Thin-Walled StructuresThin plate and shell structures are widely used in aerospace due to their lightweight nature and efficient load-bearing capabilities, making them attractive for aircraft and spacecraft designs. This study proposes an efficient quadrilateral inverse shell element for thin structures, developed using discrete Kirchhoff assumptions, for Structural Health ...
Ihtisham Khalid +3 more
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An Online Measurement and Calibration Method for a Radio Telescope Sub-Reflector Support Structure Using Fiber Bragg Grating [PDF]
Micromachines, 2023 The position and altitude of a sub-reflector have an important influence on the pointing accuracy of a radio telescope. With the increase of the antenna aperture, the stiffness of the support structure for the sub-reflector decreases.
Qian Xu, Hong Bao
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Shape Sensing in Plate Structures through Inverse Finite Element Method Enhanced by Multi-Objective Genetic Optimization of Sensor Placement and Strain Pre-Extrapolation [PDF]
SensorsThe real-time reconstruction of the displacement field of a structure from a network of in situ strain sensors is commonly referred to as “shape sensing”. The inverse finite element method (iFEM) stands out as a highly effective and promising approach to
Emiliano Del Priore, Luca Lampani
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Experimental Shape Sensing and Load Identification on a Stiffened Panel: A Comparative Study [PDF]
Sensors, 2022 The monitoring of loads and displacements during service life is proving to be crucial for developing a modern Structural Health Monitoring framework.
Marco Esposito +2 more
doaj +2 more sources
A Review of Robotic Surgery: Engineering Considerations and Future Directions From Surgeons' Perspectives [PDF]
Int J Med RobotABSTRACT Introduction Since its initial inception, robotic‐assisted minimally invasive surgery (RAMIS) is continually being applied to a wider array of procedures. However, there are significant limitations in current surgical subsystems, including a large learning curve, lack of effective haptic feedback, decreased surgical intuition, and decreased ...
Shaikh N +7 more
europepmc +2 more sources
A Critical Comparison of Shape Sensing Algorithms: The Calibration Matrix Method versus iFEM [PDF]
SensorsTwo shape-sensing algorithms, the calibration matrix (CM) method and the inverse Finite Element Method (iFEM), were compared on their ability to accurately reconstruct displacements, strains, and loads and on their computational efficiency.
Cornelis de Mooij, Marcias Martinez
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An Inverse FEM for Structural Health Monitoring of a Containership: Sensor Network Optimization for Accurate Displacement, Strain, and Internal Force Reconstruction [PDF]
SensorsIn naval engineering, particular attention has been given to containerships, as these structures are constantly exposed to potential damage during service hours and since they are essential for large-scale transportation.
Jacopo Bardiani +3 more
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Regional Stiffness and Hardening Indices: New Indicators Derived from Multidimensional Dynamic CTA for Aneurysm Risk Assessment. [PDF]
Adv Sci (Weinh)Two new indicators are derived from nonlinear stress–strain behavior obtained through in vivo biomechanical analysis of patient‐specific multidimensional dynamic computed tomography angiography. The regional stiffness index indicates the average stiffness while the hardening index reflects the pace of strain hardening.
Huang T +10 more
europepmc +2 more sources
Sensors, 2017 This paper investigated the effect of sensor density and alignment for three-dimensional shape sensing of an airplane-wing-shaped thick panel subjected to three different loading conditions, i.e., bending, torsion, and membrane loads.
Adnan Kefal, Mehmet Yildiz
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Shape Sensing of Plate Structures Using the Inverse Finite Element Method: Investigation of Efficient Strain–Sensor Patterns [PDF]
Sensors, 2020 Methods for real-time reconstruction of structural displacements using measured strain data is an area of active research due to its potential application for Structural Health Monitoring (SHM) and morphing structure control.
Rinto Roy +3 more
doaj +2 more sources