Results 51 to 60 of about 3,633,666 (147)

Effect of Strain Measurement Layout on Damage Detection and Localization in a Free Falling Compliant Cylinder Impacting a Water Surface

open access: yesFluids, 2021
The need for effective and reliable damage detection and localization systems is growing in several engineering fields, in particular in water impact problems characterized by impulsive loading conditions, high amplitude vibrations and large local ...
Alessandro Mercuri   +5 more
doaj   +1 more source

Field Testing of a Prestressed Concrete Bridge With High Performance and Locally Developed Ultra-High Performance Concrete Girders

open access: yesFrontiers in Built Environment, 2019
Recent research has developed mixture proportions for ultra-high performance concrete (UHPC) using materials primary local to New Mexico, United States of America (USA). In 2017, a two-span bridge was constructed in Anthony, New Mexico, USA consisting of
Turki S. Alahmari   +4 more
doaj   +1 more source

Calibration of a Speckle Interferometry Full-Field Strain Measurement System

open access: yes, 2008
This study describes the calibration of a full-field speckle interferometry strain measurement system using the calibration specimen and protocol defined in the Standardisation Project for Optical Techniques of Strain measurement (SPOTS) standard.
HACK E.   +7 more
core   +1 more source

An Investigation of the Temperature-Drift Effect on Strain Measurement of Concrete Beams

open access: yesApplied Sciences, 2019
This study investigates the temperature-drift effect on strain measurement of concrete beams and proposes a method for determination of the mechanical strain of stressed concrete beams. In the study, wireless electrical resistance strain gauges were used
Yiching Lin, Yu-Ting Liu, Yu-Wen Chang
doaj   +1 more source

Temperature and strain discrimination using a single tilted fibre Bragg grating [PDF]

open access: yes, 2007
A fibre optic sensor capable of discriminating between temperature and strain, using a single fibre Bragg grating, is presented. The technique exploits the core–cladding mode coupling of a tilted fibre Bragg grating (TFBG). The core and cladding modes
Tatam, Ralph P.   +2 more
core   +1 more source

Correlations Between XRD Peak Broadening and Elastic and Plastic Deformation for Mild Steel Sheets Under Tensile Loading

open access: yesMedžiagotyra
The polycrystalline nature of steel sheets plays a fundamental role in their plastic behavior during forming, especially under complex stresses, such as the deep drawing process.
Sarra KHELIFI   +5 more
doaj   +1 more source

Differential phase tracking applied to Bragg gratings in multicore fiber for high accuracy curvature measurement [PDF]

open access: yes, 2006
We report interferometric interrogation of fiber Bragg gratings in separate cores of a multicore fiber for high resolution quasi-static and dynamic bend measurements.
Kirkendall, Clay K.   +2 more
core   +1 more source

High-Speed FBG-Based Fiber Sensor Networks for Semidistributed Strain Measurements

open access: yesIEEE Photonics Journal, 2013
Conventional fiber-Bragg-grating (FBG)-based sensor networks based on either wavelength- or time-division-multiplexing (WDM or TDM) schemes may suffer from low interrogation speed with moving mechanical parts or inevitable crosstalk between nodes with ...
Lianshan Yan   +5 more
doaj   +1 more source

Review of Trackside Monitoring Solutions: From Strain Gages to Optical Fibre Sensors

open access: yesSensors, 2015
A review of recent research on structural monitoring in railway industry is proposed in this paper, with a special focus on stress-based solutions. After a brief analysis of the mechanical behaviour of ballasted railway tracks, an overview of the most ...
Georges Kouroussis   +5 more
doaj   +1 more source

Application of optical measurement techniques to high strain rate deformations in composite materials [PDF]

open access: yes, 2010
Traditionally high strain rate material characterisations have been conducted using strain gauges and/or cross head displacements in servo-hydraulic test machines, and force transducers in split Hopkinson bar experiments.
Longana, M.L.   +2 more
core   +1 more source

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