Application of a LTCC sensor for measuring moisture content of building materials

Maksimović, Mirjana; Stojanović, Goran M.; Radovanović, Milan; Malešev, Mirjana; Радоњанин, Властимир; Radosavljevic, Goran; Smetana, Walter

doi:10.1016/j.conbuildmat.2011.06.029

Cited by 24 publications

(15 citation statements)

References 19 publications

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“…Working principle of the presented sensors is based on the capacitance change of sensor's capacitive part when it is exposed to different moisture concentration (similar principle was already reported in our earlier papers [24,25]). Namely, dielectric constant of water is greater than for the air, thus capacitance increases with increasing the water content in tested building materials.…”

Section: Working Principlesmentioning

confidence: 63%

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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Section: Working Principlesmentioning

confidence: 63%

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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“…Through this window the sensor is exposed to moisture, which will then cause change of its dielectric constant and total capacitance and consequently the resonant frequency of the LC sensor. The sensor exhibits from 0% to 70% wide detection range of water absorption with high linearity and fast response [1].…”

Section: B Electrical Measurementsmentioning

confidence: 99%

The feasibility of using electromagnetic waves in determining the moisture content of building fabrics and the cause of the water ingress.

Kot

Shaw

Jones

et al. 2014

International Journal on Smart Sensing and Intelligent Systems

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In this paper, the feasibility of using electromagnetic (EM) waves is determining the moisture content of building fabrics and the case of water ingress in experimentally assessed. This paper will concentrate on investigating the propagation of EM waves through typical structures and their interaction with concealed pipework, wiring and timber. All current methods are overviewed and analysed. Novel microwave sensor described in this paper operates in 6 GHz to 12 GHz frequency range using Marconi 6200A microwave test set. Results of experimental test co n firm th a t m ic ro w a v es ca n b e u sed a s a n a lt ern a tiv e n o ndestructive method for identifying different object behind the walls.

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“…Перспективным направлением в плане повышения производительности подобных исследований является разработка импульсных методов неразрушающего контроля (НК), характеризующихся малой длительностью процессов измерений и широко использующихся для определения теплофизических характеристик [7,8]. Задача достижения сопоставимой производительности при разработке аналогичных методов НК для измерения характеристик массопереноса осложнена необходимостью проведения длительной предварительной операции градуировки применяемых датчиков концентрации диффузанта по каждой системе композит−диффундирующее вещество [4][5][6]9,10]. А измерение локальной концентрации диффундирующих веществ, лежащее в основе реализации методов НК, представляет собой достаточно сложную задачу по сравнению с измерением локальных значений температуры [5,6,11].…”

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Оперативный Контроль Коэффициента Диффузии В Тонких Анизотропных Пористых Материалах

Беляев¹,

Мищенко²,

Беляев³

2019

Письма В Журнал Технической Физики

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Application of a LTCC sensor for measuring moisture content of building materials

Cited by 24 publications

References 19 publications

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

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

The feasibility of using electromagnetic waves in determining the moisture content of building fabrics and the cause of the water ingress.

Оперативный Контроль Коэффициента Диффузии В Тонких Анизотропных Пористых Материалах

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