Results 71 to 80 of about 924,080 (195)

Non-axisymmetric Bifurcation Analysis in a Hollow Circular Cylinder of a Non-coaxial Cam-clay Model [PDF]

, 1998
This paper examines the diffuse bifurcation mode of a hollow circular cylinder specimen consisting of a non-coaxial Cam-clay model. The specimen undergoes a non-axisymmetric deformation by a prescribed velocity with no friction on the ends and a constant
66553, 90135541, 矢富, 盟祥, 1331, 志比, 利秀, 60311792, 9781   +6 more
core   +1 more source

Saussurea × media (Asteraceae), a new natural hybrid between S. parviflora and S. controversa

Nordic Journal of Botany, EarlyView.
Saussurea × media Yusupovsky and E.Pjak (Asteraceae), a new nothospecies from the Altai‐Sayan Mountains, is described and illustrated. In this study, we sequenced the internal transcribed spacer of nuclear ribosomal DNA and the chloroplast intergenic spacers rsp16‐trnQ and ycf4‐cemA to verify the hypothesis of hybridization between Saussurea parviflora
Daniil V. Yusupovsky, Elizaveta A. Pyak
wiley   +1 more source

Near-wellbore laboratory simulation system to evaluate chemical sand consolidation with Epoxy/g-C3N4-NS nanofluid: an experimental and simulation study

Journal of Petroleum Exploration and Production Technology
In loose sandstone reservoirs, sand enters the wellbore along with the production fluid. Sand production causes numerous problems, such as the erosion of downhole, wellhead, and surface equipment, ultimately leading to a decline in production.
Hamed Nejati, Ehsan Khamehchi, Ali Ashraf Derakhshan, Saeed Shad   +3 more
doaj   +1 more source

Impact of Fiber Treatments on the Properties and Aging Behavior of a Bio‐Composite Characterized From Nano‐ to Macro‐Scale

Polymer Composites, EarlyView.
From Posidonia oceanica seagrass fibers to sustainable bio‐composites: the role of alkaline treatment in composite performance and durability. ABSTRACT The valorization of the abundant marine residue Posidonia oceanica (PO) fibers, as a filler in a bio‐based epoxy matrix was investigated.
Mahamat Saleh Elhadj Yacoub, Lénaïk Belec, Armand Fahs, Sophie Berlioz, Jean‐François Chailan   +4 more
wiley   +1 more source

In Situ Curing‐Enabled 3D Printing of Continuous Fiber‐Reinforced Thermosetting Composites

Journal of Polymer Science, EarlyView.
In situ curing‐enabled the 3D printing of continuous fiber/thermoset composites, which were reviewed. Particularly, four types of in situ curing, were discussed, including Radiation‐induced curing, photothermal curing, electrothermal curing, and frontal polymerization. AI‐integrated printing was also analyzed.
Xiaofei Wu, Harrison Hayworth, Shiren Wang   +2 more
wiley   +1 more source

Multi‐State Resistance in Microtubule‐Templated Gold Nanowires

Small, EarlyView.
The scaling limits of CMOS transistors require alternative, dynamically reconfigurable nanoscale devices. This study demonstrates the multi‐state resistance in pure gold nanowires templated by microtubules. Continuous nanowires with local inhomogeneities enable electromigration‐driven, multistate resistance modulation under voltage pulses, while ...
Borja Rodriguez‐Barea, Brenda Palestina Romero, Charlotte Kielar, René Hübner, Stefan Diez, Artur Erbe   +5 more
wiley   +1 more source

Fatigue Strength in Additive Toolmaking: A Study of Metal Binder Jetting and Electron Beam Melting for Processing Carbide‐Rich Cold‐Work Tool Steels

steel research international, EarlyView.
Focusing on the critical tap hole region of the blast furnace, this work examines binder characteristics, prepares tap hole clay with different formulations, and evaluates their physical properties. The findings confirm the advantages of composite binders and offer a new binder option for tap hole clay.
Frederik Tegeder, Lennart Mirko Scholl, Sandra Wieland, Christian Weck, Marie Franke‐Jurisch, Alexander Bezold, Thomas Weißgärber, Christoph Broeckmann   +7 more
wiley   +1 more source

Toward the Application of Multiaxial Failure Criteria: Mean Stress Sensitivity of Carbide‐Rich, High‐Alloy PM‐HIP Tool Steels Under Axial and Torsional Cyclic Loading

steel research international, EarlyView.
This study quantifies axial and torsional long‐life fatigue (LLF) behavior of three carbide‐rich PM‐HIP tool steels, correlating LLF strength with intrinsic defect size and cleanliness, thereby extracting material‐specific mean stress sensitivities and Haigh diagrams.
Lennart Mirko Scholl, Frederik Tegeder, Tobias Hajeck, Alexander Bezold, Christoph Broeckmann   +4 more
wiley   +1 more source

Multi‐Scale Mechanical Behavior of Additive‐Manufactured 316L Stainless Steel Processed by Severe Plastic Deformation

steel research international, EarlyView.
The multi‐scale mechanical behavior of additive‐manufactured 316L stainless steel processed by directed energy deposition and high‐pressure torsion is explored. The influence of torsional strain on strength and microstructural evolution is revealed, indicating progressive grain refinement in the ultrafine regime, reaching strength levels nearing 1800 ...
M. Farhan Raza, Guney Guven Yapici
wiley   +1 more source

Deformation and strength of grouted sleeve connectors in pre‐fabricated concrete structures: Mechanisms and analytical modeling

Structural Concrete, EarlyView.
Abstract Grouted sleeve connectors (GSCs) are widely used in precast/prefabricated concrete structures. To ensure force transfer, connectors are often overdesigned in length. This practice has an unintended consequence of reducing the plastic deformation capacity of the connection region and hence the displacement ductility of the precast structure as ...
Hongning Ye, Yong Lu
wiley   +1 more source