A thick film sensor for atmospheric corrosion testing

Fraigi, L.; Gwirc, Sergio N.; Lupi, D.

doi:10.1016/0925-4005(93)01084-h

Cited by 11 publications

(5 citation statements)

References 1 publication

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“…A similar interdigitated electrode arrangement was used to fabricate a thick-film sensor for assessing the 'time of wetness' (TOW) for surfaces exposed to various atmospheric conditions [88]. The sensor operated on the principle that capacity changes occur as a result of the presence of thin layers of water deposited on the sensing surface.…”

Section: Impedance-based Chemical Sensorsmentioning

confidence: 99%

Thick-film sensors: past, present and future

White

Turner

1997

Meas. Sci. Technol.

240

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A review of thick-film sensors is presented. The evolution of the technology to a successful enabling mechanism for solid-state sensors is described. Many examples of applications in the major signal domains (mechanical, radiant, thermal, magnetic and chemical) are cited. The important characteristics of the technology relating to hybrid circuits, support structures and primary sensing elements are illustrated. The future of thick-film sensors is discussed in the light of the rapid development of new materials for sensors that have emerged over recent years.

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Section: Impedance-based Chemical Sensorsmentioning

confidence: 99%

Thick-film sensors: past, present and future

White

Turner

1997

Meas. Sci. Technol.

240

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“…We have adjusted the relation so that the assumption of a known initial thickness is always met. The thickness of the reference part, which does not essentially change throughout the sensor's service life, acts as the initial thickness in relation (2). Should the sensor be used repeatedly, the user must remember the initial resistance of the sensing part that has not been affected by corrosion when using relation (1).…”

Section: Experimental Electrical Resistance Techniquementioning

confidence: 99%

“…Should the sensor be used repeatedly, the user must remember the initial resistance of the sensing part that has not been affected by corrosion when using relation (1). The new relation (2) eliminates this limitation…”

Section: Experimental Electrical Resistance Techniquementioning

confidence: 99%

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High sensitivity electrical resistance sensors for indoor corrosion monitoring

Kouřil

Prošek

Scheffel

et al. 2013

Corrosion Engineering, Science and Technology

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It is essential that corrosion monitoring of indoor atmospheres be highly sensitive, especially when corrosion rates corresponding to the lowest standard corrosivity categories are supposed to be identified within one or a few days. The electrical resistance (ER) technique in combination with high sensitivity ER sensors enabled detection of corrosion loss on an atomic scale. The magnetron sputtering method was used to produce sensors equipped with 50 to 800 nm metallic track. The set of developed sensors represent a wide range of materials, e.g. copper, silver, iron, lead and bronze. Laboratory experiments have proven that copper and silver sensors respond to changes in relative humidity and temperature within minutes. Bronze and copper sensors are able to detect changes in concentrations of volatile organic acids, which are common pollutants of indoor atmospheres in museums.

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“…Most of these sensors measure the change in electrical resistance or capacitance due to moisture either on the sensor surface (Davis and Hughes 1970;Gillespie and Kidd 1978;Fraigi et al 1994;Wei et al 1995;Sereda et al 1982;Weiss and Lukens 1981;Smith and Gilpatrick 1980) or on the material surface of interest (Schurer and Van Der Wal 1972;Giesler et al 1996;Weiss et al 1988;Burkhardt and Gerchau 1994;Häckel 1974Häckel , 1980. Apart from these electrical sensors there are also mechanical types (see e.g.…”

Section: Introductionmentioning

confidence: 99%

Methods for determination of duration of surface moisture and presence of water in gaps in wood joints

Fredriksson

Wadsö²,

Johansson³

2013

Wood Sci Technol

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Link to publicationCitation for published version (APA): Fredriksson, M., Wadsö, L., & Johansson, P. (2013). Methods for determination of duration of surface moisture and presence of water in gaps in wood joints. Wood Science and Technology, 47(5), 913-924. DOI: 10.1007/s00226-013-0549-4 General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal ABSTRACTIf water stays on wood surfaces or is trapped in gaps, the wood is supplied with water during a long period of time and high local moisture contents are reached. This can lead to decay by rot fungi and it is therefore important to avoid such water traps in order to limit the decay rate. This paper presents two methods; one for determination of duration of surface moisture on wood surfaces and one for determination of duration of water trapped in gaps in wood joints. Both these methods are based on similar electrical conductance measurements as are commonly used to measure moisture content of wood. Both sensor types consist of insulating tubing, electrically conductive adhesive and copper wire. The sensors monitor the presence of moisture on the actual material surface and because of their small size they do not influence the amount and duration of moisture that stays on the surface or in the gap.2

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A thick film sensor for atmospheric corrosion testing

Cited by 11 publications

References 1 publication

Thick-film sensors: past, present and future

Thick-film sensors: past, present and future

High sensitivity electrical resistance sensors for indoor corrosion monitoring

Methods for determination of duration of surface moisture and presence of water in gaps in wood joints

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