Results 151 to 160 of about 3,061 (207)
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CTOD: Cross-Attentive Task-Alignment for One-Stage Object Detection
IEEE transactions on circuits and systems for video technology (Print)Existing one-stage object detectors are commonly implemented in a multi-task learning based manner, which simultaneously solves two different sub-tasks: object classification and localization.
Ruilin Yao +3 more
semanticscholar +1 more source
Comparison of methods to determine CTOD for SENB specimens in different strain hardening steels
Fatigue and Fracture of Engineering Materials and Structures, 2018Christopher Brown +2 more
exaly +2 more sources
Investigating the constraint role in J-CTOD relationship for compact tension (CT) specimen
Research on Engineering Structures and MaterialsThe Crack Tip Opening Displacement (CTOD or δ) estimation from J-integral (J) defined by ASTM 1820 considers the CTOD dependency on material properties, and the constraint factor (m).
Nagaraj Ekabote
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Fatigue crack growth versus plastic CTOD in the 304L stainless steel
Engineering Fracture Mechanics, 2019The plastic CTOD range, δp, which quantifies crack tip plastic deformation, is used to study fatigue crack propagation instead of the classical ΔK elastic parameter. A da/dN-δp model was defined for the 304L stainless steel.
F. Antunes +5 more
semanticscholar +1 more source
A review of the CTOA/CTOD fracture criterion
Engineering Fracture Mechanics, 2003Abstract The crack-tip-opening angle or displacement (CTOA/CTOD) fracture criterion is one of the oldest fracture criteria applied to fracture of metallic materials with cracks. During the past two decades, the use of elastic–plastic finite-element analyses to simulate fracture of laboratory specimens and structural components using the CTOA ...
J.C Newman, M.A James, U Zerbst
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A stretched zone method for ctod evaluation
International Journal of Fracture, 1991where Aa=~. h is the length (or width) of the stretched zone. Conventionally, the deformed crack tip is considered to be of a semi-circular type leading to a blunting angle of 45 degrees. However, viewpoints contrary to this have been expressed [3-5].
R. K. Pandey, P. Sundaram, A. N. Kumar
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, 2020
Engineering solutions for crack-tip opening displacement (CTOD) and J-integral estimations for pipelines with a surface crack are proposed based on parametric finite element (FE) analyses for various geometries, material properties, and internal ...
Y. Jang +4 more
semanticscholar +1 more source
Engineering solutions for crack-tip opening displacement (CTOD) and J-integral estimations for pipelines with a surface crack are proposed based on parametric finite element (FE) analyses for various geometries, material properties, and internal ...
Y. Jang +4 more
semanticscholar +1 more source
Application of CTOD in atomistic modeling of fracture
Engineering Fracture Mechanics, 2015Abstract In this presentation we first review a method to use crack tip displacements and an estimate of the plastic zone to estimate fracture toughness. The same procedure was then applied on nanosized bcc-Fe cantilever beams with an initial crack. The results were then compared to literature.
Jørn Skogsrud, Christian Thaulow
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Materials Science Forum, 2012
This paper presents a new fracture assessment method, IST method developed as ISO 27306. The IST method implements an equivalent CTOD ratio, β, for the CTOD toughness correction for constraint loss in structural components. Using β, the standard fracture toughness specimen and structural components are linked at the same level of the Weibull stress ...
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This paper presents a new fracture assessment method, IST method developed as ISO 27306. The IST method implements an equivalent CTOD ratio, β, for the CTOD toughness correction for constraint loss in structural components. Using β, the standard fracture toughness specimen and structural components are linked at the same level of the Weibull stress ...
openaire +1 more source
International Journal of Pressure Vessels and Piping, 2019
The single edge notched tension (SENT) test is commonly used to evaluate the less-conservative fracture toughness of pipeline steels. The R-curve (crack tip opening displacement (CTOD)-crack growth) behavior measured by SENT tests is similar to that ...
Iman Ameli +6 more
semanticscholar +1 more source
The single edge notched tension (SENT) test is commonly used to evaluate the less-conservative fracture toughness of pipeline steels. The R-curve (crack tip opening displacement (CTOD)-crack growth) behavior measured by SENT tests is similar to that ...
Iman Ameli +6 more
semanticscholar +1 more source