All Outputs (61)

Feature-based characterisation of laser powder bed fusion surfaces (2017)
Conference Proceeding

A novel algorithmic pipeline for the automated identification and dimensional/geometric characterisation of topographic formations of interest (surface features) is proposed, specifically aimed at the investigation of signature features left by laser... Read More about Feature-based characterisation of laser powder bed fusion surfaces.

An analysis of Type F2 software measurement standards for profile surface texture parameters [Abstract] (2017)
Conference Proceeding

The application of composite through-thickness assessment to additively manufactured structures (2017)
Conference Proceeding

This study looks into the applicability of through-thickness assessment to additive manufacturing (AM) carbon-fibre reinforced polymers (CFRPs). The study utilised a material extrusion printer that uses fused filament fabrication and composite filame... Read More about The application of composite through-thickness assessment to additively manufactured structures.

Results of an industrial survey on the use of surface texture parameters (2017)
Conference Proceeding

In 1999, CIRP conducted an industrial survey of the use of surface texture parameters [1]. In the seventeen years since, much has changed, with the most important advancement being the introduction of areal surface texture parameters as described in... Read More about Results of an industrial survey on the use of surface texture parameters.

Design of mechanically-optimised lattice structures for vibration isolation (2017)
Conference Proceeding

In this study, we investigate the use of additively manufactured strut-based lattice structures to enhance the mechanical vibration isolation properties of a structure. Three lattice designs, inspired by the common strut-based lattice structures, are... Read More about Design of mechanically-optimised lattice structures for vibration isolation.

Focus variation measurement of electron beam melted surfaces (2017)
Conference Proceeding

Electron beam melting (EBM) is a promising additive manufacturing process which is seeing increasing use in high value manufacturing sectors such as aerospace [1]. With its layer-by-layer approach, EBM can allow the creation of parts of complex shape... Read More about Focus variation measurement of electron beam melted surfaces.

Detecting the signature of motion stage non-linearity for focus variation microscopy using measurement noise and surface topography repeatability (2017)
Conference Proceeding

Measurement noise is one of the ISO-proposed metrological characteristics of areal surface texture instruments [1, 2, 3, 4]. Measurement noise includes all of the unwanted contributions to the output signals when the instrument is used in its normal... Read More about Detecting the signature of motion stage non-linearity for focus variation microscopy using measurement noise and surface topography repeatability.

Measurement noise of a point autofocus surface topography instrument (2017)
Conference Proceeding

Optical instruments for areal topography measurement can be especially sensitive to noise when scanning is required. Such noise has different sources, including those internally generated and external sources from the environment [1].For some instrum... Read More about Measurement noise of a point autofocus surface topography instrument.

An industrial survey on the use of surface texture parameters (2017)
Conference Proceeding

In 1999, CIRP conducted an industrial survey of the use of surface texture parameters [1]. In the seventeen years since, much has changed, with the most important advancement being the introduction of areal surface texture parameters as described in... Read More about An industrial survey on the use of surface texture parameters.

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.

Coherence scanning interferometry for additive manufacture (2017)
Conference Proceeding

Additive manufacture (AM) of metal components is a rapidly maturing technology; but given the large number of interrelated process parameters, it remains difficult to control to high precision. It has been observed that processing conditions may be a... Read More about Coherence scanning interferometry for additive manufacture.

Tolerance on sphere radius for the calibration of the transfer function of coherence scanning interferometry (2017)
Conference Proceeding

Although coherence scanning interferometry (CSI) commonly achieves a sub-nanometre noise level in surface topography measurement, the absolute accuracy is difficult to determine when measuring a surface that contains varying local slope angles and cu... Read More about Tolerance on sphere radius for the calibration of the transfer function of coherence scanning interferometry.

High-precision lateral distortion correction in coherence scanning interferometry using an arbitrary surface (2017)
Conference Proceeding

Calibration of coherence scanning interferometry and the effects of defocus (2017)
Conference Proceeding

Optical difference engine for defect inspection in highly-parallel manufacturing processes (2017)
Conference Proceeding

Traditional defect inspection for highly-parallel manufacturing processes requires the processing of large measurement datasets, which is often not fast enough for in-situ inspection of large areas with high resolution. This study develops an all-opt... Read More about Optical difference engine for defect inspection in highly-parallel manufacturing processes.

A metrology horror story: the additive surface (2017)
Conference Proceeding

Measurement noise of a coherence scanning interferometer in an industrial environment (2016)
Conference Proceeding

Investigating mechanical characteristics of styli for micro-CMMs (2016)
Conference Proceeding

The mechanical characteristics of styli for micro coordinate measuring machines (micro-CMMs) is of importance because of the major effect the styli have on the performance and capability of micro-CMMs. Previous work has focussed on the design of the... Read More about Investigating mechanical characteristics of styli for micro-CMMs.

Towards uncertainty in dimensional metrology of surface features for advanced manufacturing (2016)
Conference Proceeding

In previous work, an original approach was developed for the dimensional characterisation of surface features on parts and test artefacts, aimed at supporting researchers involved in the study of advanced manufacturing processes. In the approach, met... Read More about Towards uncertainty in dimensional metrology of surface features for advanced manufacturing.

An integrated measurement method for complex micro-scale geometries (2016)
Conference Proceeding

Micro-scale geometries are becoming commonplace in many high-precision manufacturing applications. Micro-drilling processes, for example, are being employed for producing holes in demanding applications involving fluid transfer, atomisers and micro-m... Read More about An integrated measurement method for complex micro-scale geometries.