Results 11 to 20 of about 21,021 (266)
Three-Dimensional Surface Crack Growth of Maraging Steel Spherical Pressure Shell
Journal of Marine Science and Engineering, 2021 This study focused on the three-dimensional surface crack growth of a spherical pressure shell. Eight maraging steel 18Ni (250) samples were fabricated and tested, and the fatigue crack growth rate curves were obtained.
Yongmei Zhu, Rujun Li, Jiahao Yang
doaj +1 more source
Crack Unet: Crack Recognition Algorithm Based on Three-Dimensional Ground Penetrating Radar Images
Sensors, 2022 Three-dimensional (3D) ground-penetrating radar is an effective method for detecting internal crack damage in pavement structures. Inefficient manual interpretation of radar images and high personnel requirements have substantially restrained the ...
Jiaming Tang +6 more
doaj +1 more source
Application of J2 Integral Method in Calculating Complicated Stress Intensity Factors on Three-dimensional Components [PDF]
E3S Web of Conferences, 2021 In this paper, a technique to determine complicated stress intensity factors on three-dimensional components, which based on the conservation law and the elementary mechanics is proposed, it only needs the geometric relationship between multiple singular
Li Long. +4 more
doaj +1 more source
A safety assessment approach to pressure vessels based on machine learning
Frontiers in Materials, 2022 The safety assessment of a pressure vessel with a surface crack is an important part of the safety assessment of engineering equipment. However, the existing methods are mostly based on the assumption of plane specimens and the K criterion applicable to ...
Xing Zhang +5 more
doaj +1 more source
工程科学学报, 2022 The type, proportion, and charging method of explosives produce different stress waveforms, which greatly affect rock crack propagation. Because of the complex interaction law between waveform parameters such as the peak value, wavelength, energy, and ...
Yong-qi LI +3 more
doaj +1 more source
The Stress Intensity Factor of convex embedded polygonal cracks
Fracture and Structural Integrity, 2023 In the present work, a simple formula for the evaluation of the stress intensity factor (SIF) of convex embedded polygonal cracks has been proposed. This formula is structured as a correction factor of the Oore-Burns equation and is based on accurate ...
Paolo Livieri, Fausto Segala
doaj +1 more source
Taiyuan Ligong Daxue xuebao, 2021 In order to study the effect of temperature on the permeability of anthracite coal cracks, Jincheng anthracite coal was used as the research object, and the pyrolysis CT scan of Jincheng anthracite coal under different temperatures was performed by using
Yong WANG +3 more
doaj +1 more source
Fully Automated Three-dimensional Crack Modelling Using Tetrahedral Finite Element
Hangkong gongcheng jinzhan, 2022 Producing structured mesh at the immediate vicinity of the crack front for three-dimensional(3D)crack modelling is a very time consuming and difficult task.A geometry feature based method for 3D crack modelling based on virtual crack closure-integral ...
GAO Wen, WANG Shengnan
doaj +1 more source
Mechanical Engineering Journal, 2021 The numerical scheme of the O-integral is formulated for precisely evaluating the stress intensity factor of an embedded crack with arbitrary shape in an infinite elastic body.
Masayuki ARAI, Seiya SOTA
doaj +1 more source
Rock and Soil Mechanics, 2021 Rock rupture refers to the process of crack initiation, propagation and coalescence. In order to study the dynamic propagation and evolution process of internal cracks in rock subjected to deformation and failure, industrial CT was used to conduct phased
ZHANG Yan-bo +7 more
doaj +1 more source