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Titel: Performance Assessment for a Guided Wave-Based SHM System Applied to a Stiffened Composite Structure
VerfasserIn: Mueller, Inka
Memmolo, Vittorio
Tschöke, Kilian
Moix-Bonet, Maria
Möllenhoff, Kathrin
Golub, Mikhail
Venkat, Ramanan Sridaran
Lugovtsova, Yevgeniya
Eremin, Artem
Moll, Jochen
Sprache: Englisch
Titel: Sensors
Bandnummer: 22
Heft: 19
Verlag/Plattform: MDPI
Erscheinungsjahr: 2022
Freie Schlagwörter: reliability assessment
guided ultrasounic waves
structural health monitoring (SHM)
probability of detection (POD)
path-based analysis
DDC-Sachgruppe: 500 Naturwissenschaften
Dokumenttyp: Journalartikel / Zeitschriftenartikel
Abstract: To assess the ability of structural health monitoring (SHM) systems, a variety of prerequisites and contributing factors have to be taken into account. Within this publication, this variety is analyzed for actively introduced guided wave-based SHM systems. For these systems, it is not possible to analyze their performance without taking into account their structure and their applied system parameters. Therefore, interdependencies of performance assessment are displayed in an SHM pyramid based on the structure and its monitoring requirements. Factors influencing the quality, capability and reliability of the monitoring system are given and put into relation with state-of-the-art performance analysis in a non-destructive evaluation. While some aspects are similar and can be treated in similar ways, others, such as location, environmental condition and structural dependency, demand novel solutions. Using an open-access data set from the Open Guided Waves platform, a detailed method description and analysis of path-based performance assessment is presented. The adopted approach clearly begs the question about the decision framework, as the threshold affects the reliability of the system. In addition, the findings show the effect of the propagation path according to the damage position. Indeed, the distance of damage directly affects the system performance. Otherwise, the propagation direction does not alter the potentiality of the detection approach despite the anisotropy of composites. Nonetheless, the finite waveguide makes it necessary to look at the whole paths, as singular phenomena associated with the reflections may appear. Numerical investigation helps to clarify the centrality of wave mechanics and the necessity to take sensor position into account as an influencing factor. Starting from the findings achieved, all the issues are discussed, and potential future steps are outlined.
DOI der Erstveröffentlichung: 10.3390/s22197529
Link zu diesem Datensatz: urn:nbn:de:bsz:291--ds-375844
hdl:20.500.11880/34037
http://dx.doi.org/10.22028/D291-37584
ISSN: 1424-8220
Datum des Eintrags: 17-Okt-2022
Fakultät: NT - Naturwissenschaftlich- Technische Fakultät
Fachrichtung: NT - Materialwissenschaft und Werkstofftechnik
Professur: NT - Keiner Professur zugeordnet
Sammlung:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

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