Results 1 to 10 of about 1,354,072 (296)

Rock crack initiation triggered by energy digestion. [PDF]

Sci Rep
Abstract The critical value of rock failure is determined by irreversible deformation (inelastic deformation, damage, and other internal dissipation) processes and external conditions before rock failure. Nevertheless, a thorough explanation of the mechanism causing cracks in rock material has not yet been provided.
Yan L, Chang J, Manda E, Li H, Wang Q, Jing Y.   +5 more
europepmc   +4 more sources

The Influence of Porosity on Fatigue Crack Initiation in Additively Manufactured Titanium Components. [PDF]

Sci Rep, 2017
Without post-manufacture HIPing the fatigue life of electron beam melting (EBM) additively manufactured parts is currently dominated by the presence of porosity, exhibiting large amounts of scatter.
Tammas-Williams S, Withers PJ, Todd I, Prangnell PB.   +3 more
europepmc   +2 more sources

An assessment of phase field fracture: crack initiation and growth [PDF]

Philosophical Transactions of the Royal Society A, 2021
The phase field paradigm, in combination with a suitable variational structure, has opened a path for using Griffith’s energy balance to predict the fracture of solids.
Philip K. Kristensen, C. F. Niordson, E. Martínez-Pañeda   +2 more
semanticscholar   +1 more source

Multi-Dimensional Study of the Effect of Early Slip Activity on Fatigue Crack Initiation in a Near-α Titanium Alloy

Social Science Research Network, 2021
During service of gas turbine engines, high cycle fatigue of titanium is a leading cause of component failure highlighting the need for better understanding of the crack initiation mechanism to predict initiation sites.
Cong-hui Liu, R. Thomas, T. Sun, J. Donoghue, Xun Zhang, Tim L. Burnett, J. Quinta da Fonseca, M. Preuss   +7 more
semanticscholar   +1 more source

Crack Initiation in Viscoelastic Materials [PDF]

Physical Review Letters, 2018
In viscoelastic materials, individually short-lived bonds collectively result in a mechanical resistance which is long-lived but finite, as ultimately cracks appear. Here we provide a microscopic mechanism by which cracks emerge from the nonlinear local bond dynamics.
Yuval Mulla, Giorgio Oliveri, Johannes T. B. Overvelde, Gijsje H. Koenderink   +3 more
openaire   +3 more sources

Effects of laser shock peening on the mechanisms of fatigue short crack initiation and propagation of AA7075-T651

, 2021
A laser shock peening (LSP) treatment was performed on AA7075-T651 for maximum fatigue improvement. Surface and microstructural characterisation techniques (micro-hardness, SEM-EBSD, contact-profilometry) showed LSP surface modification was limited, and ...
A. G. Sanchez, C. You, M. Leering, D. Glaser, D. Furfari, M. Fitzpatrick, J. Wharton, P. Reed   +7 more
semanticscholar   +1 more source

Gaps, challenges and possible solution for prediction of wheel–rail rolling contact fatigue crack initiation

Railway Engineering Science, 2023
The prediction of wheel/rail rolling contact fatigue (RCF) crack initiation during railway operations is an important task. Since RCF crack evolution is influenced by many factors, its prediction process is complex.
Shuyue Zhang, Qiyue Liu, Maksym Spiryagin, Qing Wu, Haohao Ding, Zefeng Wen, Wenjian Wang   +6 more
doaj   +1 more source

Crack Initiation in Brittle Materials [PDF]

Archive for Rational Mechanics and Analysis, 2007
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Antonin Chambolle, Alessandro Giacomini, PONSIGLIONE, Marcello   +2 more
openaire   +5 more sources

Characteristic and mechanism of crack initiation and early growth of an additively manufactured Ti-6Al-4V in very high cycle fatigue regime

, 2021
In this paper, very high cycle fatigue (VHCF) behavior of an additively manufactured (AM) Ti-6Al-4V by selective laser melting process and post-heat treated by hot-isostatic pressing is investigated by ultrasonic frequency fatigue test and rotating ...
Chengqi Sun, Wei-Ming Chi, Wenjing Wang, Yan Duan   +3 more
semanticscholar   +1 more source

Crack initiation behavior and fatigue performance up to very-high-cycle regime of AlSi10Mg fabricated by selective laser melting with two powder sizes

, 2021
The high-cycle and very-high-cycle fatigue (VHCF) behavior of AlSi10Mg specimens manufactured by selective laser melting with different printing powder sizes was investigated. The specimens with 20 μm powder size contained more defects than those with 50 
Z. Jian, G. Qian, D. Paolino, A. Tridello, F. Berto, Y.S. Hong   +5 more
semanticscholar   +1 more source