Significance of Fracture Toughness Test Results of Beam Welds in Evaluation of Brittle Fracture Performance of Girth Welded Pipe Joints

2007 ◽  
Vol 129 (4) ◽  
pp. 609 ◽  
Author(s):  
Mitsuru Ohata ◽  
Masao Toyoda ◽  
Nobuyuki Ishikawa ◽  
Toyohisa Shinmiya
Keyword(s):  
Fracture Toughness ◽  
Brittle Fracture ◽  
Fracture Toughness Test ◽  
Test Results ◽  
Toughness Test ◽  
Pipe Joints ◽  
Fracture Performance ◽  
Welded Pipe

Experimental Investigation on Relative Crack Length For Fracture Toughness of Concrete

2010 ◽  
Vol 146-147 ◽  
pp. 1524-1528 ◽  
Author(s):  
Xue Zhi Wang ◽  
Zong Chao Xu ◽  
Zhong Bi ◽  
Hao Wang
Keyword(s):  
Fracture Toughness ◽  
Experimental Investigation ◽  
Crack Length ◽  
Fracture Toughness Test ◽  
Test Results ◽  
Toughness Test ◽  
Wedge Splitting Test ◽  
Splitting Test ◽  
Wedge Splitting

The wedge splitting test specimens with three series of different relative crack length were used to study the influences of relative crack length on the fracture toughness of common concrete. The suitable formulation for fracture toughness of concrete with different relative crack length was gotten on comparing between fracture toughness test results and computation results of the model developed from Hu formula.

Fracture Assessment of Welded Joint With Geometrical Discontinuity Using the Weibull Stress

2006 ◽  
Author(s):  
Satoshi Igi ◽  
Takahiro Kubo ◽  
Masayoshi Kurihara ◽  
Fumiyoshi Minami
Keyword(s):  
Fracture Toughness ◽  
Brittle Fracture ◽  
Welded Joint ◽  
Fracture Toughness Test ◽  
Geometrical Condition ◽  
Stress Criterion ◽  
Toughness Test ◽  
Fracture Assessment ◽  
Geometrical Discontinuity ◽  
Weibull Stress

Recently the Weibull stress is used as a fracture driving force parameter in fracture assessment. The Weibull stress is derived from a statistical analysis of local instability of micro cracks leading to brittle fracture initiation. The critical Weibull stress is expected to be a critical parameter independent of the geometrical condition of specimens. Fracture toughness test using 3-point bending and tensile tests of welded joint specimens with geometrical discontinuity were conducted in order to study the applicability of fracture assessment procedure based on Weibull stress criterion. Steel plates prepared for this study had tensile strength of 490 MPa for structural use. Two kinds of welded joint specimens, “one-bead welded joint” and “multi-pass welded joint” were prepared for fracture toughness test by using gas metal are welding. In tensile test specimen, corner flaws were introduced at the geometrical discontinuity part at where stress concentration is existed. Three dimensional elastoplastic finite element analyses were also carried out using the welded joint specimen models in order to calculate the Weibull stress. The critical loads for brittle fracture predicted by the Weibull stress criterion from CTOD test results of one-bead and multi-pass welded joint specimens show fairly good agreement with experimental results of welded joint specimens with geometrical discontinuity.

The Effects of Residual Stress, Loading, and Crack Geometry on SEPB Fracture Toughness Test Results

2001 ◽  
Vol 29 (3) ◽  
pp. 271 ◽  
Author(s):  
DR Petersen ◽  
RE Link ◽  
S Grendahl ◽  
R Bert ◽  
K Cho ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Residual Stress ◽  
Fracture Toughness Test ◽  
Test Results ◽  
Crack Geometry ◽  
Toughness Test

scholarly journals IMPACT FRACTURE TOUGHNESS TEST OF CERAMIC REINFORCED METALS

1991 ◽  
Vol 01 (C3) ◽  
pp. C3-769-C3-774 ◽  
Author(s):  
S. TAKAHASHI ◽  
K. KISHIMOTO ◽  
S. AOKI
Keyword(s):  
Fracture Toughness ◽  
Impact Fracture ◽  
Fracture Toughness Test ◽  
Toughness Test

A Notched Ring Fracture Toughness Test for Ceramics

1978 ◽  
pp. 473-482 ◽  
Author(s):  
D. J. Rowcliffe ◽  
R. L. Jones ◽  
J. K. Gran
Keyword(s):  
Fracture Toughness ◽  
Fracture Toughness Test ◽  
Ring Fracture ◽  
Toughness Test
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