All Outputs (49)

Using cohesive zone models with digital image correlation to obtain a mixed mode I/II fracture envelope of a tough epoxy (2023)
Journal Article

This work describes a method in which the digital image correlation (DIC) method and finite element analysis (FEA) were used to create a quasi-static mixed-mode fracture envelope for bonded joints consisting of 2024-T3 Al adherends and a tough struct... Read More about Using cohesive zone models with digital image correlation to obtain a mixed mode I/II fracture envelope of a tough epoxy.

On the development of twinning-induced plasticity in additively manufactured 316L stainless steel (2023)
Journal Article

A report on twinning-induced plasticity in 316L stainless steel manufactured by metal additive manufacturing (AM) is presented. A tapered tensile test geometry was used which enabled the investigation of twin formation over a range of strain levels i... Read More about On the development of twinning-induced plasticity in additively manufactured 316L stainless steel.

New structure-performance relationships for surface-based lattice heat sinks (2023)
Journal Article

Heat sinks have manifold applications, from micro-electronics to nuclear fusion reactors. Their performance expectations will continue to increase in line with the power consumption and miniaturisation of technology. Additive manufacturing enables t... Read More about New structure-performance relationships for surface-based lattice heat sinks.

Creep Characterization of Inconel 718 Lattice Metamaterials Manufactured by Laser Powder Bed Fusion (2023)
Journal Article

Lattice metamaterials manufactured by laser powder bed fusion (LPBF) are limited by their performance for critical applications. LPBF materials have microstructural or macroscale anomalies, such as suboptimal grain size, morphology, and lack of fusio... Read More about Creep Characterization of Inconel 718 Lattice Metamaterials Manufactured by Laser Powder Bed Fusion.

Measurement of powder spreading dynamics in additive manufacturing (2023)
Conference Proceeding

In this work, we examine the effect of the state of the pre-processing powder bed in powder-based additive manufacturing, particularly in metal laser powder bed fusion (PBF-LB). The spreading of the powder layer has been identified as a critical but... Read More about Measurement of powder spreading dynamics in additive manufacturing.

A comprehensive characterization of fracture in unit cell open foams generated from Triply Periodic Minimal Surfaces (2022)
Journal Article

The main scope of the proposed study is to assess the occurrence of fracture in Triply Periodic Minimal Surfaces (TPMS) foams subjected to compressive loading. TPMS, developed by the mathematics community, may be exploited as a backbone for developin... Read More about A comprehensive characterization of fracture in unit cell open foams generated from Triply Periodic Minimal Surfaces.

FLatt Pack: A research-focussed lattice design program (2021)
Journal Article

Lattice structures are an important aspect of design for additive manufacturing (DfAM). They enable significant component light-weighting and the tailoring of a wide range of physical responses; mechanical, thermal, acoustic, etc. In turn, lattice de... Read More about FLatt Pack: A research-focussed lattice design program.

Low thermal expansion machine frame designs using lattice structures (2021)
Journal Article

In this work, we investigated tessellating cellular (or lattice) structures for use in a low thermal expansion machine frame. We proposed a concept for a lattice structure with tailorable effective coefficient of thermal expansion (CTE). The design i... Read More about Low thermal expansion machine frame designs using lattice structures.

Additively manufactured ultra-high vacuum chamber for portable quantum technologies (2021)
Journal Article

© 2021 Additive manufacturing is having a dramatic impact on research and industry across multiple sectors, but the production of additively manufactured systems for ultra-high vacuum applications has so far proved elusive and widely been considered... Read More about Additively manufactured ultra-high vacuum chamber for portable quantum technologies.

The deformation and elastic anisotropy of a new gyroid-based honeycomb made by laser sintering (2020)
Journal Article

© 2020 The Author(s) The stiffness, anisotropy and structural deformation of three gyroid-based lattices was investigated, with particular focus on a newly proposed honeycomb gyroid. This honeycomb is based on a modified triply periodic minimal surfa... Read More about The deformation and elastic anisotropy of a new gyroid-based honeycomb made by laser sintering.

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.

Rainbow metamaterials for broadband multi-frequency vibration attenuation: Numerical analysis and experimental validation (2019)
Journal Article

In this study, we propose a ‘rainbow’ metamaterial to achieve broadband multi-frequency vibration attenuation. The rainbow metamaterial is constituted of a Π-shaped beam partitioned into substructures by parallel plates insertions with two attached c... Read More about Rainbow metamaterials for broadband multi-frequency vibration attenuation: Numerical analysis and experimental validation.

Optimal design of rainbow elastic metamaterials (2019)
Journal Article

In this study, we present an optimization scheme for the resonator distribution in rainbow metamaterials that are constitutive of a ?-shaped beam with parallel plate insertions and two sets of spatially varying cantilever-mass resonators. To improve... Read More about Optimal design of rainbow elastic metamaterials.

Three-dimensional resonating metamaterials for low-frequency vibration attenuation (2019)
Journal Article

Recent advances in additive manufacturing have enabled fabrication of phononic crystals and metamaterials which exhibit spectral gaps, or stopbands, in which the propagation of elastic waves is prohibited by Bragg scattering or local resonance effect... Read More about Three-dimensional resonating metamaterials for low-frequency vibration attenuation.

Multidimensional Phononic Bandgaps in Three-Dimensional Lattices for Additive Manufacturing (2019)
Journal Article

We report on numerical modelling of three-dimensional lattice structures designed to provide phononic bandgaps. The examined lattice structures rely on two distinct mechanisms for bandgap formation: the destructive interference of elastic waves and i... Read More about Multidimensional Phononic Bandgaps in Three-Dimensional Lattices for Additive Manufacturing.

Mechanical vibration bandgaps in surface-based lattices (2018)
Journal Article

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.

Designing low frequency band gaps in additively manufactured parts using internal resonators (2018)
Conference Proceeding

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

Benchmarking of an additive manufacturing process (2018)
Conference Proceeding

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