Fatigue Behavior of Additively Manufactured IN718 with Columnar Grains
Sign Up to like & getrecommendations! Published in 2020 at "Advanced Engineering Materials"
DOI: 10.1002/adem.202001031
Abstract: Fatigue failure of polycrystalline materials is often dominated by crack initiation processes, which are strongly influenced by salient features existing in the microstructure. Herein, a crystal plasticity framework based on the finite element method is… read more here.
Keywords: fatigue behavior; crack nucleation; columnar; fatigue crack ... See more keywords
Identifying Accurate Crack Initiation and Propagation Thresholds in Siliceous Siltstone and Limestone
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DOI: 10.1007/s00603-020-02277-y
Abstract: Deep buried tunnels often suffer brittle instability and failure during the excavation process under high geological stress conditions (Liu et al. 2018). During this process, the surrounding rocks partially begin to break with crack initiation… read more here.
Keywords: crack initiation; stress; failure; growth ... See more keywords
Multiscale crystal-plasticity phase field and extended finite element methods for fatigue crack initiation and propagation modeling
Sign Up to like & getrecommendations! Published in 2019 at "International Journal of Fracture"
DOI: 10.1007/s10704-018-00339-5
Abstract: This paper presents a physics-based prediction of crack initiation at the microstructure level using the phase field (PF) model without finite element discretization, coupled with an efficient and accurate modeling of crack propagation at macro-scale… read more here.
Keywords: finite element; model; crack initiation; crack ... See more keywords
Predicting Crack Initiation of Solder Joints with Varying Sizes Under Bending
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Electronic Materials"
DOI: 10.1007/s11664-019-06989-y
Abstract: The critical strain energy release rate for crack initiation, Jci, was measured under mode I loading for SAC305 solder joints between two copper substrates. Fracture tests were performed using double cantilever beam specimens at a… read more here.
Keywords: solder joints; crack initiation; predicting crack; crack ... See more keywords
Investigation of fatigue crack initiation from a non-metallic inclusion via high energy x-ray diffraction microscopy
Sign Up to like & getrecommendations! Published in 2017 at "Acta Materialia"
DOI: 10.1016/j.actamat.2017.07.027
Abstract: Abstract Crack initiation at inclusions is a dominant, unavoidable and life-limiting failure mechanism of important structural materials. Fatigue progresses in a complex manner to find the ‘weakest link’ in the microstructure, leading to crack nucleation.… read more here.
Keywords: stress; crack initiation; inclusion; microscopy ... See more keywords
Low-cycle fatigue crack initiation life of hull-notched plate considering short crack effect and accumulative plastic damage
Sign Up to like & getrecommendations! Published in 2017 at "Applied Ocean Research"
DOI: 10.1016/j.apor.2017.08.003
Abstract: Abstract When studying the low-cycle fatigue crack initiation life of notched plates, the effects of fatigue short crack and accumulative plastic damage in the vicinity of the notch should be considered. The low-cycle fatigue crack… read more here.
Keywords: cycle fatigue; crack initiation; low cycle; crack ... See more keywords
Impact of the initial crack volume on the intact behavior of a bonded particle model
Sign Up to like & getrecommendations! Published in 2020 at "Computers and Geotechnics"
DOI: 10.1016/j.compgeo.2020.103764
Abstract: Abstract The flat-jointed (FJ) contact model implemented in the particle flow code resolves the long-standing issue of the code producing unrealistically low ratios of uniaxial compressive strength (UCS) to direct tensile strength. Despite the improvements… read more here.
Keywords: initial crack; crack initiation; model; particle ... See more keywords
Microscale based prediction of matrix crack initiation in UD composite plies subjected to multiaxial fatigue for all stress ratios and load levels
Sign Up to like & getrecommendations! Published in 2017 at "Composites Science and Technology"
DOI: 10.1016/j.compscitech.2017.02.004
Abstract: Abstract A criterion is developed which predicts matrix fatigue crack initiation for Uni-Directional (UD) composite plies subjected to multiaxial fatigue load at all stress-ratio's: Tension-Tension, Compression-Compression and Tension-Compression. This research is based on physical observations… read more here.
Keywords: compression; initiation; crack initiation; tension ... See more keywords
Prediction of matrix crack initiation and evolution and their effect on the stiffness of laminates with off-axis plies under in-plane loading
Sign Up to like & getrecommendations! Published in 2020 at "Composites Science and Technology"
DOI: 10.1016/j.compscitech.2020.108427
Abstract: Abstract A model is described which allows the exact calculation of stresses in a cracked ply under combined state of strain. Closed form expressions for the stresses in each ply are combined in an energy… read more here.
Keywords: stiffness; ply; crack initiation; matrix crack ... See more keywords
Closed-form analysis of interlaminar crack initiation in angle-ply laminates
Sign Up to like & getrecommendations! Published in 2020 at "Composite Structures"
DOI: 10.1016/j.compstruct.2020.113060
Abstract: Abstract The layerwise discontinuous stiffness properties in composite laminates may cause highly localized, singular concentrations of interlaminar stresses. These stress singularities occur in the vicinity of free edges and may induce interfacial cracks, often referred… read more here.
Keywords: angle ply; interlaminar crack; crack initiation; ply laminates ... See more keywords
Stress corrosion crack initiation in machined type 316L austenitic stainless steel in simulated pressurized water reactor primary water
Sign Up to like & getrecommendations! Published in 2018 at "Corrosion Science"
DOI: 10.1016/j.corsci.2018.04.003
Abstract: Abstract The effect of machining on stress corrosion crack initiation of annealed Type 316L stainless steel was investigated through accelerated testing in high-temperature hydrogenated water. It was observed that stress corrosion cracks only initiated on… read more here.
Keywords: water; crack initiation; stress corrosion; crack ... See more keywords