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Naslov:Intrinsic fatigue limit and the minimum fatigue crack growth threshold
Avtorji:ID Chapetti, Mirco Daniel (Avtor)
ID Gubeljak, Nenad (Avtor)
ID Kozak, Dražan (Avtor)
Datoteke:.pdf materials-16-05874.pdf (4,65 MB)
MD5: A8D9BBD671A2EBAD6551EFD86D34FF2A
URL obdelane datoteke: https://www.mdpi.com/1996-1944/16/17/5874
 
URL https://www.mdpi.com/1996-1944/16/17/5874
 
Jezik:Angleški jezik
Vrsta gradiva:Članek v reviji
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FS - Fakulteta za strojništvo
Opis:In the field of long-life fatigue, predicting fatigue lives and limits for mechanical components is crucial for ensuring reliability and safety. Fracture mechanics tools have enabled the estimation of fatigue lives for components with small cracks or defects. However, when dealing with defects larger than the microstructural characteristic size, estimating the fatigue resistance of a material requires determining the cyclic resistance curve for the defect-free matrix, which depends on knowledge of the material’s intrinsic fatigue limit. This study focuses on the experimental evidence regarding the intrinsic fatigue limit and its correlation with naturally nucleated non-propagating cracks. Fracture mechanics models for small crack propagation are introduced, and their disparities and limitations are analyzed. The concept of intrinsic fatigue limit is then introduced and applied to reanalyze a recent publication. Methods for estimating the intrinsic fatigue limit are explored and applied to experimental results reported in the literature. The need to clarify and accurately predict the intrinsic fatigue limit is highlighted in alloys where the processing generates defects larger than the microstructural size of the matrix, as often observed in materials and components produced using additive manufacturing.In the field of long-life fatigue, predicting fatigue lives and limits for mechanical components is crucial for ensuring reliability and safety. Fracture mechanics tools have enabled the estimation of fatigue lives for components with small cracks or defects. However, when dealing with defects larger than the microstructural characteristic size, estimating the fatigue resistance of a material requires determining the cyclic resistance curve for the defect-free matrix, which depends on knowledge of the material’s intrinsic fatigue limit. This study focuses on the experimental evidence regarding the intrinsic fatigue limit and its correlation with naturally nucleated non-propagating cracks. Fracture mechanics models for small crack propagation are introduced, and their disparities and limitations are analyzed. The concept of intrinsic fatigue limit is then introduced and applied to reanalyze a recent publication. Methods for estimating the intrinsic fatigue limit are explored and applied to experimental results reported in the literature. The need to clarify and accurately predict the intrinsic fatigue limit is highlighted in alloys where the processing generates defects larger than the microstructural size of the matrix, as often observed in materials and components produced using additive manufacturing.
Ključne besede:intrinsic fatigue limit, microstructural fatigue threshold, material defects, fracture mechanics, intrinsic fatigue resistance
Status publikacije:Objavljeno
Verzija publikacije:Objavljena publikacija
Poslano v recenzijo:17.07.2023
Datum sprejetja članka:23.08.2023
Datum objave:28.08.2023
Založnik:MDPI
Leto izida:2023
Št. strani:str. 1-20
Številčenje:Vol. 16, iss. 17, [article no.] 5874
PID:20.500.12556/DKUM-85610 Novo okno
UDK:539.42:620.178.3
COBISS.SI-ID:163221251 Novo okno
DOI:10.3390/ma16175874 Novo okno
ISSN pri članku:1996-1944
Datum objave v DKUM:04.09.2023
Število ogledov:386
Število prenosov:43
Metapodatki:XML DC-XML DC-RDF
Področja:Ostalo
:
CHAPETTI, Mirco Daniel, GUBELJAK, Nenad in KOZAK, Dražan, 2023, Intrinsic fatigue limit and the minimum fatigue crack growth threshold. Materials [na spletu]. 2023. Vol. 16, no. 17,  5874, p. 1–20. [Dostopano 9 april 2025]. DOI 10.3390/ma16175874. Pridobljeno s: https://dk.um.si/IzpisGradiva.php?lang=slv&id=85610
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Gradivo je del revije

Naslov:Materials
Skrajšan naslov:Materials
Založnik:MDPI
ISSN:1996-1944
COBISS.SI-ID:33588485 Novo okno

Licence

Licenca:CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:mehanika loma, utrujenost materiala, meja utrujenosti materiala, deformacije, razpoke, mikrostruktura, zlitine


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