Article
Engineering, Electrical & Electronic
Shengjia Wang, Yingjie Feng, Shuai Gao, Pengyuan Shi, Jianxuan Xiong, Pengfei Huang, Jiabin Wang, Zhan Gao, Sijin Wu, Weimin Sun
Summary: Proposal of a mechanical quantity sensing framework based on fiber-coupled common-path shearography for simultaneous measurement of deformation and slope. Optical fiber is used to generate holograms without breaking the common-path structure. Features include zero-approaching shear amount, separate control of spatial carriers, and scrambled reference wave. Single-shot phase measurement scheme is implemented by the spatial carrier method. Fiber scrambling is used to enhance the phase map quality. Physical principle demonstrated, and preliminary experiments verify the feasibility and functionality of the framework.
IEEE SENSORS JOURNAL
(2023)
Article
Optics
Yassine Tounsi, Manoj Kumar, Karmjit Kaur, Fernando-Mendoza Santoyo, Osamu Matoba, Abdelkrim Nassim
Summary: The present work proposes the use of the non-local sparse principal component analysis (NLS-PCA) method for speckle noise reduction in interferometric fringe patterns. The method performs well in removing noise and preserving finer details and fringe edges, surpassing traditional methods in terms of performance evaluation metrics such as PSNR, SSIM, EPI, and ENL.
OPTICS AND LASERS IN ENGINEERING
(2023)
Article
Optics
Shuhai Jia, Xing Zhou, Hongqiang Yu, Shunjian Xu, Xin Wang
Summary: The study introduces a method to enhance the contrast of speckle interference fringes in digital speckle pattern interferometry (DSPI), leading to an improvement in measurement quality and reduction in speckle noise. When combined with a phase-stepping algorithm, the quality of DSPI measurement is significantly enhanced. The results show improvement in deformation measurement with contrast enhancement compared to conventional filtering.
JOURNAL OF MODERN OPTICS
(2021)
Article
Optics
Yimin Ye, Xiaodong Li, Jiemin Feng, Dongsheng Zhang
Summary: A dual-lens system has been proposed to expand the view angle of shearography and improve efficiency and detection accuracy. The new optical arrangement is simple to construct, with uniform brightness distribution, suitable for detecting objects with different materials.
Article
Optics
Guoqing Gu, Yun Pan, Chengchun Qiu, Chengjie Zhu
Summary: A hybrid nondestructive testing approach based on shearography and digital speckle pattern interferometry is proposed for depth characterization of internal defect. By developing a novel dual-sensitive speckle interferometry system and combining bending theory and DSPI imaging results, the method successfully achieves qualitative representation and prediction of internal defect depth. Experimental results validate the feasibility and effectiveness of the proposed fusion method.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Physics, Multidisciplinary
Yonghong Wang, Xiao Zhang, Qihan Zhao, Yanfeng Yao, Peizheng Yan, Biao Wang
Summary: We propose a novel system that uses a single camera to synchronously measure out-of-plane deformation and two orthogonal slopes. The linearly polarized reference beam interferes with the unpolarized object beam to measure the out-of-plane deformation, while a modified Mach-Zehnder interferometer is used to measure the two orthogonal slopes. This method has been proven effective through experiments on pressure-loaded circular plates.
Article
Optics
Xiangyang Xu, Yinhang Ma, Xinxing Shao, Xiaoyuan He, Chenggen Quan
Summary: This paper proposes a method to merge stereo-DIC and ESPI data by camera calibration and verifies the accuracy of full-field displacement measured by stereo-DIC in a cantilever beam test. The proposed method can be used to verify the full-field measurement accuracy of DIC, determine the rigid-body displacement for ESPI, obtain the displacement vector, and achieve a large range of high-precision three-dimensional deformation measurements.
Article
Optics
Yonghong Wang, Yin Hu, Chen Li, Biao Wang
Summary: A filtering method based on optimized 2D S-transform is proposed in this paper to address the problem of noise in the phase pattern in digital speckle pattern interferometry. The method utilizes tilt factors and translation factors to maintain the appropriate size of the Gaussian window at different frequency positions, providing a high signal-to-noise ratio denoising method. The analysis results show that the proposed method achieves a minimum signal-to-noise ratio (SNR) of 14.5435 dB and a minimum peak signal-to-noise ratio (PSNR) of 19.4555 dB, demonstrating better precision compared to traditional methods and solving the incongruity between low-density and high-density fringes.
