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| Description
| - V článku jsou analyzovány vlivy statistické distribuce velikostí mikrostrukturních defektů způsobujících rozptyl lomové houževnatosti křehkých materiálů. Výsledky mohou být využity pro odhad spolehlivosti strojírenských částí provozovaných za podmínek vzniku křehkého lomu. Spolehlivost hodnocení jako doplňková pravděpodobnost iniciace křehkého lomu je diskutována vzhledem k charakteru statistické distribuce velikostí defektů, materiálových mechanických vlastností a změně zatěžování a podmínek napětí komponenty. Aplikace této metody na Ni-Cr ocel ukazuje na velmi dobrý souhlas publikovaného a experimentálně stanoveného rozptylu lomové houževnatosti. Tento pravděpodobnostní přístup je srovnán s deterministickou metodou spolehlivosti pramenící z výpočtu koeficientů bezpečnosti. Racionální hodnocení faktoru bezpečnosti jako funkce přijatelné pravděpodobnosti vzniku lomové nestability poskytuje vysoce efektivní nástroj pro design inženýrských částí. (cs)
- The paper analyses the effects of statistical distribution of micro-structural defect sizes concerning a scatter of brittle material fracture toughness. The results can be utilized for reliability assessment of selected engineering components operating under conditions of imminent brittle fracture. The reliability, taken as a complementary probability of brittle fracture initiation, is discussed, taking into account the character of the defect size statistical distribution, material mechanical properties, and varying loading and stress conditions of the component. Application of this method on Ni?Cr steel has demonstrated that there is very good agreement of the fracture behaviour predicted scatter with experimental results. This probability approach is compared with a deterministic reliability method originating from computations of safety factors. Its rational evaluation, as a function of the acceptable probability of fracture instability, provides a highly effective tool for designing of engineerin
- The paper analyses the effects of statistical distribution of micro-structural defect sizes concerning a scatter of brittle material fracture toughness. The results can be utilized for reliability assessment of selected engineering components operating under conditions of imminent brittle fracture. The reliability, taken as a complementary probability of brittle fracture initiation, is discussed, taking into account the character of the defect size statistical distribution, material mechanical properties, and varying loading and stress conditions of the component. Application of this method on Ni?Cr steel has demonstrated that there is very good agreement of the fracture behaviour predicted scatter with experimental results. This probability approach is compared with a deterministic reliability method originating from computations of safety factors. Its rational evaluation, as a function of the acceptable probability of fracture instability, provides a highly effective tool for designing of engineerin (en)
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| Title
| - Micro-structural reliability design of brittle materials
- Micro-structural reliability design of brittle materials (en)
- Mikrostrukturní design spolehlivosti křehkých materiálů (cs)
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| skos:prefLabel
| - Micro-structural reliability design of brittle materials
- Micro-structural reliability design of brittle materials (en)
- Mikrostrukturní design spolehlivosti křehkých materiálů (cs)
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| skos:notation
| - RIV/61989100:27360/07:00016229!RIV09-GA0-27360___
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
| - P(GA106/06/0646), Z(AV0Z30860518)
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/61989100:27360/07:00016229
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - Cleavage strength; Brittle fracture; Fracture toughness; Fracture probability; Reliability; Safety factor (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...odStatuVydavatele
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
| - Engineering Fracture Mechanics
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...vavai/riv/projekt
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| http://linked.open...UplatneniVysledku
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| http://linked.open...v/svazekPeriodika
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| http://linked.open...iv/tvurceVysledku
| - Strnadel, Bohumír
- Byczanski, P.
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| http://linked.open...n/vavai/riv/zamer
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| issn
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| number of pages
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| http://localhost/t...ganizacniJednotka
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| is http://linked.open...avai/riv/vysledek
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