Results 131 to 140 of about 21,765 (305)

Enhancing Strength and Electrical Conductivity in Al–Zr–Sc Conductor Alloys Through Sn and Sr Microalloying and Two‐Step Aging Treatment

Advanced Engineering Materials, EarlyView.
Trace additions of Sn and Sr combined with a two‐step aging treatment are shown to enhance the microstructure and performance of Al–Zr–Sc conductor alloys. Strength and electrical conductivity increase concurrently through accelerated precipitation of fine Al3(Sc, Zr) precipitates and improved dislocation resistance, offering a cost‐effective pathway ...
Quan Shao, Emad M. Elgallad, Alexandre Maltais, X.‐Grant Chen   +3 more
wiley   +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

Application and Optimization of SRV Fracturing Technology for Casing Deformation Section of Shale Gas Well

Shiyou jixie, 2017
The casing deformation can lead to failed multistage fracturing using pumped bridge plug in the lower well section, which could affect seriously the effect of the multistage SRV fracturing of the shale gas horizontal well.
Yang Yi, Liu Junchen, Zeng Bo, Yang Xinrui, Huang Haoyong   +4 more
doaj  

Study and Application of Cement Slurry for Mitigating Casing Deformation in Shale Gas Well Fracturing

Zuanjingye yu wanjingye
Shale gas reservoirs in the Sichuan-Chongqing area have complex geological structures and well-developed natural fractures, which always result in formation slip and casing deformation in long horizontal section well tight cluster fracturing operation. A
Minhua CHEN, Zhaocai YU, Chenyang ZHOU, Tian’an DENG, Shunping ZHANG, Bo LIU, Xueli GUO   +6 more
doaj   +1 more source

Global dynamic modeling of a transmission system [PDF]

The work performed on global dynamic simulation and noise correlation of gear transmission systems at the University of Akron is outlined. The objective is to develop a comprehensive procedure to simulate the dynamics of the gear transmission system ...
Choy, F. K., Qian, W.
core   +1 more source

Near‐Field Electrospinning Micro‐Printhead Achieves Precise Control of Nanofiber Deposition

Advanced Engineering Materials, EarlyView.
A micro‐printhead for near‐field electrospinning enables reproducible deposition of polymer nanofibers with diameters below 50 nm. Systematic parameter studies uncover the mechanisms linking operating conditions to fiber morphology, paving the way for precise and low‐cost nanoscale 3D manufacturing.As a high‐resolution, cost‐effective, and rapid ...
Han Xu, Dario Mager, Jan G. Korvink
wiley   +1 more source

Containment of composite fan blades [PDF]

The development of containment concepts for use with large composite fan blades, taking into account the frangible nature of composite blades is considered.
Coppa, A. P., Stotler, C. L.
core   +1 more source

Phenomenological and Physically Based Modeling of Flow Stress and Strengthening Mechanism of Inconel 718

Advanced Engineering Materials, EarlyView.
Nickel‐based alloys are widely used in high‐temperature applications due to their excellent mechanical strength and oxidation resistance. However, properties such as high‐temperature strength and pronounced work‐hardening make them difficult to machine.
Soheil Rooein, Oliver Schenk, Christoph Broeckmann   +2 more
wiley   +1 more source

The Flattening Deformation of the Curved Section Casing and Its Influence on the Collapse Strength

Shiyou jixie, 2019
Due to the configuration of the wellbore, the plastic bend of casing will occurred at the curved well section, and the collapse strength of casing will be reduced.
Cao Yinping, Dou Yihua, Li Mingfei, Suo Hongjuan   +3 more
doaj  

Structural analysis of a bolted joint concept for the space shuttle's solid rocket motor casing [PDF]

The Space Shuttle Challenger accident is thought to have been caused by the failure of one of the tang-clevis joints joining together the casing segments of the Solid Rocket Motors (SRM).
Lindell, Michael C., Stalnaker, Winifred A.   +1 more
core   +1 more source