Results 21 to 30 of about 336 (99)

Design and Experimental Analysis of Heat‐Pipe‐Integrated Heat Exchanger for Heat Pipe Nuclear Microreactor

open access: yesInternational Journal of Energy Research, Volume 2025, Issue 1, 2025.
With the advantages of high inherent safety, simple design, and small volume, the heat pipe reactor (HPR) is considered one of the nuclear power systems suitable for the distributed electricity generation market. The HPR transfers heat generated from the reactor core through heat pipes to an intermediate heat exchanger (IHX) connected to power ...
Yongnam Lee   +3 more
wiley   +1 more source

Leakage Diagnosis Technologies for Heating Pipe Networks: A Comprehensive Review of Currently Used Methods

open access: yesInternational Journal of Energy Research, Volume 2025, Issue 1, 2025.
The development of district heating systems (DHSs) has increased the demand for leakage diagnosis in heating networks due to its impact on thermal efficiency, heating effectiveness, and security. This paper introduces various leakage diagnosis methods, provides solutions to the challenges of current diagnosis methods, and makes suggestions for future ...
Shengtao Ye   +9 more
wiley   +1 more source

Breathing Phenomenon of Soil Desiccation Cracking: Insights From Novel Geophysical Observations

open access: yesJournal of Geophysical Research: Earth Surface, Volume 129, Issue 1, January 2024.
Abstract Drought‐induced soil desiccation cracking is a common natural phenomenon on the earth surface, which plays a significant role in influencing the hydro‐mechanical behavior of soils across various earthen engineering applications. However, there is still a scarcity of related studies investigating how field soil desiccation cracking responds to ...
Jin‐Jian Xu   +8 more
wiley   +1 more source

Enhanced Strain Measurement Sensitivity with Gold Nanoparticle‐Doped Distributed Optical Fibre Sensing

open access: yesStructural Control and Health Monitoring, Volume 2024, Issue 1, 2024.
Nanoparticle‐ (NP‐) doped optical fibres show the potential to increase the signal‐to‐noise ratio and thus the sensitivity of optical fibre strain detection for structural health monitoring. In this paper, our previous experimental/simulation study is extended to a design study for strain monitoring.
Xiang Wang   +5 more
wiley   +1 more source

Designing a Distributed Sensing Network for Structural Health Monitoring of Concrete Tunnels: A Case Study

open access: yesStructural Control and Health Monitoring, Volume 2024, Issue 1, 2024.
Structural health monitoring is essential for the lifecycle maintenance of tunnel infrastructure. Distributed fiber‐optic sensor (DFOS) technology, which is capable of distributed strain measurement and long‐range sensing, is an ideal nondestructive testing (NDT) approach for monitoring linear infrastructures.
Xuehui Zhang   +5 more
wiley   +1 more source

High-resolution liquid refractive index sensor based on side-polished d-shaped fiber and phase-sensitive optical frequency domain reflectometry (φ-OFDR)

open access: yesOptics Express
A compact high-resolution distributed liquid refractive index (RI) sensor based on the side-polished D-shaped fiber (DSF) that needs no post-fabrication modifications is presented. Since phase demodulation can offer better sensing resolution than most traditional amplitude cross-correlation algorithms, for what we believe to be the first time, we ...
Jeevan Bartaula   +2 more
openaire   +2 more sources

Distributed Corrosion Detection using Dedicated Optical Fiber Sensor (OFS) based Steel Rebar within Reinforced Concrete Structures by Optical Frequency-Domain Reflectometry (OFDR)

open access: yes, 2018
Corrosion is a major pathology for Civil Engineering structures, affecting long-term reliability. Huge direct costs (maintenance, rehabilitation) and indirect costs (lost productivity, litigation, outages, delays, downtimes) justify strategies to minimize the impact of corrosion.
Magne, Sylvain   +2 more
openaire   +1 more source

<title>Optical frequency-domain reflectometry (OFDR) using an integrated fiber tunable filter</title> [PDF]

open access: yesSPIE Proceedings, 1999
Yonghua Zhao   +3 more
openaire   +1 more source

A Review of Multiparameter Fiber-Optic Distributed Sensing Techniques for Simultaneous Measurement of Temperature, Strain, and Environmental Effects. [PDF]

open access: yesSensors (Basel)
Turov A   +9 more
europepmc   +1 more source

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