OPTICS COMMUNICATIONS
(2023)
Article
Engineering, Multidisciplinary
Cristofaro S. Timpano, Garrett W. Melenka
Summary: This study introduces a methodology for obtaining optimal DVC image datasets for composite materials by adding contrast particles to an epoxy resin. The 25 μm copper particles were found to provide the greatest accuracy. Comparison between downsampled ?-CT and full-resolution datasets demonstrated processing strategies for DVC analysis.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Optics
Liping Yan, Xinyong Tang, Liu Huang, Benyong Chen
Summary: In this paper, a novel adaptive mask generating algorithm based on fuzzy set theory is proposed to automatically calculate an optimal threshold for reliable phase unwrapping in digital speckle pattern interferometry. The algorithm uses a reliability map to determine the fuzzy interval of the threshold and establishes a membership function to map reliability values to the interval of [0, 1]. Experimental results show that the algorithm can adaptively calculate an optimal threshold and provide a reliable and accurate unwrapping phase for actual phase measurement.
OPTICS AND LASERS IN ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Jessica Auber-Le Saux, Vincent Detalle, Xueshi Bai, Michalis Andrianakis, Nicolas Wilkie-Chancellier, Vivi Tornari
Summary: This article introduces a new full-field technique, Digital Holographic Speckle Pattern Interferometry (DHSPI), to monitor surface changes of artworks in real-time. In order to improve the efficiency and accuracy of data processing, researchers have developed a simpler and faster processing method, successfully applied to unwrapped images and surface displacement.
APPLIED SCIENCES-BASEL
(2022)
Article
Optics
Xing Zhou, Shuhai Jia, Hongqiang Yu, Liming Gao
Summary: This paper presents a dual-function speckle interferometry system that can simultaneously measure out-of-plane displacement and slope, with better accuracy in out-of-plane displacement calculation compared to traditional methods. The system has been proven effective in detecting internal defects at the edges.
JOURNAL OF MODERN OPTICS
(2022)
Article
Engineering, Electrical & Electronic
Runkai Zhang, Qiyang Xiao, Ying Du, Xianyu Zuo
Summary: This paper proposes an image-filtering evaluation method based on the Sobel operator and image entropy to quantitatively evaluate the filtering process of DSPI, which has been verified by experiments.
IEEE PHOTONICS JOURNAL
(2021)
Article
Engineering, Mechanical
Behzad Farahani, Frederico Direito, Pedro J. Sousa, Paulo J. Tavares, Virginia Infante, Pedro P. M. G. Moreira
Summary: This study focuses on developing a complementary fatigue crack-tip evaluation approach using multiscale optical techniques. By comparing calculated parameters for different systems to shift to higher resolution techniques, the proposed methodologies are validated.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Optics
Boshuo Yang, Minyang Wu, Yinhang Ma, Hanyang Jiang, Fujun Yang
Summary: A new configuration of electronic speckle pattern interferometry (ESPI) is being developed for simultaneous three-dimensional deformation measurements. In this system, symmetrical illuminating arrangement with dual-wavelength lights is used to sense in-plane deformation components, while another device utilizing a different wavelength light measures out-of-plane deformation. Three-dimensional deformation information is obtained using temporal phase-shift method, and strain components related to surface deformation are determined through numerical differential. Experimental results verify the effectiveness and feasibility of the proposed ESPI system for measuring 3D deformation.
Article
Anthropology
Ricardo Miguel Godinho, Paul O'Higgins, Celia Goncalves
AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY
(2020)
Article
Anthropology
Antonio Profico, Luca Bondioli, Pasquale Raia, Paul O'Higgins, Damiano Marchi
Summary: This study introduces a new R package, morphomap, for extracting shape information, building cortical thickness maps, and calculating biomechanical parameters on long bones. It greatly facilitates rapid analysis of long bone form, proving to be a valuable addition to historical analysis software for osteology.
AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY
(2021)
Article
Anatomy & Morphology
Olivia A. M. Smith, Youssef S. G. Nashed, Christian Duncan, Nick Pears, Antonio Profico, Paul O'Higgins
Summary: The study developed a statistical model to compare craniofacial ontogeny between different age groups and sexes. Results showed that children aged 3-10 undergo greater changes than adolescents aged 11-20, and males extend growth allometrically into larger size ranges. While no significant differences were found in ontogenetic trajectories between sexes, there was a significant residual sexual dimorphism in the older age group.
ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY
(2021)
Article
Anatomy & Morphology
Olivia A. M. Smith, Christian Duncan, Nick Pears, Antonio Profico, Paul O'Higgins
Summary: This study developed statistical models of craniofacial aging to compare the aging process between males and females throughout adulthood. It found significant differences in the way males and females age, as well as in the characteristics, timing, and rates of aging between early and later phases of adulthood. Further research is needed to assess generalizability and provide better data for clinical assessment and treatment planning.
ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY
(2021)
Article
Biology
Hugo Dutel, Flora Groning, Alana C. Sharp, Peter J. Watson, Anthony Herrel, Callum F. Ross, Marc E. H. Jones, Susan E. Evans, Michael J. Fagan
Summary: Cranial morphology in lepidosaurs varies greatly with frequent loss or reduction of bony elements, but the mechanical principles underlying these variations remain poorly understood. Through computer-based simulation, it was found that despite differences in strain gradients, the overall strain magnitude and distribution across the cranium were similar in two large, active foragers, highlighting the importance of the postorbital bar in resistance to feeding loads. The reduction of the postorbital bar did not impair biting performance or structural resistance to feeding loads in Varanus niloticus.
JOURNAL OF EXPERIMENTAL BIOLOGY
(2021)
Article
Engineering, Biomedical
Laura Perez-Pachon, Parivrudh Sharma, Helena Brech, Jenny Gregory, Terry Lowe, Matthieu Poyade, Flora Groning
Summary: The study investigated the accuracy of holographic headsets in registering virtual models with real-world features based on the position and size of image markers. Results showed that certain image marker positions and smaller markers led to larger errors in perceived dimensions of virtual models, while larger markers resulted in smaller errors. Approximately 70.7% of cases had errors of <= 2 degrees, and approximately 76% had errors of <= 2 mm.
INTERNATIONAL JOURNAL OF COMPUTER ASSISTED RADIOLOGY AND SURGERY
(2021)
Article
Anatomy & Morphology
Federica Landi, James Barraclough, Andrej Evteev, Anatoliy Anikin, Leonid Satanin, Paul O'Higgins
Summary: This study found that the nasal and subnasal regions make significant contributions to facial development in children during early ontogeny, with the nasal septum and developing dentition playing crucial roles. Additionally, while soft tissues have local contributions to the development of certain skeletal elements, they have a less pronounced effect on facial height compared to skeletal components.
ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY
(2022)
Article
Multidisciplinary Sciences
Peter J. Watson, Alana C. Sharp, Tarun Choudhary, Michael J. Fagan, Hugo Dutel, Susan E. Evans, Flora Groning
Summary: The study used computational methods to analyze the biomechanics of rabbit cranium during mastication, showing that most of the cranium, including the unique fenestrated rostrum, transmits masticatory strains. Peak strains were found to be attributed to both incisor and molar biting, indicating a skull shape adapted for a combination of infrequent incisor bites and cyclic molar bites. However, certain regions experienced low peak strain, suggesting they are not designed to resist masticatory forces.
SCIENTIFIC REPORTS
(2021)
Article
Multidisciplinary Sciences
Antonio Profico, Carlotta Zeppilli, Ileana Micarelli, Alessandro Mondanaro, Pasquale Raia, Damiano Marchi, Giorgio Manzi, Paul O'Higgins
Summary: In biological anthropology, parameters related to cross-sectional geometry are calculated to evaluate the degree of lateralization in paired long bones. Both males and females exhibit right lateralization, with males showing higher lateralization than females. Occupation and loading history do not show significant association with lateralization. Body weight, height, and long-bone length are major factors in asymmetry in the humerus, with the degree of lateralization decreasing in older individuals.
Article
Biodiversity Conservation
Christopher Lyon, Erin E. Saupe, Christopher J. Smith, Daniel J. Hill, Andrew P. Beckerman, Lindsay C. Stringer, Robert Marchant, James McKay, Ariane Burke, Paul O'Higgins, Alexander M. Dunhill, Bethany J. Allen, Julien Riel-Salvatore, Tracy Aze
Summary: Anthropogenic activity is altering Earth's climate and ecosystems in ways that could be dangerous and disruptive to humans. The rise in greenhouse gas concentrations in the atmosphere is projected to have lasting effects beyond 2100. This calls for a need to focus on long-term planning and policy measures to address the impacts of climate change.
GLOBAL CHANGE BIOLOGY
(2022)
Article
Anatomy & Morphology
Alana C. Sharp, Hugo Dutel, Peter J. Watson, Flora Groning, Nick Crumpton, Michael J. Fagan, Susan E. Evans
Summary: Cranial sutures are fibrocellular joints between skull bones that are gradually replaced with bone, facilitating growth and cranial shape change. Our study used computational biomechanical methods to simulate biting in a rat skull and found that the presence of cranial sutures did not significantly alter overall strain gradients across the cranium, but did affect local variations in strain magnitudes and patterns near the sutures. This suggests that the importance of sutures differs in different regions and should be considered in models requiring accurate local strain magnitudes and patterns.
JOURNAL OF MORPHOLOGY
(2023)
Article
Agriculture, Dairy & Animal Science
Wuyang Shui, Antonio Profico, Paul O'Higgins
Summary: This study extends previous research on the effects of different approaches to locating semilandmarks on the estimates of average shape and shape variation. The findings suggest that these different approaches can yield different estimates of surface shapes. The study highlights the importance of considering the particular study context and aims when choosing semilandmarking approaches.
