Micronotches for studying growth of small cracks.
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| Title: | Micronotches for studying growth of small cracks. |
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| Authors: | Wessel, W.1, Mildner, J.2, Pitz, P.1, Brueckner‐Foit, A.1, Wollenhaupt, M.2,3, Baumert, T.2 |
| Source: | Fatigue & Fracture of Engineering Materials & Structures. Jun2015, Vol. 38 Issue 6, p673-680. 7p. 2 Black and White Photographs, 4 Diagrams, 4 Graphs. |
| Subjects: | Lamé's functions, Trigger circuits, Femtosecond lasers, Ablation (Aerothermodynamics), Alloys |
| Abstract: | Well-defined starter cracks at preselected sites in the microstructures are needed for systematic investigation of the characteristic features of microstructure controlled growth of small cracks. A kinked ellipsoidal micronotch with very high notch factor at the trailing kink is proposed, which triggers controlled crack initiation along the notch contour. These micronotches can be machined by femtosecond laser ablation with virtually no heat-affected zone at the edges. Crack growth results obtained for an intermetallic γ-TiAl alloy are presented as an illustrative example. [ABSTRACT FROM AUTHOR] |
| Copyright of Fatigue & Fracture of Engineering Materials & Structures is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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