Quantitative fractography of fatigue cracks: A new solution in 3D

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F19%3A00346209" target="_blank" >RIV/68407700:21340/19:00346209 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.prostr.2020.01.071" target="_blank" >https://doi.org/10.1016/j.prostr.2020.01.071</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.prostr.2020.01.071" target="_blank" >10.1016/j.prostr.2020.01.071</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Quantitative fractography of fatigue cracks: A new solution in 3D

Popis výsledku v původním jazyce

A general method of statistical classification for estimating the fatigue crack growth rate on the basis of 3D features of fracture surfaces is proposed. Three CT specimens from stainless steel AISI 304L were loaded by a constant cycle, the same with regular overload, and a periodically repeating block of random cycles. Crack growth was recorded in detail. Fracture surfaces were documented by 3D reconstructions of their morphology along central axis in crack growth direction. 3D reconstructions were decomposed in 8 levels by means of sequential wavelet transformation. Each level was represented by 1662 features - parameters of roughness and morphometry computed from line profiles and areal data. Reconstitution of crack growth history on the basis of a single 3D feature at all levels of decomposition was investigated. In all cases, several tens of features enabled this with an acceptable precision. Quality of results is documented by graphs comparing crack growth rates and crack growth history estimated on the basis of fracture surface with real values known from the experiment. Training and testing approach has been applied.

Název v anglickém jazyce

Quantitative fractography of fatigue cracks: A new solution in 3D

Popis výsledku anglicky

A general method of statistical classification for estimating the fatigue crack growth rate on the basis of 3D features of fracture surfaces is proposed. Three CT specimens from stainless steel AISI 304L were loaded by a constant cycle, the same with regular overload, and a periodically repeating block of random cycles. Crack growth was recorded in detail. Fracture surfaces were documented by 3D reconstructions of their morphology along central axis in crack growth direction. 3D reconstructions were decomposed in 8 levels by means of sequential wavelet transformation. Each level was represented by 1662 features - parameters of roughness and morphometry computed from line profiles and areal data. Reconstitution of crack growth history on the basis of a single 3D feature at all levels of decomposition was investigated. In all cases, several tens of features enabled this with an acceptable precision. Quality of results is documented by graphs comparing crack growth rates and crack growth history estimated on the basis of fracture surface with real values known from the experiment. Training and testing approach has been applied.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

9th International Conference Materials Structure & Micromechanics of Fracture (MSMF9)

ISBN

—

ISSN

2452-3216

e-ISSN

—

Počet stran výsledku

6

Strana od-do

107-112

Název nakladatele

Elsevier B.V.

Místo vydání

Amsterdam

Místo konání akce

Brno

Datum konání akce

26. 6. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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