{"?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-FDK342VG/43a7f94a-c3e1-443a-8c65-42bbc32c5ee5/HTML","dcterms:extent":"26 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-FDK342VG/3c8f7150-032f-4eeb-ba5f-c8b0fe5726a3/PDF","dcterms:extent":"553 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-FDK342VG/a01706b2-1595-48fd-b9ca-7924b865c265/TEXT","dcterms:extent":"24 KB"}],"edm:TimeSpan":{"@rdf:about":"2000-2024","edm:begin":{"@xml:lang":"en","#text":"2000"},"edm:end":{"@xml:lang":"en","#text":"2024"}},"edm:ProvidedCHO":{"@rdf:about":"URN:NBN:SI:DOC-FDK342VG","dcterms:isPartOf":[{"@rdf:resource":"https://www.dlib.si/details/urn:nbn:si:spr-ihg6vo21"},{"@xml:lang":"sl","#text":"Materiali in tehnologije"}],"dcterms:issued":"2006","dc:creator":["Li, Yingzhi","Šturm, Roman"],"dc:format":[{"@xml:lang":"sl","#text":"številka:2"},{"@xml:lang":"sl","#text":"letnik:40"},{"@xml:lang":"sl","#text":"6 strani"},{"@xml:lang":"sl","#text":"str. 49-54"}],"dc:identifier":["ISSN:1580-2949","COBISSID:423594","URN:URN:NBN:SI:doc-FDK342VG"],"dc:language":"en","dc:publisher":{"@xml:lang":"sl","#text":"Inštitut za kovinske materiale in tehnologije"},"dc:subject":[{"@xml:lang":"sl","#text":"Kachanovi parametri"},{"@xml:lang":"sl","#text":"lezenje"},{"@xml:lang":"sl","#text":"preiskava materiala"},{"@xml:lang":"sl","#text":"varjeni spoji"}],"dcterms:temporal":{"@rdf:resource":"2000-2024"},"dc:title":{"@xml:lang":"sl","#text":"Small-punch testing of a weld´s heat-affected zones| Testiranje lezenja toplotno vplivanih področij vara z uporabo majhnega bata|"},"dc:description":[{"@xml:lang":"sl","#text":"Small-punch creep tests were performed on four different zones of a P91 welded joint: the base metal (BM), the weld metal (WM), the heat-affected zone on the base-metal side (HAZ-BM) and the heat-affected zone on the weld-metal side (HAZ-WM). In addition to the creep-rupture times, full creep-deflection curves were also available, from which the creep properties of different HAZ zones could be derived. In this paper an analytic approach based on Chakrebarty´s membrane-stretch model and Kachanov´s creep law is used to interpret the creep-deflection curves of different zones. First of all, the strains and stresses are derived from the observed deflection curves according to Chakrebarty´s membrane-stretch model, then the Kachanov parameters are determined by attempting to minimize the sum of the squares of the residuals (the difference between the derived stains and the calculated strains at each time point). With the Kachanov parameters known, all the creep properties of the different zones of the welded joint can be obtained"},{"@xml:lang":"sl","#text":"Preskušanje lezenja z majhnim batom je bilo opravljeno na štirih različnih področjih P91 varjenega spoja, in sicer na osnovnem materialu (BM), na varu (WM), na toplotno vplivnem področju na strani osnovnega materiala (HAZ-BM) in na toplotno vplivnem področju na strani vara (HAZ-WM). Poleg samih časov lezenja do loma so na razpolago tudi celotne krivulje upogib preizkušanca-čas,na osnovi katerih je možno določiti lastnosti lezenja različnih toplotno vplivnih področij. V prispevku smo uporabili analitičen način interpretacije krivulj lezenja (odvisnost upogib preizkušanca-čas) preizkušancev, vzetih iz različnih območij varjenega spoja P91. Analitični način temelji na Chakrebartyjevem modelu raztezanja membrane in na Kachanovem zakonu lezenja. Najprej se iz časovno odvisnih krivulj upogibanja preizkušanca izračuna napetosti in deformacije po Chakrebartyjevem modelu raztezanja membrane. Potem se določijo Kachanovi parametri z minimiziranjem vsote kvadratov ostankov (to je razlika med dobljenimi raztezki in izračunanimi raztezki v vsaki časovni točki). Ko poznamo Kachanove parametr, lahko ocenimo vse lastnosti lezenja posameznega področja varjenega spoja"}],"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-FDK342VG","edm:aggregatedCHO":{"@rdf:resource":"URN:NBN:SI:DOC-FDK342VG"},"edm:isShownBy":{"@rdf:resource":"http://www.dlib.si/stream/URN:NBN:SI:DOC-FDK342VG/3c8f7150-032f-4eeb-ba5f-c8b0fe5726a3/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":"Inštitut za kovinske materiale in tehnologije"},"edm:object":{"@rdf:resource":"http://www.dlib.si/streamdb/URN:NBN:SI:DOC-FDK342VG/maxi/edm"},"edm:isShownAt":{"@rdf:resource":"http://www.dlib.si/details/URN:NBN:SI:DOC-FDK342VG"}}}}