Implementation of signal processing methods in a structural health monitoring (SHM) system based on ultrasonic guided waves for defect detection in different materials and structures

Simple item page
dc.contributor.authorGalarza, Nekane
dc.contributor.authorRubio, Benjamín
dc.contributor.authorDiez, Alberto
dc.contributor.authorBoto, Fernando
dc.contributor.authorGil, Daniel
dc.contributor.authorRubio, Jokin
dc.contributor.authorMoreno, Eduardo
dc.contributor.institutionSMART_MON
dc.contributor.institutionTecnalia Research & Innovation
dc.contributor.institutionFACTORY
dc.contributor.institutionINDUSTRY_THINGS
dc.date.issued2016
dc.description.abstractThe local defect inspection in longitudinal structures such as plates or pipelines implies high economical costs and it is time consuming mainly in underground infrastructures, energy or water, and aerospace sectors. Moreover, if these structures are non-accessible, their local inspection is not possible. Ultrasonic (US) inspection technique based on guided waves is one of the potential alternatives to address this issue. The US inspection based on these type of waves could be applied in many scenarios to monitor the damage state of structures; i.e., in water underground pipelines to identify the wall thickness losses or impact damage detection on Carbon Fiber Reinforced Composites (CFRC). A SHM system based on guided waves requires a special signal processing in order to identify possible damage in the structure. The signal emitted and received is a combination of different propagation modes which are difficult to identify and analyse. However, if the signals are compared to each other (signal related to non-damaged components compared to damaged signal) it is possible to measure their difference as a distance that can be used to estimate the damage level. In this work, signals corresponding to non-damaged samples have been captured and then different types of damage have been applied for different cases. After the data acquisition phase, the comparison between signals has been carried out by applying different mathematical methods and distance metrics (SDC, DTW, Euclidean, Manhattan and Chebyshev), with the aim of detecting defects in different structures and materials. For this purpose, two cases have been analysed: 1) In CFRC plates subjected to impact damage and deformations and 2) In a pipe coated by cement-mortar in order to quantify the wall thickness losses. In both cases ultrasonic PZT sensors, an ultrasonic multichannel pulser/receiver and a software developed ad-hoc have been used. Although the SHM system components were similar, it must be noted that the type of ultrasonic guided waves used were different; in the case of CFRC plates, Lamb waves were excited whereas in the case of the pipeline, Love waves have been used. A comparison between the above mentioned methods is provided. The results show the validity of the approach for damage characterization.en
dc.description.statusPeer reviewed
dc.format.extent14
dc.format.extent1053643
dc.identifier.citationGalarza , N , Rubio , B , Diez , A , Boto , F , Gil , D , Rubio , J & Moreno , E 2016 , Implementation of signal processing methods in a structural health monitoring (SHM) system based on ultrasonic guided waves for defect detection in different materials and structures . in 8th European Workshop on Structural Health Monitoring, EWSHM 2016 . 8th European Workshop on Structural Health Monitoring, EWSHM 2016 , vol. 3 , NDT.net , pp. 1993-2006 , 8th European Workshop on Structural Health Monitoring, EWSHM 2016 , Bilbao , Spain , 5/07/16 .
dc.identifier.citationconference
dc.identifier.isbn9781510827936
dc.identifier.otherresearchoutputwizard: 11556/359
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=84995503428&partnerID=8YFLogxK
dc.language.isoeng
dc.publisherNDT.net
dc.relation.ispartof8th European Workshop on Structural Health Monitoring, EWSHM 2016
dc.relation.ispartofseries8th European Workshop on Structural Health Monitoring, EWSHM 2016
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subject.keywordsLamb waves
dc.subject.keywordsLove waves
dc.subject.keywordsPZT transducers
dc.subject.keywordsSignal processing methods
dc.subject.keywordsHealth Information Management
dc.subject.keywordsComputer Science Applications
dc.subject.keywordsFunding Info
dc.subject.keywordsAuthors would like to acknowledge the Basque Government funding within the ELKARTEK Programme (AIRHEM).
dc.subject.keywordsAuthors would like to acknowledge the Basque Government funding within the ELKARTEK Programme (AIRHEM).
dc.titleImplementation of signal processing methods in a structural health monitoring (SHM) system based on ultrasonic guided waves for defect detection in different materials and structuresen
dc.typeconference output
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
411_Galarza_Rev1.pdf
Size:
1 MB
Format:
Adobe Portable Document Format
Download