Results 51 to 60 of about 12,713 (195)

Simple models of the hydrofracture process [PDF]

, 2015
Hydrofracturing to recover natural gas and oil relies on the creation of a fracture network with pressurized water. We analyze the creation of the network in two ways.
Chen, Chih Hung, Marder, M., Patzek, T.
core   +1 more source

On the Use of Approximation Methods for Microcrack Shielding Problems [PDF]

, 1992
There is experimental evidence that stress-induced microcracking near a macrocrack tip enhances the fracture toughness of brittle materials. In considering the interaction of the macrocrack with multiple microcracks using a discrete model, it is ...
Cai, H., Faber, K. T.
core   +1 more source

Theoretical framework for predicting solute concentrations and solute-induced stresses in finite volumes with arbitrary elastic fields

Materials Theory, 2020
A theoretical model for computing the interstitial solute concentration and the interstitial solute-induced stress field in a three-dimensional finite medium with any arbitrary elastic fields was developed.
Yejun Gu, Jaafar A. El-Awady
doaj   +1 more source

Improvement of fatigue resistance of epoxy composite with microencapsulated epoxy-SbF5 self-healing system

eXPRESS Polymer Letters, 2017
Rapid retardation and arresting of fatigue crack are successfully realized in the epoxy composite containing microencapsulated epoxy and ethanol solution of antimony pentafluoride-ethanol complex (SbF5·HOC2H5/HOC2H5).
X. J. Ye, Y. Zhu, Y. C. Yuan, Y. X. Song, G. C. Yang, M. Z. Rong, M. Q. Zhang   +6 more
doaj   +1 more source

Numerical Investigation on Fracture Initiation Properties of Interface Crack in Dissimilar Steel Welded Joints

Chinese Journal of Mechanical Engineering, 2020
Fracture toughness property is of significant importance when evaluating structural safety. The current research of fracture toughness mainly focused on crack in homogeneous material and experimental results.
Longfei Zhao, Chendong Shao, Yasuhito Takashima, Fumiyoshi Minami, Fenggui Lu   +4 more
doaj   +1 more source

Crack path selection at the interface of wrought and wire+arc additive manufactured Ti–6Al–4V [PDF]

, 2016
Crack propagation deviation tendency in specimens containing an interface between wrought alloy substrate and Wire + Arc Additive Manufacture (WAAM) built Ti–6Al–4V is investigated from the viewpoints of microstructure, residual stress and bi-material ...
Addison, Antonysamy, Antonysamy, ASTM, Baufeld, Baufeld, Brandl, Brandl, Colegrove, Dahlin, Dattoma, Ding, Edwards, Edwards, Edwards, Evans, Fan, Frazier, Hills, Irwin, Kelly, Leuders, Lorant, Martina, Mok, Nègre, Paradowska, Peters, Pippan, Prime, Prime, Rangaswamy, Schroeder, Taminger, Van Hooreweder, Wang, Wang, Zhang, Zhang, Zhu   +39 more
core   +3 more sources

Stress intensity factor for multiple inclined or curved cracks problem in circular positions in plane elasticity [PDF]

, 2017
The problems of multiple inclined or curved cracks in circular positions is treated by using the hypersingular integral equation method. The cracks center are placed at the edge of a virtual circle with radius R.
Nik Long N. M. A., Noda N. A., Rafar R. A., Senu N.   +3 more
core   +2 more sources

The brittle-to-ductile transition in cold-rolled tungsten sheets: Contributions of grain and subgrain boundaries to the enhanced ductility after pre-deformation

Nuclear Materials and Energy, 2020
One of the key demands on tungsten (W) as designated plasma-facing material (PFM) is the capability to fulfill a structural function. Since W has refused ductilization strategies by alloying alone, the production of W materials with enhanced ductility ...
Carsten Bonnekoh, Philipp Lied, Stefan Zaefferer, Ute Jäntsch, Andreas Hoffmann, Jens Reiser, Michael Rieth   +6 more
doaj   +1 more source

Crack-Resistance Behavior of an Encapsulated, Healing Agent Embedded Buffer Layer on Self-Healing Thermal Barrier Coatings [PDF]

, 2019
In this work, a novel thermal barrier coating (TBC) system is proposed that embeds silicon particles in coating as a crack-healing agent. The healing agent is encapsulated to avoid unintended reactions and premature oxidation.
Choi, Baig-Gyu, Jung, Yeon-Gil, Kim, In-Soo, Lyu, Guanlin, Paik, Ungyu, Song, Dowon, Song, Taeseup, Zhang, Jing   +7 more
core   +2 more sources

Evaluation of the Mechanical Properties and Fatigue Resistance of the ZrO₂CeYAl₂O₃ Composite

Ceramics
This work aimed to evaluate the fatigue limit of the zirconia ceramic composite stabilized with yttria and ceria reinforced with alumina platelets (ZrO2CeYAl2O3) and characterize the mechanical properties of sintered specimens.
Marcio Paulo de Araújo Mafra, Nélio Silva Júnior, Claudinei dos Santos, Jorge Luiz de Almeida Ferreira, José Alexander Araújo, Cosme Roberto Moreira da Silva   +5 more
doaj   +1 more source