BROWSE

Related Researcher

Author

Lee, Young-Joo
Structural Reliability and Disaster Risk Lab (SRDR)
Research Interests
  • Structural Reliability, Disaster Risk, Lifeline, Network Reliability, Uncertainty

ITEM VIEW & DOWNLOAD

Continuous fatigue crack length estimation for aluminum 6061-T6 plates with a notch

Cited 0 times inthomson ciCited 0 times inthomson ci
Title
Continuous fatigue crack length estimation for aluminum 6061-T6 plates with a notch
Author
Lim, Hyung JinLee, Young-JooSohn, Hoon
Keywords
Fatigue crackCrack length estimationStress-life (S-N) methodParis’ law
Issue Date
201904
Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
Citation
MECHANICAL SYSTEMS AND SIGNAL PROCESSING, v.120, no., pp.356 - 364
Abstract
This paper proposes an estimation technique of fatigue crack length for an aluminum 6061-T6 plate structure with a notch using a stress-life (S-N) curve. First, an S-N curve is obtained from multiple specimen tests by applying constant-amplitude cyclic loading with different stress levels. Next, the parameters of the Paris’ law are estimated from the S-N curve by solving an optimization problem. Then, based on the Paris’ law, the current crack length is continuously estimated by counting the elapsed fatigue loading cycles. The novelty of this study lies on the followings: (1) estimation of fatigue crack length using only the S-N curve for online fatigue crack monitoring, (2) estimation and experimental validation of the Paris’ law parameters estimated from the S-N curve, and (3) experimental validation of the crack length estimation technique for notched aluminum 6061-T6 plates with various thicknesses.
URI
Go to Link
DOI
http://dx.doi.org/10.1016/j.ymssp.2018.10.018
ISSN
0888-3270
Appears in Collections:
UEE_Journal Papers

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qr_code

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU