DOI: 10.1063/1.3157276. Notch insensitive fracture in nanoscale thin films

Notch insensitive fracture in nanoscale thin films

10.1063/1.3157276

Crossref journal-article

AIP Publishing

Applied Physics Letters (317)

Abstract

To study the effect of stress concentration at the nanoscale, we performed fracture experiments on single edge notched thin film specimens inside the transmission electron microscope. Even at about 4 GPa stress at the notch tip, the specimens failed far away from the notch at places with no apparent stress concentration. The in situ electron microscopy showed evidence of little or no plastic deformation at the notch tip. We propose that the apparent notch insensitivity arises from the breakdown of the classical fracture mechanics at the nanoscale, where materials fail by reaching a uniform rupture stress and not due to stress concentration.

Bibliography

Kumar, S., Haque, M. A., & Gao, H. (2009). Notch insensitive fracture in nanoscale thin films. Applied Physics Letters, 94(25).

Authors 3

S. Kumar (first)
M. A. Haque (additional)
H. Gao (additional)

References 15 Referenced 58

10.1007/BF02666659 / Metall. Trans. A (1989)
10.1103/PhysRevB.77.195439 / Phys. Rev. B (2008)
10.1016/j.actamat.2004.08.045 / Acta Mater. (2005)
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10.1126/science.1098741 / Science (2004)
10.1016/j.pmatsci.2005.08.003 / Prog. Mater. Sci. (2006)
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10.1115/1.1988348 / ASME J. Appl. Mech. (2005)
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Dates

Type	When
Created	16 years, 2 months ago (June 22, 2009, 6:26 p.m.)
Deposited	2 years, 2 months ago (June 23, 2023, 5:55 a.m.)
Indexed	3 weeks, 6 days ago (July 30, 2025, 6:53 a.m.)
Issued	16 years, 2 months ago (June 22, 2009)
Published	16 years, 2 months ago (June 22, 2009)
Published Online	16 years, 2 months ago (June 22, 2009)
Published Print	16 years, 2 months ago (June 22, 2009)

Funders 0

None

BibTeX

@article{Kumar_2009, title={Notch insensitive fracture in nanoscale thin films}, volume={94}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.3157276}, DOI={10.1063/1.3157276}, number={25}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Kumar, S. and Haque, M. A. and Gao, H.}, year={2009}, month=jun }

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