Feature-based characterisation of evolving surface topographies in finishing operations for additive manufacturing

Newton, Lewis; Senin, Nicola; Smith, Bethan; Leach, Richard

Metrological design of calibration and benchmarking artefacts for an additive manufacturing system (2018)
Conference Proceeding

Development of mathematical reference standards for the validation of surface texture parameter calculation software (2018)
Conference Proceeding

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.

In-process measurement of the surface quality for a novel finishing process for polymer additive manufacturing (2018)
Journal Article

In the last decade, there has been considerable growth in the production of end-use polymer parts and components using additive manufacturing methods. A wide range of polymers, from Nylon-12 to thermoplastic polyurethane polymers, can be processed wi... Read More about In-process measurement of the surface quality for a novel finishing process for polymer additive manufacturing.

Information-rich surface metrology (2018)
Journal Article

Information-rich metrology refers to the incorporation of any type of available information in the data acquisition and processing pipeline of a measurement process, in order to improve the efficiency and quality of the measurement. In this work, the... Read More about Information-rich surface metrology.

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.

Curvature-based segmentation of powder bed point clouds for in-process monitoring (2018)
Conference Proceeding

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.

Artificial intelligence-enhanced multi-material form measurement for additive materials (2018)
Presentation / Conference

Correlating volume and surface features in additively manufactured metal parts (2018)
Conference Proceeding

In-process measurement and monitoring of a polymer laser sintering powder bed with fringe projection (2018)
Journal Article

We investigate the feasibility of using fringe projection to monitor the powder bed of a polyamide 12 polymer laser sintering machine. In particular, we demonstrate the ability of fringe projection to identify a number of defects arising during the p... Read More about In-process measurement and monitoring of a polymer laser sintering powder bed with fringe projection.

Benchmarking of an additive manufacturing process (2018)
Conference Proceeding

Design of a multi-sensor in-situ inspection system for additive manufacturing (2018)
Conference Proceeding

Focus variation measurement of metal additively manufactured surfaces (2018)
Presentation / Conference

Band gap behavior of optimal one-dimensional composite structures with an additive manufactured stiffener (2018)
Journal Article

In this work, the banded behaviour of composite one-dimensional structures with an additive manufactured stiffener is examined. A finite element method is used to calculate the stiffness, mass and damping matrices, and periodic structure theory is us... Read More about Band gap behavior of optimal one-dimensional composite structures with an additive manufactured stiffener.

Internal surface measurement by X-ray computed tomography: an additive manufacturing industrial case study (2018)
Conference Proceeding

Effects of sinogram interpolation for increasing throughput rate of surface topography measurements using X-ray computed tomography (2018)
Presentation / Conference

Error modelling and validation of a high-precision five degree of freedom hybrid mechanism for high-power high-repetition rate laser operations (2018)
Journal Article

The accuracy, repeatability and speed requirements of high-power laser operations demand the employment of five degree of freedom motion control solutions that are capable of positioning and orientating the target with respect to the laser(s)-target... Read More about Error modelling and validation of a high-precision five degree of freedom hybrid mechanism for high-power high-repetition rate laser operations.

A programmable software framework for the generation of simulated surface topography (2018)
Conference Proceeding

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.

The effects of vibration on fringe projection systems (2018)
Conference Proceeding

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

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.

Feature-based characterisation of evolving surface topographies in finishing operations for additive manufacturing (2018)
Presentation / Conference

Finishing operations play a fundamental role in the additive manufacture of components. Conventional surface metrology solutions allow for the characterisation of surface roughness through texture parameters, but are not fully suitable to capture the... Read More about Feature-based characterisation of evolving surface topographies in finishing operations for additive manufacturing.

All Outputs (196)