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Multi-channel pressure sensor using speckle interferometry
Luleå tekniska universitet.
1995 (English)In: Optics and lasers in engineering, ISSN 0143-8166, E-ISSN 1873-0302, Vol. 23, no 5, p. 262-275Article in journal (Refereed) Published
Abstract [en]

The performance of two-dimensional pressure sensor arrays, consisting of 13 × 13 deformable steel diaphragms, is investigated. The pressureinduced out-of-plane component of the displacement field of all 169 sensors is measured in parallel using phase-stepping speckle interferometry. Subsequent least-squares fitting of the theoretical field provides a quantitative measure of the average pressure acting on each sensor. With monotonically-increasing load and suitable calibration, each pressure value can be measured to an accuracy of better than 1% of the full scale deflection. The current pressure range of 0-2.74 kPa can be extended by increasing the number of interferograms recorded.

Place, publisher, year, edition, pages
1995. Vol. 23, no 5, p. 262-275
National Category
Applied Mechanics
Research subject
Experimental Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-13687DOI: 10.1016/0143-8166(95)00033-KISI: A1995TC69700002Scopus ID: 2-s2.0-0029541255Local ID: cf4ee280-02b2-11dc-ad0a-000ea68e967bOAI: oai:DiVA.org:ltu-13687DiVA, id: diva2:986640
Note
Godkänd; 1995; 20070515 (cira)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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