Results 171 to 180 of about 3,061 (207)

CTOD Testing of HAZ and Analysis of Pop-In Behavior

Journal of Offshore Mechanics and Arctic Engineering, 1990
Abstract HAZ CTOD tests were carried out on nonmatching bead on plate SAW weldments at room temperature. The effects of the notch position and weld metal matching on the HAZ toughness were studied by taking weld metals with three strength levels (austenitic, ferritic and martensitic weld metals). The notches were located parallel (L-type)
M. Koc¸ak, L. Chen, G. Terlinde, G. Gnirss, K.-H. Schwalbe   +4 more
openaire   +1 more source

A unified prediction model for physically small crack and long crack growth based on modified CTOD

Engineering Fracture Mechanics, 2022
W. Zhang, Lindong Chai, L. Ren, Liang Cai   +3 more
semanticscholar   +1 more source

Study on fracture behavior of pipeline girth weld based on CTOD-A method and Gurson ductile damage model

Theoretical and applied fracture mechanics (Print), 2022
Yinhui Zhang, J. Shuai, Zhiyang Lv, Tieyao Zhang   +3 more
semanticscholar   +1 more source

Measurements of CTOD and CTOA Around Surface-Crack Perimeters and Relationships Between Elastic and Elastic-Plastic CTOD Values

1990
A difficulty associated with predicting structural integrity is that the surface cracks found in structural components are three-dimensional whereas the crack-tip opening displacement (CTOD) and J-integral analytical techniques were derived from two-dimensional theory.
WG Reuter, WR Lloyd
openaire   +1 more source

Further investigation of J-CTOD relationship for clamped SET specimens based on finite element analyses – Part I: Homogeneous materials

Theoretical and applied fracture mechanics (Print), 2022
Chuanjie Duan, Shuhua Zhang
semanticscholar   +1 more source

CTOD and J Relationships for a Growing Crack

1986
Tests were performed on three steels, A533-B, A508 Class 2, and ASTM A240 Thype 304 stainless. These materials exhibit a wide range of properties; their strain-hardening exponents n are within the range of 8 to 12 while their flow stresses sigma-O are within the range of 45 to 90 ksi.
openaire   +1 more source

Numerical Determination of Fatigue Threshold from CTOD

Solid State Phenomena, 2016
The experimental procedure to obtain valid and comparable values of ΔKth is laborious and time consuming. The objective of this work is to determine ΔKth using a numerical approach. The CTOD is plotted versus load, and the fatigue threshold corresponds to the onset of plastic deformation.
Daniel Camas, Pedro Loureiro, Pedro Prates, Fernando Antunes   +3 more
openaire   +1 more source

Effect of physical crack growth on CTOD measurement

International Journal of Fracture, 1987
In high toughness ductile materials crack initiation is generally followed by a region of stable cracking. Such regions have been conveniently characterized in terms of crack growth resistance curves. Both J-integral and crack tip opening displacement (CTOD) concepts are successfully used to describe ductile crack growth using J-Aa and CTOD-Aa R-curves,
openaire   +1 more source

On the Experimental Determination of CTOD Based R-Curves

1986
It is demonstrated that the British Standard BS 5762 for measuring the crack tip opening displacement (CTOD) can be modified such that the resulting CTOD is equal to the CTOD measured at the fatigue crack tip. The modifications consist of accounting for crack growth and adjustment of the rotation factor to the material under consideration.
D. Hellmann, K.-H. Schwalbe
openaire   +1 more source

New J-CTOD empirical correlations for p-SPT specimens

, 2021
Taslim D. Shikalgar, B. Dutta, J. Chattopadhyay   +2 more
semanticscholar   +1 more source