Results 91 to 100 of about 149,202 (259)

Macroscopic fracture mechanism of coal body and evolution characteristics analysis of impact force in deep coal and gas outburst. [PDF]

Sci Rep, 2023
Ren L, Tang J, Pan Y, Zhang X, Yu H.
europepmc   +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

Experimental study on fatigue damage evolution mechanism of hard layered sandstone under cyclic loading

Yantu gongcheng xuebao
The deformation and cracking of tunnel basement surrounding rock under the disturbance of train dynamic load contain complex mechanical damage problems.
SONG Zhanping1 , CHENG Yun 1, 2, 3, YANG Tengtian 4, YANG Pengtao 5, PAN Hongwei 5
doaj   +1 more source

Impact fracture mechanism and heat deflection temperature of PLA/PEICT blends reinforced by glass fiber. [PDF]

RSC Adv, 2023
Lee JH, Park CK, Kim SH.
europepmc   +1 more source

Modeling Dislocation Cutting of γ′ Precipitates in Ni‐Base Superalloys: Linking Atomistic and Dislocation Dynamics Simulations

Advanced Engineering Materials, EarlyView.
Dislocation cutting of γ′ precipitates in Ni‐based superalloys is investigated by linking atomistic simulations with discrete dislocation dynamics. The critical cutting stress is shown to be governed by the antiphase boundary energy, while line tension effects promote edge‐preferred cutting.
Frédéric Houllé, Siwen Gao, Marc Fivel, Anxin Ma, Daria Smirnova, Sriram Anand, Arun Prakash, Julien Guénolé, Alexander Hartmaier, Erik Bitzek   +9 more
wiley   +1 more source

Effect of dislocation slip on in-situ tensile fracture of vanadium alloys after helium/self-ion irradiation

Science and Technology of Advanced Materials
Research on tensile fracture of vanadium alloys after irradiation would help evaluate their mechanical properties and service life in extreme environments of fusion reactors, thereby ensuring the safety and reliability of the materials.
Qianqian Zhang, Shaoning Jiang, Yanfen Li, Shoushuai Zhang, Pengfei Zheng, Jianghai Lin, Guangchun Xiao   +6 more
doaj   +1 more source

Effects of Bone Cross-Link Bridging on Fracture Mechanism and Surgical Outcomes in Elderly Patients with Spine Fractures. [PDF]

Asian Spine J, 2023
Furukawa M, Fujiyoshi K, Okubo T, Yanai Y, Matsubayashi K, Kato T, Kobayashi Y, Konomi T, Yato Y.   +8 more
europepmc   +1 more source

Microstructure, Thermal Transport, and Dry‐Sliding Tribology of Powder‐Metallurgy Al7075 Composites Reinforced With Sol–Gel‐Derived ZnO–rGO Hybrid Nanoparticles

Advanced Engineering Materials, EarlyView.
Sol–gel‐derived ZnO–rGO hybrid nanoparticles enable Al7075 powder‐metallurgy composites to achieve concurrent gains in hardness and thermal conductivity while markedly lowering friction and wear. The hybrid architecture couples ZnO‐based load support with rGO‐assisted lamellar sliding and heat spreading, revealing a promising route toward lightweight ...
Bunyamin Aksakal, Cevher Kursat Macit, Merve Ayık, Hakan Tutumlu   +3 more
wiley   +1 more source

Explosive Impact Crushing Characteristics of Magnetite Rock under Microwave Irradiation

工程科学与技术
为研究爆炸冲击荷载下微波辐照磁铁矿岩的宏观和微观破坏特征，本文对不同微波功率与时间辐照后的磁铁矿岩试样开展了爆炸冲击试验，通过筛分统计、分形维数计算和电镜扫描的方法，研究了相同冲击荷载下矿岩块度分布规律，并从微观角度阐述了矿岩破坏机制。结果表明：微波辐照使磁铁矿岩的温度升高是P波波速降低的主要因素。随着微波功率越高、辐照时间越长，微波总能量（功率×时间）相应增加，矿岩冲击破碎形态分别以片状块体（1.5 kW×1 min）、楔状碎块（3.0 kW×2 min）和柱状小碎块（4.5 kW×3 min）为主 ...
LIANG Weimin, CUI Laizhou, CHU Huaibao, XU Mengfei, SUN Bo, LI Haoming, CHENG Zhikai   +6 more
doaj  

The Effect of Mo Content on the Multi-Scale Martensitic Structure and Mechanical Properties of Ultra-High-Strength and -Toughness Oil Well Pipes

Metals
The study systematically investigates the effect of molybdenum (Mo) content (0.70–1.57 wt.%) on the microstructure and mechanical properties of quenched and tempered martensitic steel for ultra-high-strength and -toughness oil well pipes.
Bin Shi, Shibiao Wang, Chunling Zhang, Qingfeng Wang   +3 more
doaj   +1 more source