{"?xml":{"@version":"1.0"},"edm:RDF":{"@xmlns:dc":"http://purl.org/dc/elements/1.1/","@xmlns:edm":"http://www.europeana.eu/schemas/edm/","@xmlns:wgs84_pos":"http://www.w3.org/2003/01/geo/wgs84_pos","@xmlns:foaf":"http://xmlns.com/foaf/0.1/","@xmlns:rdaGr2":"http://rdvocab.info/ElementsGr2","@xmlns:oai":"http://www.openarchives.org/OAI/2.0/","@xmlns:owl":"http://www.w3.org/2002/07/owl#","@xmlns:rdf":"http://www.w3.org/1999/02/22-rdf-syntax-ns#","@xmlns:ore":"http://www.openarchives.org/ore/terms/","@xmlns:skos":"http://www.w3.org/2004/02/skos/core#","@xmlns:dcterms":"http://purl.org/dc/terms/","edm:WebResource":[{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:doc-X2641K36/32f34ec6-9f30-43a7-bae1-60f36a9c4301/PDF","dcterms:extent":"824 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:doc-X2641K36/b654f43e-a666-4910-af2f-d7031cc80144/TEXT","dcterms:extent":"34 KB"}],"edm:TimeSpan":{"@rdf:about":"1999-2025","edm:begin":{"@xml:lang":"en","#text":"1999"},"edm:end":{"@xml:lang":"en","#text":"2025"}},"edm:ProvidedCHO":{"@rdf:about":"URN:NBN:SI:doc-X2641K36","edm:isNextInSequence":{"@rdf:resource":"https://www.dlib.si/details/URN:NBN:SI:doc-VXUWEQOM"},"dcterms:isPartOf":[{"@rdf:resource":"https://www.dlib.si/details/URN:NBN:SI:spr-6QOUKQ9A"},{"@xml:lang":"sl","#text":"Strojniški vestnik"}],"dcterms:issued":"2015","dc:creator":["Furdui, Horia","Gillich, Gilbert-Rainer","Iancu, Vasile","Negru, Ionica","Praisach, Zeno Iosif"],"dc:format":[{"@xml:lang":"sl","#text":"številka:12"},{"@xml:lang":"sl","#text":"letnik:61"},{"@xml:lang":"sl","#text":"str. 721-730, SI 131"}],"dc:identifier":["ISSN:0039-2480","COBISSID:14406171","URN:URN:NBN:SI:doc-X2641K36"],"dc:language":"en","dc:publisher":{"@xml:lang":"sl","#text":"Zveza strojnih inženirjev in tehnikov Slovenije et al."},"dc:subject":[{"@xml:lang":"sl","#text":"izguba mase"},{"@xml:lang":"sl","#text":"konzolni nosilec"},{"@xml:lang":"sl","#text":"premik lastnih frekvenc"},{"@xml:lang":"sl","#text":"vrednotenje korozije"},{"@xml:lang":"sl","#text":"zmanjšanje togosti"}],"dcterms:temporal":{"@rdf:resource":"1999-2025"},"dc:title":{"@xml:lang":"sl","#text":"Natural frequency changes due to severe corrosion in metallic structures|"},"dc:description":[{"@xml:lang":"sl","#text":"Degradation of engineering structures due to corrosion affects their safety by reducing the cross-section of structural components and altering the material's mechanical characteristics. These parameter changes are observable in the shift of the natural frequencies. In the study presented in this paper, it was demonstrated that the kinetic energy distribution reflects the mass participation, thus being able to predict frequency changes due to mass loss, while the modal strain energy distribution can be properly used to indicate the location of the damage. As a result, two mathematical relations were developed by the authors, predicting the frequency changes due to the main effects of corrosion: loss of mass and loss of stiffness"},{"@xml:lang":"sl","#text":"Degradacija tehničnih konstrukcij zaradi korozije vpliva na njihovo varnost, saj zmanjšuje presek nosilnih komponent in spreminja mehanske lastnosti materiala. Te spremembe parametrov lahko spremljamo prek premika lastnih frekvenc. Namen članka je predstavitev matematičnih relacij, ki napovedujejo spremembe frekvenc zaradi splošne ali lokalne korozije na podlagi znane izgube mase in zmanjšanja upogibne togosti. Analitična raziskava se začne z vplivom mase rezin na različnih mestih nosilca. Rezultati so pokazali, da položaj rezine določa količino energije, ki prispeva k celotni energiji, shranjeni v nosilcu v danem vibracijskem načinu. Količina energije v različnih načinih se razlikuje in je odvisna od kvadrata oblike načina na mestu rezine. Na ta način je bilo pokazano, da porazdelitev kinetične energije odraža prispevek mase v celotni shranjeni energiji in tako omogoča napovedovanje spremembe frekvenc zaradi izgubljene mase"}],"edm:type":"TEXT","dc:type":[{"@xml:lang":"sl","#text":"znanstveno časopisje"},{"@xml:lang":"en","#text":"journals"},{"@rdf:resource":"http://www.wikidata.org/entity/Q361785"}]},"ore:Aggregation":{"@rdf:about":"http://www.dlib.si/?URN=URN:NBN:SI:doc-X2641K36","edm:aggregatedCHO":{"@rdf:resource":"URN:NBN:SI:doc-X2641K36"},"edm:isShownBy":{"@rdf:resource":"http://www.dlib.si/stream/URN:NBN:SI:doc-X2641K36/32f34ec6-9f30-43a7-bae1-60f36a9c4301/PDF"},"edm:rights":{"@rdf:resource":"http://rightsstatements.org/vocab/InC/1.0/"},"edm:provider":"Slovenian National E-content Aggregator","edm:intermediateProvider":{"@xml:lang":"en","#text":"National and University Library of Slovenia"},"edm:dataProvider":{"@xml:lang":"sl","#text":"Univerza v Ljubljani, Fakulteta za strojništvo"},"edm:object":{"@rdf:resource":"http://www.dlib.si/streamdb/URN:NBN:SI:doc-X2641K36/maxi/edm"},"edm:isShownAt":{"@rdf:resource":"http://www.dlib.si/details/URN:NBN:SI:doc-X2641K36"}}}}