Results 11 to 20 of about 1,261 (166)

Effects of Mo addition on crack tip opening displacement (CTOD) in heat affected zones (HAZs) of high-strength low-alloy (HSLA) steels. [PDF]

Sci Rep, 2019
AbstractEffects of Mo addition on microstructures and crack tip opening displacement (CTOD) in heat affected zones (HAZs) of three high-strength low-alloy (HSLA) steels were investigated in this study, and the correlation between them was explained by fracture mechanisms related with martensite-austenite constituent (MA) characteristics.
Lee SG, Kim B, Kim WG, Um KK, Lee S.
europepmc   +6 more sources

Effects of Finish Rolling Temperature on the Critical Crack Tip Opening Displacement (CTOD) of Typical 500 MPa Grade Weathering Steel

Metals, 2023
In this study, the effect of finish rolling temperature on the critical crack tip opening displacement (CTOD) of typical 500 MPa grade weathering steel was elucidated. The microstructures were observed via optical microscope (OM), scanning electron microscope (SEM), transmission electron microscope (TEM), and electron back-scattered diffraction (EBSD).
Liyang Zhao, Qingfeng Wang, Wang Qingfeng   +2 more
exaly   +4 more sources

Experimental investigations of the critical values of J-integral and crack tip opening displacement (CTOD) of high-density poly-ethylene PE100 elbow

Engineering Failure Analysis, 2022
Abstract The present study aims to characterize the cracking behaviour of high-density poly-ethylene (HDPE) pipe elbow. Experimental studies were performed to determine the mechanical behaviour of HDPE and study the anisotropy of the material. Tension tests were performed on compact tension (CT) specimens to identify the toughness value, expressed by
Manel Dallali, Z Azari
exaly   +4 more sources

A modified model for calculating crack tip opening displacement (CTOD) considering fracture process zone (FPZ) in rock

Geomechanics and Geophysics for Geo-Energy and Geo-Resources
AbstractA new CTOD calculation method is investigated in this study, considering the FPZ and the effective Young’s modulus. The calculated CTOD values from four theoretical models are compared with the measured CTOD values from the three-point beam experiments, and the differences between them are analyzed.
Yang Qiao, Zong-Xian Zhang, Zhang Zong-Xian   +2 more
exaly   +4 more sources

A study of the correlation between crack tip opening displacement (CTOD) and stretch zone width (SZW)

Scripta Metallurgica, 1986
Scripta Metallurgica 20 (1986) 1575-1580.
Department of Materials Science and Engineering University of Florida, Gainesville, Florida, USA ( host institution ), Hoelzer, D.T., Ali, J.A., Ebrahimi, F.   +3 more
openaire   +3 more sources

Electrostatically Reinforced Double Network Granular Hydrogels. [PDF]

Adv Sci (Weinh)
Electrostatically reinforced double network granular hydrogels (DNGHs) with cartilage‐like fracture energy are introduced. An empirical model predicts the composition‐dependent fracture energy based on dissipation zone size, contact area, and inter‐particle adhesion energy. Thanks to their granular structure and the inter‐particle attraction, the DNGHs
Yuan T, Li C, Kolinski JM, Amstad E.
europepmc   +2 more sources

Strain Field Around Individual Dislocations Controls Failure. [PDF]

Small Methods
By conducting in situ transmission electron microscopy strain mapping during a nanoscale fracture experiment, the dislocation processes taking place at the crack tip in the rather brittle metal chromium is detailed. Moreover, for the first time, the local stress fields of the dislocations shielding the crack is directly measured. Abstract Understanding
Gammer C, Issa I, Minor AM, Ritchie RO, Kiener D.   +4 more
europepmc   +2 more sources

Investigation of fracture properties of mode I fracture in heat-treated granite [PDF]

Scientific Reports
The mode I fracture properties of granite under high-temperature conditions were investigated to reveal the influence of different heat treatment temperatures on the fracture toughness, crack propagation behavior, and brittle-ductile transition of ...
Shaoqing Niu, Jinwen Wu, Shuping Chen, Jinchang Zhao   +3 more
doaj   +2 more sources

Characteristics of Separations in Fracture After Crack Tip Opening Displacement Tests of Low-Carbon Microalloyed Offshore Steel S460MLO

Alloys
Using the results from testing industrial batches of 23 mm steel heavy plates after thermomechanical rolling and subsequent post-weld heat treatment, the patterns of fatigue crack formation in the fracture specimens during CTOD (Crack Tip Opening ...
Eugene Goli-Oglu, Marco Palombo, Andrei Filatov   +2 more
doaj   +2 more sources

Experimental evaluation of CTOD in constant amplitude fatigue crack growth from crack tip displacement fields [PDF]

Fracture and Structural Integrity, 2017
In the current work an experimental study of the crack tip opening displacement (CTOD) is performed to evaluate the ability of this parameter to characterise fatigue crack growth.
J.M. Vasco-Olmo, F.A. Díaz , F.V. Antunes , M.N. James   +3 more
doaj   +3 more sources