Results 1 to 10 of about 60,037 (278)

Full-Field Strain Reconstruction Using Uniaxial Strain Measurements: Application to Damage Detection [PDF]

Applied Sciences, 2021
This work investigates the inverse problem of reconstructing the continuous displacement field of a structure using a spatially distributed set of discrete uniaxial strain data. The proposed technique is based on the inverse Finite Element Method (iFEM),
Rinto Roy, Marco Gherlone, Cecilia Surace, Alexander Tessler   +3 more
doaj   +8 more sources

Study on Strain Field Reconstruction Method of Long-Span Hull Box Girder Based on iFEM

Journal of Marine Science and Engineering, 2023
The box girder’s condition significantly impacts the safety and overall performance of the entire ship because it is the primary stress component of the hull construction.
Guocai Chen, Xueliang Wang, Nan Zhao, Zhentao Jiang, Fei Li, Haozheng Chen, Pengyu Wei, Tao Zhang   +7 more
doaj   +5 more sources

Reconstruction of Multi-Load Strain Field of Ship Stiffened Plate Based on iFEM and Analysis of Influencing Factors of Reconstruction Accuracy

Journal of Marine Science and Engineering
This study utilizes the inverse finite element method (iFEM) to investigate the strain field reconstruction of ship stiffened plates under multiple loading conditions.
Guocai Chen, Xueliang Wang, Quanhua Zhu, Huawei Yang, Zhentao Jiang, Hao Xu, Mengdan Sun, Wei Chen, Haozheng Chen, Tao Zhang, Zheng Zhang   +10 more
doaj   +5 more sources

Enhanced Strain Field Reconstruction in Ship Stiffened Panels Using Optical Fiber Sensors and the Strain Function-Inverse Finite Element Method

Applied Sciences, 2023
Accurately reconstructing the strain field within stiffened ship panels is crucial for effective structural health monitoring. This study presents a groundbreaking approach to strain field reconstruction in such panels, utilizing optical fiber sensors in
Qingfeng Zhu, Guoqing Wu, Jie Zeng, Zhentao Jiang, Yingping Yue, Chao Xiang, Jun Zhan, Bohan Zhao   +7 more
doaj   +3 more sources

Physics- and position-aware GNNs for explosion-induced strain field reconstruction

Theoretical and Applied Mechanics Letters
High-fidelity strain measurements of plate and shell structures are crucial for elucidating failure mechanisms and deformation evolution. These data provide the basis for quantitative damage detection, design optimization, and structural health ...
Wei Xiao, Hao Liu, Lei Zhang
doaj   +2 more sources

Spacecraft Segment Damage Identification Method Based on Fiber Optic Strain Difference Field Reconstruction and Norm Calculation

Sensors, 2023
Real-time online identification of spacecraft segment damage is of great significance for realizing spacecraft structural health monitoring and life prediction.
Jihong Xu, Jie Zeng, Binbin Chen, Ruixin Lu, Yangyang Zhu, Lei Qi, Xiangfei Chen   +6 more
doaj   +3 more sources

A comparative study of techniques of distant reconstruction of displacement and strain fields using the DISTRESS simulator [PDF]

Optik, 2016
Abstract Reconstruction and monitoring of displacement and strain fields is an important problem in engineering. We analyze the remote and non-obtrusive method of Digital Image Correlation (DIC) in 2D based on photogrammetry. The method involves covering the photographed surface with a pattern of speckles and comparing the images taken before and ...
Ghulam Mubashar Hassan, Arcady V Dyskin
exaly   +2 more sources

Machine learning assisted masking of parasitic signals in Bragg coherent diffraction imaging [PDF]

Journal of Synchrotron Radiation
Bragg coherent diffraction imaging (BCDI) is a lens-less technique capable of imaging the strain in a particle in the size range from 20 nm up to several micrometres. This indirect measurement technique, used in X-ray synchrotrons or free-electron lasers
Ewen Bellec, Steven J. Leake, Mor Levi, Eugen Rabkin, Tobias U. Schülli, Marie-Ingrid Richard   +5 more
doaj   +2 more sources

Three-dimensional reconstruction of intragranular strain and orientation in polycrystals by near-field X-ray diffraction

Current Opinion in Solid State and Materials Science, 2020
Abstract A theoretical framework is proposed for simultaneous reconstruction of the three-dimensional grain shapes, intragranular strain and orientation fields inside polycrystals from near-field X-ray diffraction images, using box beam illumination.
P Reischig, Wolfgang Ludwig
exaly   +5 more sources

Improved deformation reconstruction of composite material structures based on optical fiber sensing [PDF]

Scientific Reports
Due to high strength and lightweight, composite material structures have been widely used in various industries such as aerospace, automotive, civil engineering, and healthcare.
Jun Huang, Yuwei Sun, Yu Peng, Dongsheng Zhang, Ruiya Li, Sheng Yin, Zhenfeng Peng, Quanyong Huang, Quan Liu   +8 more
doaj   +2 more sources