Morphological evolution and internal strain mapping of pomelo peel using X-ray computed tomography and digital volume correlation

Wang, B.; Pan, Bing; Lubineau, Gilles

doi:10.1016/j.matdes.2017.10.038

Cited by 36 publications

(26 citation statements)

References 36 publications

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“…When combined with studies of tissue biomechanics using DVC for both bone and soft tissues [ 18 , 29 ], the potential to design and test scaffolds with locally tailored mechanical properties exists. DVC studies have previously been conducted on soft materials [ 30 , 31 , 32 ] and scaffolds [ 22 , 23 ], though none have used scaffold biomaterials intended for tissue regeneration. For the first time in this study, we utilised micro-CT and DVC to test low-stiffness hybrid biomaterial scaffolds for regenerative medicine.…”

Section: Discussionmentioning

confidence: 99%

Quantifying 3D Strain in Scaffold Implants for Regenerative Medicine

et al. 2020

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Regenerative medicine solutions require thoughtful design to elicit the intended biological response. This includes the biomechanical stimulus to generate an appropriate strain in the scaffold and surrounding tissue to drive cell lineage to the desired tissue. To provide appropriate strain on a local level, new generations of scaffolds often involve anisotropic spatially graded mechanical properties that cannot be characterised with traditional materials testing equipment. Volumetric examination is possible with three-dimensional (3D) imaging, in situ loading and digital volume correlation (DVC). Micro-CT and DVC were utilised in this study on two sizes of 3D-printed inorganic/organic hybrid scaffolds (n = 2 and n = 4) with a repeating homogenous structure intended for cartilage regeneration. Deformation was observed with a spatial resolution of under 200 µm whilst maintaining displacement random errors of 0.97 µm, strain systematic errors of 0.17% and strain random errors of 0.031%. Digital image correlation (DIC) provided an analysis of the external surfaces whilst DVC enabled localised strain concentrations to be examined throughout the full 3D volume. Strain values derived using DVC correlated well against manually calculated ground-truth measurements (R2 = 0.98, n = 8). The technique ensures the full 3D micro-mechanical environment experienced by cells is intimately considered, enabling future studies to further examine scaffold designs for regenerative medicine.

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Section: Discussionmentioning

confidence: 99%

Quantifying 3D Strain in Scaffold Implants for Regenerative Medicine

et al. 2020

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“…The 3D digital volume from a real structure can be meshed and simulated by the Finite Elements tool kit to see the local strain distribution with the corresponding structure variation in the applied field. Another technique is the so-called digital volume correlation (DVC), which can be performed to measure the local displacement inside the bulk and reveal the strain field in a 3D global manner [ 35 , 140 , 141 , 142 , 143 ]. The combination of these novel techniques will play a critical role in investigating materials with heterogeneous structures such as various composites, architecture materials made by additive manufacturing, biomaterials with hierarchical structures, etc.…”

Section: Conclusion and Perspectivementioning

confidence: 99%

Correlation of Materials Property and Performance with Internal Structures Evolvement Revealed by Laboratory X-ray Tomography

Zhang

Wang

2018

Materials

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Although X-rays generated from a laboratory-based tube cannot be compared with synchrotron radiation in brilliance and monochromaticity, they are still viable and accessible in-house for ex situ or interrupted in situ X-ray tomography. This review mainly demonstrates recent works using laboratory X-ray tomography coupled with the measurements of properties or performance testing under various conditions, such as thermal, stress, or electric fields. Evolvements of correlated internal structures for some typical materials were uncovered. The damage features in a graded metallic 3D mesh and a metallic glass under mechanical loading were revealed and investigated. Micro-voids with thermal treatment and void healing phenomenon with electropulsing were clearly demonstrated and quantitatively analyzed. The substance transfer around an electrode of a Li-S battery and the protective performance of a Fe-based metallic glass coating on stainless steel were monitored through electrochemical processes. It was shown that in situ studies of the laboratory X-ray tomography were suitable for the investigation of structure change under controlled conditions and environments. An extension of the research for in situ laboratory X-ray tomography can be expected with supplementary novel techniques for internal strain, global 3D grain orientation, and a fast tomography strategy.

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“…The 3D digital volume from a real structure can be meshed and simulated by the Finite Elements tool kit to see the local strain distribution with the corresponding structure variation in the applied field. Another technique is the so-called digital volume correlation (DVC), which can be performed to measure the local displacement inside the bulk and reveal the strain field in a 3D global manner [35,[140][141][142][143]. The combination of these novel techniques will play a critical role in investigating materials with heterogeneous structures such as various composites, architecture materials made by additive manufacturing, biomaterials with hierarchical structures, etc.…”

Section: Conclusion and Perspectivementioning

confidence: 99%

In-Situ X-Ray Tomographic Study of Materials

Maire¹,

Adrien²,

Withers³

2020

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X-ray computed tomography (CT) is advancing apace both in terms of the spatial resolution that can be achieved and the rate at which the radiographs necessary to reconstruct a 3D image can be collected. These advances combined with the fact that CT is inherently non-destructive mean that X-ray CT is moving simply from the collection of 3D images to the acquisition of 3D movies. Whether it is to collect information of rapidly changing behaviors, such as fracture, where live streaming of many 1000's of radiographs per second are needed to follow the events in situ, exploiting the intensity of a synchrotron X-ray source, or the longer timescales associated with long term oxidation, where time-lapse ex situ observations made by laboratory CT sources, X-ray CT provides unique insights into the behavior of natural and man-made materials that simply cannot be obtained by any other means.This book is a collection of chapters. It celebrates the possibilities for gaining inside information through time resolved X-ray CT looking both at the technical developments and opportunities for improving the quality and quantification of the image data we collect to the range of questions that X-ray CT can shine light upon. It is clear from this collection that many different environments and external constraints can be applied to the materials in situ whether to form the material or to observe its degradation or healing. We are sure that these chapters only represent the tip of the iceberg and that time-resolved X-ray CT, whether exploiting the intensity of a synchrotron or the accessibility or laboratory CT systems, will continue to develop into an indispensable characterization tool, alongside optical and electron microscopy. Further, we believe that the imaging modes, whether to detect subtle changes in phase, crystallographic structure or to fingerprint the elements contained in phases, will expand to provide an even richer picture of the internal structure of materials and their evolution over time than we can achieve today. We hope that this book shows the future or time resolved imaging is indeed very bright.

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Morphological evolution and internal strain mapping of pomelo peel using X-ray computed tomography and digital volume correlation

Cited by 36 publications

References 36 publications

Quantifying 3D Strain in Scaffold Implants for Regenerative Medicine

Quantifying 3D Strain in Scaffold Implants for Regenerative Medicine

Correlation of Materials Property and Performance with Internal Structures Evolvement Revealed by Laboratory X-ray Tomography

In-Situ X-Ray Tomographic Study of Materials

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