Article
Anatomy & Morphology
Costantino Buzi, Antonio Profico, Ce Liang, Roman H. Khonsari, Paul O'Higgins, Mehran Moazen, Katerina Harvati
Summary: The use of non-destructive approaches such as computerised tomography (CT) allows detailed study of internal structures of skeletal material. We introduce a new R-based software tool, Icex, for the study of skeletal cavities and fossae in 3D digital images. Icex enables rapid quantification of these structures.
JOURNAL OF ANATOMY
(2023)
Meeting Abstract
Anatomy & Morphology
Flora Groning, Laura Perez-Pachon, Sofia Aliotta, Caroline Collas, Anastassia Fertikova, Norman Koos, Ronja Struck, Neil Curtis, Rebecca Crozier
JOURNAL OF ANATOMY
(2021)
Article
Zoology
Marc E. H. Jones, Flora Groning, Richard M. Aspden, Hugo Dutel, Alana Sharp, Mehran Moazen, Michael J. Fagan, Susan E. Evans
VERTEBRATE ZOOLOGY
(2020)
Article
Biophysics
Nathan D. Camarillo, Rafael Jimenez-Silva, Frances T. Sheehan
Summary: This article discusses the statistical dependence between multiple measurements from the same participant and provides recommendations for using these measurements when they are not independent.
JOURNAL OF BIOMECHANICS
(2024)
Article
Biophysics
J. Huet, A. -S. Boureau, A. Sarcher, C. Cornu, A. Nordez
Summary: Standard compression in freehand 3D ultrasound induces a bias in volume calculations, but minimal compression and gel pad methods have similar results. With a trained examiner and precautions, the bias can be minimized and become acceptable in clinical applications.
JOURNAL OF BIOMECHANICS
(2024)
Article
Biophysics
C. Lariviere, A. H. Eskandari, H. Mecheri, F. Ghezelbash, D. Gagnon, A. Shirazi-Adl
Summary: Recent developments in musculoskeletal modeling have focused on model customization. Personalization of the spine profile may affect estimates of spinal loading and stability. This study investigates the biomechanical consequences of changes in the spinal profile and finds that personalizing the spine profile has medium to large effects on trunk muscle forces and negligible to small effects on spinal loading and stability.
JOURNAL OF BIOMECHANICS
(2024)
Article
Biophysics
Luke T. Mattar, Arash B. Mahboobin, Adam J. Popchak, William J. Anderst, Volker Musahl, James J. Irrgang, Richard E. Debski
Summary: Exercise therapy fails in about 25.0% of cases for individuals with rotator cuff tears, and one reason for this failure may be the inability to strengthen and balance the muscle forces that keep the humeral head in the correct position. This study developed computational musculoskeletal models to compare the net muscle force before and after exercise therapy between successfully and unsuccessfully treated patients. The study found that unsuccessfully treated patients had less inferiorly oriented net muscle forces, which may increase the risk of impingement.
JOURNAL OF BIOMECHANICS
(2024)
Article
Biophysics
Natsuki Sado, Takeshi Edagawa, Toshihide Fujimori, Shogo Hashimoto, Yoshikazu Okamoto, Takahito Nakajima
Summary: The existing methods for predicting hip and lumbosacral joint centres in Japanese adults are biased and differ between sexes. We propose new regression equations that consider soft-tissue thickness, sex differences, and a height-directional measure, and validate them using leave-one-out cross-validation.
JOURNAL OF BIOMECHANICS
(2024)
Article
Biophysics
Peimin Yu, Xuanzhen Cen, Qichang Mei, Alan Wang, Yaodong Gu, Justin Fernandez
Summary: This study aimed to explore the intra-foot biomechanical differences among individuals with chronic ankle instability (CAI), copers, and healthy individuals during dynamic tasks. The study found that copers and CAI individuals had smaller dorsiflexion angles and copers presented a more eversion position compared to healthy participants. Copers also had greater dorsiflexion angles in the metatarsophalangeal joint and more inversion moments in the subtalar joint during certain tasks. These findings can help in designing interventions to restore ankle joint functions in CAI individuals.
JOURNAL OF BIOMECHANICS
(2024)
Article
Biophysics
Jon Skovgaard Jensen, Anders Holsgaard-Larsen, Anders Stengaard Sorensen, Per Aagaard, Jens Bojsen-Moller
Summary: This study investigates the biomechanical effects of robot-assisted body weight unloading (BWU) on gait patterns in healthy young adults. The results show that dynamic robot-assisted BWU enables reduced kinetic requirements without distorting biomechanically normal gait patterns during overground walking.
JOURNAL OF BIOMECHANICS
(2024)