Results 61 to 70 of about 3,633,666 (147)

Evaluation of Bending Deformations in Slender Cylindrical Structures Using Distributed Optical Fibre Strain Sensing

open access: yesSensors
Structures with slender cylindrical geometries, such as subsea power cables are critical components of infrastructure systems. These structures are prone to bending deformation under load, which can ultimately cause structural failure.
Madhubhashitha Herath   +3 more
doaj   +1 more source

Determination of the State of Strain of Large Floating Covers Using Unmanned Aerial Vehicle (UAV) Aided Photogrammetry

open access: yesSensors, 2017
Floating covers used in waste water treatment plants are one of the many structures formed with membrane materials. These structures are usually large and can spread over an area measuring 470 m × 170 m.
Wern Hann Ong   +3 more
doaj   +1 more source

Effect of Internal Reinforcing on Impact Axial Collapse Behavior of Hat-Shaped Tubular Structure

open access: yesMetals
A hollow steel structure with a hat cross-section was axially compressed under impact or quasistatic conditions. The hat height and hat width were 40 mm. The thickness was 0.6, 0.8, and 1.0 mm.
Gusmao Robbinson Noviano   +2 more
doaj   +1 more source

Synthetic Spectrum Approach for Brillouin Optical Time-Domain Reflectometry

open access: yesSensors, 2014
We propose a novel method to improve the spatial resolution of Brillouin optical time-domain reflectometry (BOTDR), referred to as synthetic BOTDR (S-BOTDR), and experimentally verify the resolution improvements.
Ken'ichi Nishiguchi   +3 more
doaj   +1 more source

Determination of Vibration Parameters of Deformable Structures Using Different Dynamic Loading Schemes and Types of Fiber-Optic Strain Sensors

open access: yesSensors
This paper presents several approaches for determining the vibration parameters of thin-walled deformable structures under different dynamic loading regimes using two types of fiber-optic strain sensors.
Valerii Matveenko   +3 more
doaj   +1 more source

A Circular Microstrip Antenna Sensor for Direction Sensitive Strain Evaluation

open access: yesSensors, 2018
In this paper, a circular microstrip antenna for stress evaluation is studied. This kind of microstrip sensor can be utilized in structural health monitoring systems. Reflection coefficient S11 is measured to determine deformation/strain value.
Przemyslaw Lopato, Michal Herbko
doaj   +1 more source

A novel compliance measurement in radial arteries using strain-gauge plethysmography [PDF]

open access: yes, 2010
[[abstract]]We propose a novel method for assessing the compliance of the radial artery by using a two-axis mechanism and a standard positioning procedure for detecting the optimal measuring site.
Liu, SH (Liu, Shing-Hong); Tyan, CC (Tyan, Chu-Chang); Chang, KM (Chang, Kang-Ming)
core  

Strain measurement using oscillator circuit sensor with high sampling frequency

open access: yesNihon Kikai Gakkai ronbunshu, 2019
A strain measurement system based on astable multivibrator using CMOS inverter has been developed. This system could omit an amplifier, filter and A/D converter unlike conventional Wheatstone bridge type sensor, because strain is measured by counting ...
Shumpo KITAMURA   +3 more
doaj   +1 more source

Design of auto-calibration system for multi-channel strain gauge

open access: yesGong-kuang zidonghua, 2016
In view of problem of wasting time and energy and low efficiency in calibrating process of existing calibration method of strain gauges which adopts single-channel manual operation mode, an auto-calibration system based on cortex-M3 MCU was designed ...
XU Lijiao, LIU Xiang, JI Xiaoju
doaj   +1 more source

Machine Learning‐Based Wind Classification by Wing Deformation in Biomimetic Flapping Robots: Biomimetic Flexible Structures Improve Wind Sensing

open access: yesAdvanced Intelligent Systems
Flying animals such as insects and birds have strain receptors on their wings. The functions and information processing capabilities of these strain receptors, however, are largely unknown.
Kenta Kubota, Hiroto Tanaka
doaj   +1 more source

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