Imaging and Parameterizing Moisture in Road Sub Course Using Time Domain Reflectometry

Platt, Ian; Woodhead, Ian; Harrington, Phil; Tan, Ah-Hwee

doi:10.1109/jsen.2016.2552177

Cited by 4 publications

(3 citation statements)

References 19 publications

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“…Besides agriculture, TDR is also applied in civil engineering to measure water content and electrical conductivity in earth materials [21]. Studies in [22][23][24][25][26][27] have found that the TDR based permittivity measurements is possible to estimate the water content value in raw construction materials.…”

Section: Detection Of Multiple Degradations Within Polymeric Cablementioning

confidence: 99%

Detection of Multiple Degradations within Polymeric Cable with Multiple Joints

Kuan¹

2020

IJETER

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This paper presents the study on time domain reflectometry (TDR) technique in sectionalizing multiple cable degradations along a polymeric insulated cable with multiple joints. TDR has been widely used for fault localization in polymeric cables. Past studies have found that TDR is able to pinpoint degradation along a cable but they are limited to one degraded cable section only. Hence, this paper investigates the ability of TDR technique to pinpoint two degraded cable sections for an XLPE cable with two joints. This study models a TDR system using MATLAB Simulink with a 300-metre XLPE cable that is divided into three sections of 100 m each and then joint together using two cable joints. The location of the two degraded cable sections are varied to study the ability of TDR in detecting degraded cable at different locations. Experiments are conducted with the same cable configurations to validate the simulation results. Findings from both simulation and experimental results show that the TDR technique is also capable of pinpointing multiple degraded cable sections for a cable with multiple jointing.

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Section: Detection Of Multiple Degradations Within Polymeric Cablementioning

confidence: 99%

Detection of Multiple Degradations within Polymeric Cable with Multiple Joints

Kuan¹

2020

IJETER

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“…Electrical reflectometry, a technique that has been applied across a range of fields over the years, including materials [16,17], electrical wiring [18,19], power grids [20,21], and structural monitoring [22,23], is a common method for measuring electrical impedance. The technique exhibits variations depending on the measurement target, characteristics of the incident signal, and measurement equipment.…”

Section: Introductionmentioning

confidence: 99%

Impregnation damage monitoring for the canted-cosine-theta magnets using time-domain reflectometry

Seok Lee,

Marchevsky,

Teyber

et al. 2024

Supercond. Sci. Technol.

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Impregnation plays a crucial role in the performance and protection of superconducting magnets. To investigate the impregnation status during quench training, a vector network analyzer (VNA)-based time domain reflectometry (TDR) is introduced. The proposed method and analyses focus on demonstrating their applicability within canted-cosine-theta (CCT) magnets, covering both artificially induced quenches using spot heaters and naturally occurring quenches. To verify the performance of the proposed method, VNA-based TDR is applied to CCT Subscale magnets developed in the US Magnet Development Program. The findings contribute to a deeper understanding of CCT superconducting magnet behavior and inform strategies for improving their performance.

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“…TDR sensors were used for monitoring water uptake, based on the determination of electromagnetic pulse propagation speed in rods inserted into the studied material. Platt et al [13] presented application of a non-invasive TDR sensor to image and parameterize the moisture content of base course materials which can be used for road construction.…”

Section: Introductionmentioning

confidence: 99%

Characterization of LC sensor structures realized by PCB and LTCC technology for determining moisture in building materials

Radovanović

Kojić

Vasiljević

et al. 2018

PAC

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This paper compares performances of two wireless sensors for measuring water concentration in building materials, one manufactured by the printed circuit board (PCB) technology and another one using the low temperature co-fired ceramics (LTCC) process. The fabricated sensors consist of inductive part (L) and interdigitated capacitive part (C) in one metal layer, connected in parallel. Inductance of inductive part was kept constant, whereas capacitance of capacitive part was changed by exposing the sensor to different moisture concentration, changing its resonant frequency. The variation of resonant frequency as a function of different water concentration was measured, using antenna coil and impedance analyser, in two widely used construction materials: clay brick and autoclaved aerated concrete block. Surface analysis for two sensors was performed by means of 3D profilometer. Mechanical properties of the sensors were measured for both conductive segments (copper and silver) and substrates materials (PCB and ceramics substrates) using nanoindenter. Comparative characteristics of the sensors are presented from their application point of view.

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Imaging and Parameterizing Moisture in Road Sub Course Using Time Domain Reflectometry

Cited by 4 publications

References 19 publications

Detection of Multiple Degradations within Polymeric Cable with Multiple Joints

Detection of Multiple Degradations within Polymeric Cable with Multiple Joints

Impregnation damage monitoring for the canted-cosine-theta magnets using time-domain reflectometry

Characterization of LC sensor structures realized by PCB and LTCC technology for determining moisture in building materials

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