Results 11 to 20 of about 9,658 (218)

Bridge Health Monitoring Using Strain Data and High-Fidelity Finite Element Analysis

open access: yesSensors, 2022
This article presented a physics-based structural health monitoring (SHM) approach applied to a pretensioned adjacent concrete box beams bridge in order to predict the deformations associated with the presence of transient loads.
Behzad Ghahremani   +2 more
doaj   +1 more source

A Bulk Acoustic Wave Strain Sensor for Near-Field Passive Wireless Sensing

open access: yesSensors, 2023
Near-field passive wireless sensors can realize non-contact strain measurement, so these sensors have extensive applications in structural health monitoring. However, these sensors suffer from low stability and short wireless sensing distance. This paper
Xiyue Zou, Li Wen, Bin Hu
doaj   +1 more source

A Novel Infrared Thermography Sensing Approach for Rapid, Quantitative Assessment of Damage in Aircraft Composites

open access: yesSensors, 2020
The current necessity of the scientific and industrial community, for reduction of aircraft maintenance cost and duration, prioritizes the need for development of innovative nondestructive techniques enabling fast and reliable defect detection on ...
Spyridoula Farmaki   +4 more
doaj   +1 more source

Deep subwavelength ultrasonic imaging using optimized holey structured metamaterials

open access: yesScientific Reports, 2017
This paper reports the experimental demonstration of deep subwavelength ultrasonic imaging of defects in metallic samples with a feature size of λ/25 using holey-structured metamaterial lenses.
Kiran Kumar Amireddy   +2 more
doaj   +1 more source

Moving Pearl Vortices in Thin-Film Superconductors

open access: yesCondensed Matter, 2021
The magnetic field hz of a moving Pearl vortex in a superconducting thin-film in (x,y) plane is studied with the help of the time-dependent London equation.
Vladimir Kogan, Norio Nakagawa
doaj   +1 more source

Design and fabrication of a non-destructive system to detect rail corrugation [PDF]

open access: yesInternational Journal of Railway Research, 2022
The present paper proposes a technique that is capable of inspecting the rail head for corrugation before and after the grinding process with high accuracy and repeatability.
Iman Ahadi Akhlaghi   +3 more
doaj  

Challenges in Bridge Health Monitoring: A Review

open access: yesSensors, 2021
Bridge health monitoring is increasingly relevant for the maintenance of existing structures or new structures with innovative concepts that require validation of design predictions.
Piervincenzo Rizzo, Alireza Enshaeian
doaj   +1 more source

Millimeter-Wave Reflectometry for Distinction Among Critical Metal Powder Properties Used in Additive Manufacturing (AM)

open access: yesIEEE Open Journal of Instrumentation and Measurement
additive manufacturing (AM) or 3-D printing is the process of rapidly manufacturing complex parts that are used in a wide range of applications encompassing nearly unlimited types of critical and noncritical components.
Reza Zoughi   +2 more
doaj   +1 more source

Numerical study of beam shape adaptation by anisotropic disk covering transducer or metamaterial

open access: yesActa Acustica, 2023
Metamaterials are intensely explored for their capabilities to modify sound beams. In addition to frequency filtering, acoustic lenses offer intriguing possibilities for shaping sound beams.
Declercq Nico F.
doaj   +1 more source

Microwave Reflectometry for Online Monitoring of Metal Powder Used in Laser Powder Bed Fusion Additive Manufacturing

open access: yesIEEE Open Journal of Instrumentation and Measurement
This study presents the results of using a millimeter-wave reflectometer system, operating at 150 GHz, for demonstrating the basic efficacy of measuring electromagnetic scattering of metal powder used in laser powder bed fusion (LPBF) additive ...
Farzaneh Ahmadi, Reza Zoughi
doaj   +1 more source

Home - About - Disclaimer - Privacy