Paper Title:
Creep Crack Interaction of High Temperature Structure with Multiple Cracks
  Abstract

The interaction behavior of two non-aligned through-wall cracks in flat plates is investigated by the finite element method (FEM) under extensive creep condition. The time-dependent fracture parameter C*-integral along the crack tips are calculated and compared to the results of a single crack of the same size. For comparison purpose, the interaction of stress intensity factors (SIFs) is also examined in the study. The results indicated that interaction of multiple cracks is different between the time- dependent fracture characterized by C*-integral and linear elastic fracture noted by SIF. The magnifying factors of time-dependent fracture are obviously larger than that of the linear elastic fracture cases. Therefore, the current re-characterization rule for multiple cracks developed from linear elastic fracture analysis may lead to a non-conservative result and should be modified when it is used in the assessment of time dependent failure.

  Info
Periodical
Key Engineering Materials (Volumes 324-325)
Edited by
M.H. Aliabadi, Qingfen Li, Li Li and F.-G. Buchholz
Pages
105-108
DOI
10.4028/www.scientific.net/KEM.324-325.105
Citation
J. Si, F. Z. Xuan, S. T. Tu, "Creep Crack Interaction of High Temperature Structure with Multiple Cracks", Key Engineering Materials, Vols. 324-325, pp. 105-108, 2006
Online since
November 2006
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Jun Si, Biao Xiao, Xiao Ming Luo, Fu Zhen Xuan
Chapter 3: Instrumentation, Measurement Technologies, Monitoring, Testing and Evaluation, Analysis and Methodology
Abstract:Multiple flaws are often found in many high-temperature structural components. The interaction and coalescence of multiple cracks may...
574
Authors: Mohamed Sahnoun, Djamel Ouinas, B. Bachir Bouiadjra, J. Vina Olay, J. Vina Olay
Chapter 5: Synthesis and Characterization of Materials
Abstract:In this paper, the evaluation of the SIFof a macrocrack in interaction with one or several microcracks in a material containing a geometrical...
245
Authors: Marko Katinic, Drazan Kozak, Ivan Samardzic, Antun Stoic, Zeljko Ivandic, Zlatko Tonkovic
Abstract:The interaction behavior of twin collinear through-wall cracks in tension loaded plate under elastic-plastic condition is investigated by the...
97