Aplikace kvantitativní mikrofraktografie při hodnocení únavové odolnosti nosníku křídla letounu

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Application of Quantitative Microfractography in Damage-Tolerance and Fatigue Evaluation of Wing Spar

Popis výsledku v původním jazyce

Experimental study was focused on the fatigue crack propagation in the model specimen the geometry of which corresponds to the Ayres Loadmaster LM 200 wing spar. During the high-cycle full-scale fatigue test, the monotonic four point cyclic bending was applied. Fatigue crack growth in the spar web was visual monitored, but the measurement was impossible so far the flange plate covers the web. The limited macroscopic data set was completed by the fractographic reconstitution of fatigue crack history based on the striation spacing measurement. During the fractographic data processing, various hypotheses were applied. Synthesis of macroscopic data with the fractographic ones gives detailed information on the real course of the fatigue process in the critical area (e.g., time sequence of individual fatigue cracks, their interaction etc.). Similar information on locations and modes of damage due to fatigue are substantial for damage-tolerance evaluation of structure components.

Název v anglickém jazyce

Application of Quantitative Microfractography in Damage-Tolerance and Fatigue Evaluation of Wing Spar

Popis výsledku anglicky

Experimental study was focused on the fatigue crack propagation in the model specimen the geometry of which corresponds to the Ayres Loadmaster LM 200 wing spar. During the high-cycle full-scale fatigue test, the monotonic four point cyclic bending was applied. Fatigue crack growth in the spar web was visual monitored, but the measurement was impossible so far the flange plate covers the web. The limited macroscopic data set was completed by the fractographic reconstitution of fatigue crack history based on the striation spacing measurement. During the fractographic data processing, various hypotheses were applied. Synthesis of macroscopic data with the fractographic ones gives detailed information on the real course of the fatigue process in the critical area (e.g., time sequence of individual fatigue cracks, their interaction etc.). Similar information on locations and modes of damage due to fatigue are substantial for damage-tolerance evaluation of structure components.

Druh

A - Audiovizuální tvorba

CEP obor

JL - Únava materiálu a lomová mechanika

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2004

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

ISBN

0-9533991-6-8

Místo vydání

Edinburgh

Název nakladatele resp. objednatele

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Verze

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Identifikační číslo nosiče

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