Results 81 to 90 of about 390,476 (288)

Influence of an Argon/Silane Atmosphere on the Temperature of a Thermal Plasma

Advanced Engineering Materials, EarlyView.
The influence of a silane‐doped argon atmosphere on the chemical composition and temperature of a thermal nontransferring argon plasma is investigated using optical emission spectroscopy. As a result of the high amount of free electrons resulting from the stepwise ionization and dissociation of the silane molecule, even a silane addition of 0.01 vol ...
Lena Kreie, David Kramer, Thomas Scheithauer, Hans Jürgen Maier, Thomas Hassel   +4 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

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

GROUND VIBRATION DUE TO BLASTING IN DAM AND HYDROPOWER PROJECTS

Rudarsko-geološko-naftni Zbornik, 2020
In this study, the safe charge per delay (kg) of explosives and Peak Particle Velocity (PPV, mm/s) are recorded for 140 blast events at various distances which relates to the dam and hydropower projects of Karoun III, Masjed – Soleiman, and Siah – Bisheh
Hojjat Hosseinzadeh Gharehgheshlag, Aref Alipour   +1 more
doaj   +1 more source

Bounding Peak Ground Velocities for Seismic Events at Yucca Mountain, Nevada

, 2004
Earthquake ground motions have been assessed using a probabilistic seismic hazard analysis (PSHA) of the proposed repository for spent nuclear fuel and high-level radioactive wastes at Yucca Mountain, Nevada. To meet the applicable regulations, consideration must be given to ground motions that have probabilities of exceedance as low as 10{sup -8}/yr ...
King, J., Coppersmith, K., Quittmeyer, R.   +2 more
openaire   +3 more sources

Effect of Laser Deoxidation on Adhesive‐Bonded Aluminum in an Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
This study investigates laser ablation of aluminum under oxygen‐free conditions. The goal is to produce oxide‐free substrates that enable improved adhesive bonding with epoxy. Optimized laser parameters (90% overlap, 300 µJ) combined with oxide‐free substrates result in the highest tensile strength of the adhesive bond.
Sandra Gerland, Finn‐Lennard Janthur, Sarah Seffer, Jörg Hermsdorf, Ludger Overmeyer, Annika Raatz   +5 more
wiley   +1 more source

Pointing control for the SPIDER balloon-borne telescope

, 2014
We present the technology and control methods developed for the pointing system of the SPIDER experiment. SPIDER is a balloon-borne polarimeter designed to detect the imprint of primordial gravitational waves in the polarization of the Cosmic Microwave ...
Ade, Peter A. R., Amiri, Mandana, Benton, Steven J., Bock, Jamie J., Bond, J. Richard, Bryan, Sean A., Chiang, H. Cynthia, Contaldi, Carlo R., Crill, Brendan P., Doré, Olivier P., Farhang, Marzieh, Filippini, Jeffrey P., Fissel, Laura M., Fraisse, Aurelien A., Gambrel, Anne E., Gandilo, Natalie N., Golwala, Sunil R., Gudmundsson, Jon E., Halpern, Mark, Hasselfield, Matthew, Hilton, Gene C., Holmes, Warren A., Hristov, Viktor V., Irwin, Kent D., Jones, William C., Kermish, Zigmund D., Kuo, Chao-Lin, MacTavish, Carolyn J., Mason, Peter V., Megerian, Krikor G., Moncelsi, Lorenzo, Morford, Tracy A., Nagy, Johanna M., Netterfield, C. Barth, O'Brient, Roger, Rahlin, Alexandra S., Reintsema, Carl D., Ruhl, John E., Runyan, Marcus C., Shariff, Jamil A., Soler, Juan D., Trangsrud, Amy, Tucker, Carole E., Tucker, Rebecca S., Turner, Anthony D., Weber, Alexis C., Wiebe, Donald V., Young, Edward Y.   +47 more
core   +1 more source

Thermophysical Properties of the Desulphurization Slags With Various CaS and CaO/Al2O3 Ratio

Advanced Engineering Materials, EarlyView.
This article investigates how CaS content and the CaO/Al2O3 ratio influence the thermophysical properties of desulphurization slags. Using experimental measurements and thermodynamic simulations, this study reveals complex effects on viscosity, surface tension, and density, providing new insight into slag structure and phase behavior under ...
Eldar Salpagarov, Matheus Roberto Bellé, Anton Yehorov, Julia Richter, Olena Volkova   +4 more
wiley   +1 more source

Onsite early prediction of peak amplitudes of ground motion using multi-scale STFT spectrogram

Earth, Planets and Space
Onsite earthquake early warning (EEW) techniques, relying on single-station seismic wave measurements, have demonstrated efficacy in mitigating damage caused by destructive earthquakes. Traditionally, these methods leverage diverse P-wave attributes from
Ting-Yu Hsu, Kuan-Lin Liu
doaj   +1 more source

Mechanism of Collapse, Sensitivity to Ground Motion Features, and Rapid Estimation of the Response of Tall Steel Moment Frame Buildings to Earthquake Excitation [PDF]

, 2011
This study explores the behavior of two tall steel moment frame buildings and their variants under strong earthquake ground shaking through parametric analysis using idealized ground motion waveforms.
Krishnan, Swaminathan, Muto, Matthew
core