scholarly journals Modelling quasi-brittle fracture initiation at a circular hole under biaxial loading

2020 ◽  
Vol 30 ◽  
pp. 179-185
Author(s):  
S.V. Suknev
Keyword(s):  
Brittle Fracture ◽  
Circular Hole ◽  
Biaxial Loading ◽  
Fracture Initiation

scholarly journals On the Characteristics of Brittle Fracture Initiation in a Structurally Stress Concentrated Region (2nd Report)

1980 ◽  
Vol 1980 (148) ◽  
pp. 169-176 ◽  
Author(s):  
Kin-ichi Nagai ◽  
Hiroshi Yajima ◽  
Katsuya Kajimoto ◽  
Takahiro Hino ◽  
Nagio Minami
Keyword(s):  
Brittle Fracture ◽  
Fracture Initiation

scholarly journals Approximate Biaxial Stress Solution for Orthotropic Open-Hole Composite Laminates

1996 ◽  
Vol 5 (4) ◽  
pp. 096369359600500
Author(s):  
C. Filiou ◽  
C. Soutis
Keyword(s):  
Approximate Solution ◽  
Stress Distribution ◽  
Circular Hole ◽  
Composite Laminates ◽  
Composite Laminate ◽  
Biaxial Loading ◽  
Biaxial Stress ◽  
Orthotropic Composite ◽  
Open Hole ◽  
Simple Approximate Solution

A simple approximate solution has been derived for the stress distribution near a circular hole applicable to any orthotropic composite laminate subjected to biaxial loading. The degree of accuracy of this solution was found to be overall acceptable, but strongly dependent upon the laminate lay-up and biaxiality ratio.

Investigation of the Microstructure Factors Affecting the Brittle Fracture Initiation of Pre-Cracked Charpy-Type Samples of VVER-1000 RPV Steel

2013 ◽  
Vol 592-593 ◽  
pp. 635-638
Author(s):  
Evgenia A. Kuleshova ◽  
Maxim A. Artamonov ◽  
Artem D. Erak
Keyword(s):  
Brittle Fracture ◽  
Base Metal ◽  
Fracture Initiation ◽  
Type Specimens ◽  
Fracture Origin ◽  
Factors Affecting ◽  
Three Point Bending ◽  
Weld Metals ◽  
Rpv Steel ◽  
Higher Temperature

The correlation between fracture toughness parameter KJc and cleavage initiation distance (CID) for the three point bending (3PB) pre-crecked Charpy type specimens of VVER-1000 reactor pressure vessel base and weld metals was observed. Two types of brittle fracture origin sites were found: nonmetallic inclusions and grain or subgrain boundaries. It was shown that KJc values are shifted to the higher temperature area for weld metal with respect to base metal data. In case when the initiation origin is grain or subgrain boundary, the KJc values are higher for base metal at the same CID values. This indicates the higher crack resistance of base metal.

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