Paper Title:
Analysis of the Influence of Microstructure Heterogeneity and Mechanical Properties of Welded Joint Constituents on Fracture Toughness for Plane Strain, KIc
  Abstract

The problem of fracture toughness, KIc, determination at a crack tip localized in a welded joint is placed in principle because fracture mechanics assumes homogenous material, not only around the crack tip but on a distance from it, in order to maintain valid theoretical assumptions and importance of the fracture toughness as the property measured by some of the fracture mechanics methods. Welded joint, as an integral part of a structure, represents inhomogeneity by microstructure and mechanical properties, often by geometrical form, and by the stress field as well, which are affected by various factors as well as residual stresses after welding [1]. However, these general difficulties did not disenable experimental determination of the fracture toughness under plane strain, KIc, in certain critical areas of a welded joint, or welded joint as a whole, but rather there are difficulties in interpreting the meaning of the measured values. Specimens for the fracture mechanics parameters determination are specimens with cracks, and cracks appears in welded joints as the most critical defects.

  Info
Periodical
Key Engineering Materials (Volumes 488-489)
Edited by
Z. Tonković and M.H. Aliabadi
Pages
617-620
DOI
10.4028/www.scientific.net/KEM.488-489.617
Citation
I. Čamagić, N. Vasić, Z. Burzić, A. Sedmak, "Analysis of the Influence of Microstructure Heterogeneity and Mechanical Properties of Welded Joint Constituents on Fracture Toughness for Plane Strain, KIc", Key Engineering Materials, Vols. 488-489, pp. 617-620, 2012
Online since
September 2011
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: Tomáš Denk, Vladislav Oliva, Aleš Materna
Abstract:A two-parameter constraint-based fracture mechanics approach is used to explain the effect of the constraint on the apparently anomalous...
307
Authors: Young Pyo Kim, Cheol Man Kim, Woo Sik Kim, Kwang Seon Shin
Abstract:A clear understanding of fatigue properties for the pipeline steel and its weld is important to provide information for pipeline design...
303
Authors: Won Beom Kim, Jeom Kee Paik
Abstract:In this research, corrosion fatigue tests using 490MPa TMCP steel were performed in synthetic seawater condition to investigate the...
1043
Authors: Stanislav Seitl, Pavel Hutař, Zdeněk Knésl
Abstract:The formulations of fatigue crack growth prediction are still mostly based on phenomenological models. A commonly used formula in the field...
557
Authors: Yan Hua Zhao, Hua Zhang, Wei Dong
Abstract:The wedge splitting (WS) test is now a promising method to perform stable fracture mechanics tests on concrete-like quasi brittle materials....
425