{"?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-DBMOWDLM/cf6bfc80-3a64-4acd-99a7-c6d2a32db9e6/HTML","dcterms:extent":"23 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-DBMOWDLM/bc5915f7-a503-4154-80de-a1b1f4cf7743/PDF","dcterms:extent":"248 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-DBMOWDLM/20d160cc-2f8f-4ec9-a9ee-78fb85460cd8/TEXT","dcterms:extent":"21 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-DBMOWDLM","dcterms:isPartOf":[{"@rdf:resource":"https://www.dlib.si/details/urn:nbn:si:spr-ihg6vo21"},{"@xml:lang":"sl","#text":"Materiali in tehnologije"}],"dcterms:issued":"2004","dc:creator":["Gilgert, Joseph","Leskovšek, Vojteh","Montannari, F.","Pluvinage, Guy","Šuštaršič, Borivoj","Vojvodič-Tuma, Jelena"],"dc:format":[{"@xml:lang":"sl","#text":"številka:3/4"},{"@xml:lang":"sl","#text":"letnik:38"},{"@xml:lang":"sl","#text":"6 strani"},{"@xml:lang":"sl","#text":"str. 137-142"}],"dc:identifier":["ISSN:1580-2949","COBISSID:359338","URN:URN:NBN:SI:doc-DBMOWDLM"],"dc:language":"en","dc:publisher":{"@xml:lang":"sl","#text":"Inštitut za kovinske materiale in tehnologije"},"dc:subject":[{"@xml:lang":"sl","#text":"hitrorezno jeklo"},{"@xml:lang":"sl","#text":"lomna žilavost"},{"@xml:lang":"sl","#text":"mehanske lastnosti"}],"dcterms:temporal":{"@rdf:resource":"2000-2024"},"dc:title":{"@xml:lang":"sl","#text":"Fracture-mechanics characteristics of M-2-type high-speed steel|"},"dc:description":[{"@xml:lang":"sl","#text":"This study presents some of the investigations made in the frame of the project called Determination of notch fracture toughness of tool steels, which is part of the Slovenia-France bilateral scientific cooperation named Proteus. The paper presents a determination of the notch fracture toughness with a non-standardised method. This is the so-called determination of the notch stress-intensity factor Ksub(p,c) on specimens without a fatigue crack but with different notch radii. For the investigations and experiments, hard and brittle, M-2-type high-speed steel was selected. During loading it behaves in acompletely linear-elastic way to the point of fracture. In the introduction, the volumetric approach is presented, where it is assumed that material fracture starts and continues if an appropriately large physical volume is available and that this volume is loaded with a certain average equilibrium stress. The basis for the determination of the effective volume, the distance and the stress is a numerical calculation based on the finite-element method (FEM). The results of the FEM calculations are presented and discused. The experimental procedures and the results of the method are also presented. The experimental results are supported by microstructural and fractographic examinations"},{"@xml:lang":"sl","#text":"V prispevku predstavljamo del raziskav, ki je bil opravljen v okviru projekta z naslovom: Določevanje lomne žilavosti orodnih jekel na preizkušancih z zarezo, pod okriljem Slo-F bilateralnega znanstvenega sodelovanja Proteus. Prikazan je nestandardni način določevanja faktorja intenzitete napetosti v zarezi Kspodaj(p,c) brez utrujenostne razpoke toda z različnimi korenskimi polmeri. Za preiskave smo izbrali trdo in krhko hitrorezno jeklo vrste M-2, ki se vede linearno-elastično praktično do loma. Predstavljen je volumetrični lomno-mehanski način, kjer je privzeto, da se proces loma prične in nadaljuje, če je za to na razpolago neki ustrezno velik fizikalni volumen, na katerega deluje neka povprečna uravnotežena napetost. Določevanje efektivne prostornine, razdalje in napetosti temelji na numeričnih izračunih z metodo končnih elementov. Predstavljamo potek in rezultate računalniške simulacije naosnovi metode končnih elementov za določitev efektivne napetosti in efektivne razdalje v korenu zareze, ki so osnova za določitev kritičnega faktorja intenzitete napetosti v zarezi. V nadaljevanju podajamo potek preizkusov in eksperimentalne rezultate določevanja lomne žilavosti v zarezi, ki so podprti z mikrostrukturnimi in fraktografskimi preiskavami"}],"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-DBMOWDLM","edm:aggregatedCHO":{"@rdf:resource":"URN:NBN:SI:DOC-DBMOWDLM"},"edm:isShownBy":{"@rdf:resource":"http://www.dlib.si/stream/URN:NBN:SI:DOC-DBMOWDLM/bc5915f7-a503-4154-80de-a1b1f4cf7743/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-DBMOWDLM/maxi/edm"},"edm:isShownAt":{"@rdf:resource":"http://www.dlib.si/details/URN:NBN:SI:DOC-DBMOWDLM"}}}}