Development of a micro-beam method to investigate the fatigue crack growth mechanisms of submicron-scale cracks

Y. Yang; H. H. Ruan; J. Lu; N. Yao; W. L. Shan; W. O. Soboyejo

doi:10.1007/s11340-008-9180-y

Author(s)

H. H. Ruan
N. Yao
W. L. Shan
W. O. Soboyejo

Detail(s)

Original language	English
Pages (from-to)	731-742
Journal / Publication	Experimental Mechanics
Volume	49
Issue number	5
Publication status	Published - 2009
Externally published	Yes

Link(s)

DOI	DOI https://doi.org/10.1007/s11340-008-9180-y Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-68649093762&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(c9e8d632-25e4-4690-ab45-881eefd3ea43).html

Abstract

In this paper, we propose a new experimental method to investigate the fatigue crack growth mechanisms of submicron-scale cracks by using freestanding single edge notched micro-beams that are fabricated on the surfaces of conventional bending specimens with the focused ion beam technique. Three dimensional FEM simulations in conjugate with LEFM fracture analysis were carried out to correlate the applied far field stresses with the local crack-tip driving force. For the validation of the new method, micro-beam experiments were conducted on 4340 low alloy steels and the results showed the similar findings compared to those in the literature while revealed undiscovered fatigue damage mechanisms that took place at the submicron and nanometer scales. © Society for Experimental Mechanics 2008.

Research Area(s)

Fatigue, Fatigue tests, Focused ion beam (FIB), Steels

Citation Format(s)

[ RIS ] [ BibTeX ]

Development of a micro-beam method to investigate the fatigue crack growth mechanisms of submicron-scale cracks. / Yang, Y.; Ruan, H. H.; Lu, J. et al.
In: Experimental Mechanics, Vol. 49, No. 5, 2009, p. 731-742.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Yang, Y, Ruan, HH, Lu, J, Yao, N, Shan, WL & Soboyejo, WO 2009, 'Development of a micro-beam method to investigate the fatigue crack growth mechanisms of submicron-scale cracks', Experimental Mechanics, vol. 49, no. 5, pp. 731-742. https://doi.org/10.1007/s11340-008-9180-y

Yang, Y., Ruan, H. H., Lu, J., Yao, N., Shan, W. L., & Soboyejo, W. O. (2009). Development of a micro-beam method to investigate the fatigue crack growth mechanisms of submicron-scale cracks. Experimental Mechanics, 49(5), 731-742. https://doi.org/10.1007/s11340-008-9180-y

Yang Y, Ruan HH, Lu J, Yao N, Shan WL, Soboyejo WO. Development of a micro-beam method to investigate the fatigue crack growth mechanisms of submicron-scale cracks. Experimental Mechanics. 2009;49(5):731-742. doi: 10.1007/s11340-008-9180-y

Yang, Y. ; Ruan, H. H. ; Lu, J. et al. / Development of a micro-beam method to investigate the fatigue crack growth mechanisms of submicron-scale cracks. In: Experimental Mechanics. 2009 ; Vol. 49, No. 5. pp. 731-742.