Results 51 to 60 of about 34,410 (268)

Creep‐Induced Microstructural Evolution in an A2‐B2 Superalloy

Advanced Engineering Materials, EarlyView.
A 27.3Ta‐27.3Mo‐27.3Ti‐8Cr‐10Al (at.%) refractory high‐entropy alloy with precipitation‐strengthened A2‐B2 microstructure was studied by creep tests at 1030°C, which demonstrate a transition in deformation mechanisms in the range of 100–150 MPa applied stress. This is associated with changes in dislocation–precipitate interactions. Relevant deformation
Liu Yang, Aparajita Pramanik, Sandipan Sen, Shubhashis Dixit, Marcel Muench, R. J. Vikram, Daniel Schliephake, Yolita M. Eggeler, Ankur Chauhan, Martin Heilmaier, Alexander Kauffmann   +10 more
wiley   +1 more source

Shear-Compression Failure Condition of Key Strata Under Elastic Support During Periodic Breakage

Applied Sciences
The shear-compression failure of key strata leads to stair-step collapse and severe mine pressure, posing significant safety risks in coal mines. Existing theories fail to account for the boundary conditions and breaking sizes of key strata, making ...
Hongjie Liu, Mingxian Peng, Yang Tai, Jun Ding   +3 more
doaj   +1 more source

Characteristics of direct shear test for plain concrete joint with rubber cushion

矿业科学学报, 2018
The contact friction between the segments and the joints of shield segments plays a crucial role in the stability of the shield segment.In order to analyze the contact friction among tunnel segments,direct shear tests were carried out on concrete ...
Zhang Zhenyu, Li Haojie, Jia Changheng, Feng Jili   +3 more
doaj   +1 more source

Low Cycle Repetitive Loading of Ti‐6Al‐4V‐Epoxy Composite Lattice Structures for Enhanced Energy Dissipation and Damage Tolerance

Advanced Engineering Materials, EarlyView.
Composite Ti–6Al–4V–epoxy lattice structures are additively manufactured and epoxy infiltrated for cyclic loading. At low lattice volume fractions, hybridization produces synergistic gains in stiffness and energy dissipation. At higher volume fractions, synergy diminishes, although composites still exceed metallic lattices in specific energy ...
Joey Tallon, Jordan Noronha, Justin Dirrenberger, Andrey Molotnikov   +3 more
wiley   +1 more source

Study on Shear Strength of Undisturbed Expansive Soil of Middle Route of South-to-North Water Diversion Project

工程科学与技术, 2018
The shear strength of expansive soil is not only influenced by the water content, dry density, vertical stress, wetting-drying cycle, crack and other factors, but also influenced by the clay content and plasticity index.
Fuchu DAI, Wenping DONG, Zhiquan HUANG, Xiaoli ZHANG, Anming WANG, Shichao CAO   +5 more
doaj  

Investigation of the Dowel and Friction Forces in Fiber Reinforced Ultra High Performance Concrete Beams [PDF]

Engineering and Technology Journal, 2012
The phenomenon of dowel action as a shear transfer mechanism across cracks has long been recognized as an important component of the overall shear resistance capacity of reinforced concrete beams.
Kaiss F. Sarsam, Maha M. S. Ridha, Zainab H. Mahdi   +2 more
doaj   +1 more source

Influence of Geometric Design on Mechanical Performance of Auxetic Metastructure

Advanced Engineering Materials, EarlyView.
Strategic geometric reinforcement transforms auxetic performance. This study evaluates 3D‐printed arrowhead metastructures, revealing that a modified design with local ring reinforcement suppresses premature failure to achieve superior energy absorption and structural efficiency.
Muhammad Gulzari, Supharoek Sornsomrit, Muhammad Ayaz Akbar, Stephan Rudykh   +3 more
wiley   +1 more source

Experimental Study on Shear Behavior of Interface between Different Soil Materials and Concrete under Variable Normal Stress

Applied Sciences, 2022
At present, the interface shear test is mainly used to evaluate the anti-sliding performance of the new foundation base. However, the traditional interface shear test has certain limitations in simulating the load change during the construction process ...
Hongyuan Liu, Mingxing Zhu, Xiaojuan Li, Guoliang Dai, Qian Yin, Jing Liu, Chen Ling   +6 more
doaj   +1 more source

Precipitation Simulations of the O‐Phase in Ti2AlNb Alloys Processed by Laser Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Simulated and experimental evolution of the O‐phase volume fraction during postprocessing of a Ti‐21Al‐25Nb (at.%) alloy processed by laser powder bed fusion. With results of sensitivity to input parameters from a thorough and quantified analysis, the interfacial energy matrix/precipitate is the most relevant input parameter for the simulation of the O‐
Silvana Tumminello, Joachim Gussone, Suzana G. Fries, Marcus Rackel, Andreas Stark, Norbert Schell, Jan Haubrich, Guillermo Requena   +7 more
wiley   +1 more source

Effects of Relative Roughness and Particle Size on the Interface Behavior of Concrete Suction Caisson Foundation for Offshore Wind Turbines

Energies, 2020
The interface behavior between a caisson and the surrounding soil plays an important role in the installation of suction caissons as foundations for offshore wind turbines.
Wang-chun Zhang, Hao Jing, Hai-lei Kou
doaj   +1 more source