Results 141 to 150 of about 1,723,107 (335)

The 3500 Fracturing Pump Bearings’ Deformation Effects on the Rack Performance

Shiyou jixie, 2016
The fracturing hydraulic end loads and power end dynamic characteristics of the 3500 fracturing pump rack have been analyzed.Based on the loads on the rack under dangerous conditions,the rack bearing block torus’s load,the maximum radial deformation and ...
Jiang Faguang, He Huanqing, Li Feng, Zhuo Changrong, Li Zhenli   +4 more
doaj  

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

Four‐Point Bending Tests at High Temperatures on Commercial MgO‐C Refractory Bricks with and Without Recyclate Considering Different Carbon Contents

Advanced Engineering Materials, EarlyView.
Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm, Lukas Knöchel, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +5 more
wiley   +1 more source

Experimental Study on Seismic Performance of Flexural-shear Replaceable Energy Dissipators in the Beam-column Joint

工程科学与技术
A high-strength steel beam-column joint with flexural-shear type replaceable components is proposed to solve the problems of damper buckling under compression and unstable energy dissipation capacity under certain practical working conditions. This joint
Gang LIANG, Shumin LI, Jianan YANG, Yunhe LIU, Junlong LU, Qing TIAN   +5 more
doaj  

Engineered Mycelial Scaffolds With Tunable Ultraviolet Protection, Wettability, Thermal Stability, and Spatial Mechanics

Advanced Engineering Materials, EarlyView.
Fungal mycelia grown into biodegradable scaffolds and infused with titania nanoparticles show enhanced ultraviolet shielding, thermal protection, and surface nonwettability. Properties were tuned by drying methods, revealing structure–function relationships.
Juwon S. Afolayan, Xin Zhang, Carole C. Perry   +2 more
wiley   +1 more source

Pyramidal Structures on Yttria‐Stabilized Zirconia after High Temperature Exposure at 1500°C: New Features on an Old Material

Advanced Engineering Materials, EarlyView.
New features on yttria‐stabilized zirconia after exposure at 1500°C: Newly discovered pyramidal structures on an old material. After exposure at 1550°C on the cross section of YSZ new features, namely pyramidal structures are discovered. These structures grow with time, increase in numbers, appear as singularities, are often arranged in strings, and ...
Doris Sebold, Dylan Jennings, Robert Vaßen   +2 more
wiley   +1 more source

Expert consensus document on arterial stiffness: methodological issues and clinical applications.

European Heart Journal, 2006
S. Laurent, J. Cockcroft, L. V. Van Bortel, P. Boutouyrie, C. Giannattasio, D. Hayoz, B. Pannier, C. Vlachopoulos, I. Wilkinson, H. Struijker-Boudier   +9 more
semanticscholar   +1 more source

Surface Tension Measurement of Ti‐6Al‐4V by Falling Droplet Method in Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
In this article, the temperature‐dependent surface tension of free falling, oscillating Ti‐6Al‐4V droplets is investigated in both argon and monosilane doped, oxygen‐free atmosphere. Droplet temperature and oscillation are captured with one single high‐speed camera, and the surface tension is calculated with Rayleigh's formula.
Johannes May, Finn‐Lennard Janthur, Lena Kreie, Michael Müller, Sarah Seffer, Nick Schwarz, Jörg Hermsdorf, Thomas Hassel, Stefan Kaierle, Ludger Overmeyer   +9 more
wiley   +1 more source

Models of Hybrid Springs for Ergonomic Seats and Mattresses

Drvna Industrija, 2013
An ergonomic seat or mattress has to provide optimal and uniform support for the body of a man or a woman with similar or slightly differing size centiles. It is a common opinion that spring systems in upholstered furniture are much more durable and more
Jerzy Smardzewski
doaj  

Prediction of cardiovascular events and all-cause mortality with arterial stiffness: a systematic review and meta-analysis.

Journal of the American College of Cardiology, 2010
C. Vlachopoulos, K. Aznaouridis, C. Stefanadis   +2 more
semanticscholar   +1 more source