Schönherr, Josef Arthur ; Duarte, Larissa ; Madia, Mauro ; Zerbst, Uwe ; Geilen, Max Benedikt ; Klein, Marcus ; Oechsner, Matthias (2022)
Robust Determination of Fatigue Crack Propagation Thresholds from Crack Growth Data.
In: Materials, 15 (14)
doi: 10.3390/ma15144737
Artikel, Bibliographie
Dies ist die neueste Version dieses Eintrags.
Kurzbeschreibung (Abstract)
The robust determination of the threshold against fatigue crack propagation ΔKth is of paramount importance in fracture mechanics based fatigue assessment procedures. The standards ASTM E647 and ISO 12108 introduce operational definitions of ΔKth based on the crack propagation rate da/dN and suggest linear fits of logarithmic ΔK– da/dN test data to calculate ΔKth. Since these fits typically suffer from a poor representation of the actual curvature of the crack propagation curve, a method for evaluating ΔKth using a nonlinear function is proposed. It is shown that the proposed method reduces the artificial conservativeness induced by the evaluation method as well as the susceptibility to scatter in test data and the influence of test data density.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2022 |
| Autor(en): | Schönherr, Josef Arthur ; Duarte, Larissa ; Madia, Mauro ; Zerbst, Uwe ; Geilen, Max Benedikt ; Klein, Marcus ; Oechsner, Matthias |
| Art des Eintrags: | Bibliographie |
| Titel: | Robust Determination of Fatigue Crack Propagation Thresholds from Crack Growth Data |
| Sprache: | Englisch |
| Publikationsjahr: | 2022 |
| Ort: | Darmstadt |
| Verlag: | MDPI |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Materials |
| Jahrgang/Volume einer Zeitschrift: | 15 |
| (Heft-)Nummer: | 14 |
| Kollation: | 21 Seiten |
| DOI: | 10.3390/ma15144737 |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | The robust determination of the threshold against fatigue crack propagation ΔKth is of paramount importance in fracture mechanics based fatigue assessment procedures. The standards ASTM E647 and ISO 12108 introduce operational definitions of ΔKth based on the crack propagation rate da/dN and suggest linear fits of logarithmic ΔK– da/dN test data to calculate ΔKth. Since these fits typically suffer from a poor representation of the actual curvature of the crack propagation curve, a method for evaluating ΔKth using a nonlinear function is proposed. It is shown that the proposed method reduces the artificial conservativeness induced by the evaluation method as well as the susceptibility to scatter in test data and the influence of test data density. |
| Freie Schlagworte: | fatigue crack propagation threshold, ISO 12108, ASTM E647, data evaluation methods, experimental determination |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 540 Chemie 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften und Maschinenbau |
| Fachbereich(e)/-gebiet(e): | 16 Fachbereich Maschinenbau 16 Fachbereich Maschinenbau > Fachgebiet und Institut für Werkstoffkunde - Zentrum für Konstruktionswerkstoffe - Staatliche Materialprüfungsanstalt Darmstadt (IfW-MPA) |
| Hinterlegungsdatum: | 02 Aug 2024 12:42 |
| Letzte Änderung: | 02 Aug 2024 12:42 |
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| Suche nach Titel in: | TUfind oder in Google |
Verfügbare Versionen dieses Eintrags
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Robust Determination of Fatigue Crack Propagation Thresholds from Crack Growth Data. (deposited 05 Aug 2022 11:06)
- Robust Determination of Fatigue Crack Propagation Thresholds from Crack Growth Data. (deposited 02 Aug 2024 12:42) [Gegenwärtig angezeigt]
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