Results 71 to 80 of about 68,107 (316)

Edge crack growth of mortar plate specimens under uniaxial loading tests

Journal of Rock Mechanics and Geotechnical Engineering, 2019
In this paper, a compression-to-tension conversion technique is developed by applying predominant mode I loading test, using a servo-controlled compression system. The technique is applied to thin mortar plate specimens of different widths that include a
Zhenghong Huang, Shouchun Deng, Haibo Li, Hong Zuo   +3 more
doaj   +1 more source

A Workflow to Accelerate Microstructure‐Sensitive Fatigue Life Predictions

Advanced Engineering Materials, EarlyView.
This study introduces a workflow to accelerate predictions of microstructure‐sensitive fatigue life. Results from frameworks with varying levels of simplification are benchmarked against published reference results. The analysis reveals a trade‐off between accuracy and model complexity, offering researchers a practical guide for selecting the optimal ...
Luca Loiodice, Krzysztof S. Stopka, Michael D. Sangid   +2 more
wiley   +1 more source

Study of the Kalthoff–Winkler experiment using an ordinary state-based peridynamic model under low velocity impact

Advances in Mechanical Engineering, 2019
To overcome the limitation of constant Poisson’s ratio in bond-based peridynamics, an ordinary state-based peridynamic (OSB PD) model was applied to simulate dynamic crack propagation in Kalthoff–Winkler specimen subjected to a low velocity impact.
JS Guo, WC Gao
doaj   +1 more source

Influences of crystal orientations and grain boundary on crack propagation behaviour at room temperature in a polycrystalline Ni-base superalloy

Nihon Kikai Gakkai ronbunshu, 2018
Fatigue crack propagation in a polycrystalline Ni-base superalloy was experimentally investigated at room temperature. Fatigue crack propagation tests were conducted under a constant ΔK condition to clarify the effect of grains crystal orientation, grain
Mana HIGAKI, Motoki SAKAGUCHI, Masafumi MATSUNAMI, Hideaki KANEKO, Takanori KARATO, Kenta SUZUKI, Hirotsugu INOUE   +6 more
doaj   +1 more source

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

Advanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar, Dhanadeep Dutta, G. Bharat Reddy   +2 more
wiley   +1 more source

Predicting fatigue crack growth rate in a welded butt joint: The role of effective R ratio in accounting for residual stress effect [PDF]

, 2009
A simple and efficient method is presented in this paper for predicting fatigue crack growth rate in welded butt joints. Three well-known empirical crack growth laws are employed using the material constants that were obtained from the base material ...
Servetti, Guido, Zhang, X.
core   +1 more source

Effects of surface oxide layer on fatigue crack propagation properties of submicrometer-thick copper films

Nihon Kikai Gakkai ronbunshu
Fatigue failure involves fatigue crack initiation and propagation processes. In bulk metals, the fatigue crack initiation process is strongly affected by a dissimilar surface layer, while the fatigue crack propagation process is less affected.
Toshiyuki KONDO, Tomoaki MORIKUNI, Koki DATE, Kohji MINOSHIMA   +3 more
doaj   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Finite element analysis of bonded crack retarders for integral aircraft structures [PDF]

, 2009
Trends in aircraft design and manufacture are towards the reduction of manufacturing cost and structural weight while maintaining high level of safety. These reductions can be achieved by using integral structures.
Boscolo, Marco
core  

The effect of weld residual stresses and their re-distribution with crack growth during fatigue under constant amplitude loading [PDF]

, 2010
In this work the evolution of the residual stresses in a MIG-welded 2024-T3 aluminium alloy M(T) specimen during in situ fatigue crack growth at constant load amplitude has been measured with neutron diffraction.
Lin, J., Liljedahl, C. D. M., Fitzpatrick M, Edwards, L., Edwards, Lyndon, Fitzpatrick, Michael E., Zanellato, O., Fitzpatrick, M. E., Edwards L, Zanellato, Oliver, Liljedahl C, Liljedahl, C. David M., Lin J, Zanellato O   +13 more
core   +1 more source