Statistical analysis of the lifetime of diamond impregnated tools for core drilling of concrete

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dc.contributor.authorMalevich, Nadja
dc.contributor.authorMüller, Christine H.
dc.contributor.authorKansteiner, Michael
dc.contributor.authorBiermann, Dirk
dc.contributor.authorFerreira, Manuel
dc.contributor.authorTillmann, Wolfgang
dc.date.accessioned2018-11-27T11:46:56Z
dc.date.available2018-11-27T11:46:56Z
dc.date.issued2018
dc.description.abstractThe lifetime of diamond impregnated tools for core drilling of concrete is studied via the lifetimes of the single diamonds on the tool. Thereby, the number of visible and active diamonds on the tool surface is determined by microscopical inspections of the tool at given points in time. This leads to interval-censored lifetime data if only the diamonds visible at the beginning are considered. If also the lifetimes of diamonds appearing during the drilling process are included then the lifetimes are doubly interval-censored. A statistical method is presented to analyse the interval-censored data as well as the doubly interval-censored data. The method is applied to three series of experiments which differ in the size of the diamonds and the type of concrete. It turns out that the lifetimes of small diamonds used for drilling into conventional concrete is much shorter than the lifetimes when using large diamonds or high strength concrete.en
dc.identifier.urihttp://hdl.handle.net/2003/37814
dc.identifier.urihttp://dx.doi.org/10.17877/DE290R-19809
dc.language.isoende
dc.relation.ispartofseriesDiscussion Paper / SFB823;30/2018en
dc.subject.ddc310
dc.subject.ddc330
dc.subject.ddc620
dc.subject.rswkStatistisches Verfahrende
dc.subject.rswkLebensdauerde
dc.subject.rswkDiamantwerkzeugde
dc.subject.rswkKernbohrende
dc.subject.rswkBetonde
dc.titleStatistical analysis of the lifetime of diamond impregnated tools for core drilling of concreteen
dc.typeTextde
dc.type.publicationtypeworkingPaperde
dcterms.accessRightsopen access
eldorado.secondarypublicationfalsede

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Sonderforschungsbereich (SFB) 823