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Outputs (44)

Investigating the variation of particle distribution and surface texture of top surfaces based on build position in laser powder bed fusion (2024)
Journal Article

Quality analysis of additively manufactured (AM) surfaces is complex, yet critical for determining the functionality of parts and technology improvement. To accurately assess the quality of AM parts, it is necessary to consider the industrial applica... Read More about Investigating the variation of particle distribution and surface texture of top surfaces based on build position in laser powder bed fusion.

Review of material measures for surface topography instrument calibration and performance verification (2023)
Journal Article

As the need for the manufacturing of complex surface topographies increases, traceable measurement with known uncertainties can allow a manufacturing process to remain stable. Material measures are the link in the chain that connects the surface topo... Read More about Review of material measures for surface topography instrument calibration and performance verification.

Comparison of coherence scanning interferometry, focus variation and confocal microscopy for surface topography measurement (2023)
Conference Proceeding

The most common optical technologies for surface topography measurement are coherence scanning interferometry (CSI), focus variation microscopy (FV) and imaging confocal microscopy (CM). Due to the benefits and drawbacks of each, these instruments ar... Read More about Comparison of coherence scanning interferometry, focus variation and confocal microscopy for surface topography measurement.

Stable large area drop-on-demand deposition of a conductive polymer ink for 3D-printed electronics, enabled by bio-renewable co-solvents (2023)
Journal Article

Development of conductive polymer ink formulations with reliable jetting stability and physical properties could offer sustainable routes for scaling-up the 3D-printing of electronics. We report a new poly(3,4-ethylenedioxythiophene) polystyrene sulp... Read More about Stable large area drop-on-demand deposition of a conductive polymer ink for 3D-printed electronics, enabled by bio-renewable co-solvents.

Metrological characteristics for the calibration of surface topography measuring instruments: a review (2020)
Journal Article

In this paper, we will review the development and use of an ISO standardised framework to allow calibration of surface topography measuring instruments. We will draw on previous work to present the state of the art in the field in terms of employed m... Read More about Metrological characteristics for the calibration of surface topography measuring instruments: a review.

Design and characterisation of an additive manufacturing benchmarking artefact following a design-for-metrology approach (2019)
Journal Article

We present the design and characterisation of a high-speed sintering additive manufacturing benchmarking artefact following a design-for-metrology approach. In an important improvement over conventional approaches, the specifications and operating pr... Read More about Design and characterisation of an additive manufacturing benchmarking artefact following a design-for-metrology approach.

An interlaboratory comparison of X-ray computed tomography measurement for texture and dimensional characterisation of additively manufactured parts (2018)
Journal Article

This paper presents the results of the CT-STARR (CT-Surface Texture for Additive Round Robin) Stage 1 interlaboratory comparison. The study compared the results obtained for the extraction of areal surface texture data per ISO 25178-2 from five X-ray... Read More about An interlaboratory comparison of X-ray computed tomography measurement for texture and dimensional characterisation of additively manufactured parts.

Effects of magnification and sampling resolution in X-ray computed tomography for the measurement of additively manufactured metal surfaces (2018)
Journal Article

Recent studies have shown that X-ray computed tomography (XCT) can be used to measure the surface topography of additively manufactured parts. However, further research is necessary to fully understand XCT measurement performance. Here, we show how m... Read More about Effects of magnification and sampling resolution in X-ray computed tomography for the measurement of additively manufactured metal surfaces.

Optimisation of surface topography characterisation for metal additive manufacturing using coherence scanning interferometry (2017)
Conference Proceeding

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.

Defect evolution in laser powder bed fusion additive manufactured components during thermo-mechanical testing (2017)
Conference Proceeding

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.

Characterisation of the topography of metal additive surface features with different measurement technologies (2017)
Journal Article

© 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.

Optimization of surface measurement for metal additive manufacturing using coherence scanning interferometry (2017)
Journal Article

Surface topography measurement for metal additive manufacturing (AM) is a challenging task for contact and non-contact methods. In this paper, we present an experimental investigation of the use of coherence scanning interferometry (CSI) for measurem... Read More about Optimization of surface measurement for metal additive manufacturing using coherence scanning interferometry.

Results from an interlaboratory comparison of areal surface texture parameter extraction from X-ray computed tomography of additively manufactured parts (2017)
Conference Proceeding

This paper presents the results of the CT-STARR (CT-Surface Texture for Additive Round Robin) interlaboratory comparison. The study compares the results obtained for the extraction of areal surface texture data per ISO 25178-2 from five X-ray compute... Read More about Results from an interlaboratory comparison of areal surface texture parameter extraction from X-ray computed tomography of additively manufactured parts.

X-ray computed tomography of additively manufactured metal parts: the effect of magnification and reconstruction sampling on surface topography measurement (2017)
Conference Proceeding

X-ray computed tomography (XCT) has recently become recognised as a viable method of surface topography measurement for additively manufactured (AM) metal parts [1–5]. AM is capable of producing internal features that are inaccessible to other surfac... Read More about X-ray computed tomography of additively manufactured metal parts: the effect of magnification and reconstruction sampling on surface topography measurement.

“BAM”: a collaborative R&D project for the development of a simulation based solution for the design and manufacture of 3D woven composites (2017)
Conference Proceeding

Breakthrough Aerospace Materials (BAM) is a collaborative R&D project based in the UK [1]; led by industry and co-funded by the British Government via the Innovate-UK under its Aerospace Technology Institute (ATI) R&T Programme. The overall objective... Read More about “BAM”: a collaborative R&D project for the development of a simulation based solution for the design and manufacture of 3D woven composites.