must be made between the stiffness and flexibility of the probing element. The probe must be flexible enough to ensure sensitive parts are not damaged during contact, but it must be stiff... Read More about Performance assessment of a new variable stiffness probing system for micro-CMMs.

Review of post-process optical form metrology for industrial-grade metal additive manufactured parts (2016)
Journal Article
Stavroulakis, P., & Leach, R. K. (2016). Review of post-process optical form metrology for industrial-grade metal additive manufactured parts. Review of Scientific Instruments, 87(4), Article 041101. https://doi.org/10.1063/1.4944983

The scope of this review is to investigate the main post-process optical form measurement technologies available in industry today and to determine whether they are applicable to industrial-grade metal additive manufactured parts. An in-depth review... Read More about Review of post-process optical form metrology for industrial-grade metal additive manufactured parts.

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, 431-445. https://doi.org/10.1016/j.matdes.2016.01.099

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 about Review of in-situ process monitoring and in-situ metrology for metal additive manufacturing.

Study of manufacturing and measurement reproducibility on a laser textured structured surface (2016)
Journal Article
MacAulay, G. D., Senin, N., Giusca, C. L., & Leach, R. K. (2016). Study of manufacturing and measurement reproducibility on a laser textured structured surface. Measurement, 94, 942-948. https://doi.org/10.1016/j.measurement.2016.03.042

In recent years there has been increasing interest in the use of structured surfaces to provide specific functional performance. Such surfaces often consist of localised micro-scale surface features with predetermined geometries. The performance of t... Read More about Study of manufacturing and measurement reproducibility on a laser textured structured surface.