S.M. Spearing
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View article: Questioning the Representativeness of Damage Mechanisms in Single‐Fiber Composites via In Situ Synchrotron X‐Ray Holo‐Tomography
Questioning the Representativeness of Damage Mechanisms in Single‐Fiber Composites via In Situ Synchrotron X‐Ray Holo‐Tomography Open
In fiber‐reinforced polymer composites, the fiber‐matrix interface controls stress transfer mechanisms, thereby affecting mechanical performance. Interfacial properties are often extracted via single‐fiber composite tests. In these tests, …
View article: Model-experiment comparison of quasi static loading on a composite overwrap pressure vessel (Part 2)
Model-experiment comparison of quasi static loading on a composite overwrap pressure vessel (Part 2) Open
A methodology to develop a 3D Finite Element (FE) model of a full metal-lined Composite Overwrapped Pressure Vessel (COPV) was developed and is presented in this paper. The model is intended for prediction of the metal-composite delaminati…
View article: Hard X-ray nanoscale Imaging of Carbon Fibre Composites using Near-Field Ptychography
Hard X-ray nanoscale Imaging of Carbon Fibre Composites using Near-Field Ptychography Open
Near-Field Ptychography (NFP) is a powerful technique that allows reconstruction of both the complex-valued illumination field and transmission function of the sample, owing to its data redundancy. When combined with tomography, NFP can pr…
View article: A novel particle-filled carbon-fibre reinforced polymer model composite tailored for the application of digital volume correlation and computed tomography
A novel particle-filled carbon-fibre reinforced polymer model composite tailored for the application of digital volume correlation and computed tomography Open
This paper presents the development of novel Carbon-Fibre Reinforced Polymer (CFRP) laminates, tailored for the application of Digital Volume Correlation (DVC) and Computed Tomography (CT) to experimental mechanics analyses of these materi…
View article: In situ statistical measurement of local morphology in carbon-epoxy composites using synchrotron X-ray computed tomography
In situ statistical measurement of local morphology in carbon-epoxy composites using synchrotron X-ray computed tomography Open
Models are still deficient in accurately reproducing the mechanisms that trigger tensile failure in unidirectional composites, highlighting a lack of direct experimental evidence. In this study, emphasis is given to the identification of c…
View article: The effects of voids in quasi-static indentation of resin-infused reinforced polymers
The effects of voids in quasi-static indentation of resin-infused reinforced polymers Open
The focus of this study is the influence of voids on the damage behaviour in quasi-static loading of resin-infused carbon fibre-reinforced polymers. Experimental results are presented for quasi-static loading in combination with high-resol…
View article: Multi-instrument multi-scale experimental damage mechanics for fibre reinforced composites
Multi-instrument multi-scale experimental damage mechanics for fibre reinforced composites Open
Reliable investigation of damage in fibre reinforced composites requires concurrent in- and ex-situ application of multiple instruments at different scale: digital image correlation, acoustic emission registration, optical/electron microsc…
View article: Mapping fibre failure in situ in carbon fibre reinforced polymers by fast synchrotron X-ray computed tomography
Mapping fibre failure in situ in carbon fibre reinforced polymers by fast synchrotron X-ray computed tomography Open
Fast, in situ synchrotron X-ray computed tomography (CT) has been used to capture damage evolution, particularly fibre failures, before final fracture (within 99.9% of the ultimate tensile stress) in cross-ply carbon fibre/epoxy coupons un…
View article: A BENCHMARKING EXERCISE FOR THREE LONGITUDINAL STRENGTH MODELS FOR UNIDIRECTIONAL FIBRE-REINFORCED COMPOSITES
A BENCHMARKING EXERCISE FOR THREE LONGITUDINAL STRENGTH MODELS FOR UNIDIRECTIONAL FIBRE-REINFORCED COMPOSITES Open
Three longitudinal strength models for unidirectional composites were benchmarked against each other and experiments, leading to vital insights for future developments of such models
View article: The micro-mechanics of strength, durability and damage tolerance in composites: new insights from high resolution computed tomography
The micro-mechanics of strength, durability and damage tolerance in composites: new insights from high resolution computed tomography Open
Recent work, led by the authors, on impact damage resistance, particle toughening and tensile fibre failure is reviewed in order to illustrate the use of high-resolution X-ray tomography to observe and quantify damage mechanisms in carbon …
View article: Interlaminar toughening mechanisms: In situ growth and modelling
Interlaminar toughening mechanisms: In situ growth and modelling Open
Modelling composite toughness and what mechanisms are responsible for added toughness has been less tackled within the composites community. With the advances of computational resources and the development of arbitrary cracking models, suc…
View article: Understanding the sequence of damage in complex hybrid composite metallic structures subject to out-of-plane loading investigated using computed tomography
Understanding the sequence of damage in complex hybrid composite metallic structures subject to out-of-plane loading investigated using computed tomography Open
The progression of damage in a hybrid composite-metallic structure subject to out-of-plane loading has been examined throughout an interrupted quasi-static-indentation test using micro-focus computed tomography for damage assessment. Two k…