Results 121 to 130 of about 265,284 (302)

Margin of seimic design for mechanical structures with gaps through experimental investigation

Nihon Kikai Gakkai ronbunshu
Seismic design for equipment and piping systems typically conducts linear evaluations using maximum response accelerations or response spectra of structures. However, gaps exist between structures and support structures in these systems, which can affect
Yusuke MINAKAWA, Tadashi IIJIMA, Naotomo MARUYAMA   +2 more
doaj   +1 more source

Combining particle acceleration and coronal heating via data-constrained calculations of nanoflares in coronal loops

, 2013
We model nanoflare heating of extrapolated active-region coronal loops via the acceleration of electrons and protons in Harris-type current sheets. The kinetic energy of the accelerated particles is estimated using semi-analytical and test-particle ...
Anastasiadis, A., Efthymiopoulos, C., Georgoulis, M. K., Gontikakis, C., Patsourakos, S.   +4 more
core   +1 more source

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

Advanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti, Finn‐Lennard Janthur, Selina Raumel, Sascha Jan Zimmermann, Sarah Seffer, René Gustus, Sebastian Herbst, Marc C. Wurz, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Florian Nürnberger   +11 more
wiley   +1 more source

Multi-wavelength analysis of high energy electrons in solar flares: a case study of August 20, 2002 flare

, 2005
A multi-wavelength spatial and temporal analysis of solar high energy electrons is conducted using the August 20, 2002 flare of an unusually flat (gamma=1.8) hard X-ray spectrum.
A. Asai, A. Czaykowska, A. Klassen, A. Veronig, B. R. Dennis, B. R. Dennis, Brian R. Dennis, Ch. M. Johns, D. Alexander, E. Haug, E. P. Kontar, E. Rieger, Eduard P. Kontar, F. Fárník, G. D. Holman, G. D. Holman, G. J. Hurford, G. Trottet, H. Wang, J. C. Brown, J. C. Brown, J. C. Brown, J. Heyvaerts, Jana Kašparová, L. Fletcher, M. E. Machado, M. J. Aschwanden, M. Karlický, M. Lampton, M. Piana, M. Poquerusse, Marian KarlickÝ, N. Nitta, P. Démoulin, P. Heinzel, P. J. Cargill, R. A. Schwartz, R. C. Alexander, R. C. Canfield, R. C. Puetter, R. P. Lin, R. P. Lin, Richard A. Schwartz, S. G. Benka, T. Bai, T. R. Metcalf, V. N. Melnik, Y. Uchida   +47 more
core   +1 more source

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

Statistical Characteristics of Soil Dynamics in the Beijing-Tianjin-Hebei Region and Their Impacts on Structural Seismic Analyses

Buildings
The dynamic shear modulus ratios and dynamic damping ratios of soil are critical parameters for soil seismic response analyses and seismic safety evaluation of engineering sites.
Peixuan Liu, Xiaojun Li, Yushi Wang, Lin Wang, Zhuo Song   +4 more
doaj   +1 more source

A non-separable stochastic model for pulse-like ground motions [PDF]

, 2013
A phenomenological non-separable non-stationary stochastic model is proposed to represent near-fault pulse-like ground motions (PLGMs) by means of a parametrically defined evolutionary power spectrum (EPSD). Numerical data pertaining to ensembles of EPSD
Giaralis, A., Lungu, A.
core  

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

Advanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios, Anthony Gonzalez, Aleksander Aleman, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal   +5 more
wiley   +1 more source

Tailored Hierarchical Porous Copper Architectures via Three Dimensional Printing and Pressure‐less Sintering for Next‐Generation Lithium‐Metal Batteries

Advanced Engineering Materials, EarlyView.
A hierarchical porous copper current collector is fabricated via three‐dimensional printing combined with pressureless sintering to stabilize lithium metal anodes. The interconnected architecture lowers local current density, guides uniform Li deposition within pores, and suppresses dendrite growth.
Alok Kumar Mishra, Mukul Shukla
wiley   +1 more source

A Correction Method for the Underwater Shock Signals of Floating Shock Platforms Based on a Combination of FFT and Low-Frequency Oscillator

Shock and Vibration, 2019
Accurate shock loading is required for evaluating and analyzing the shock resistance of warship equipment. However, measured shock acceleration signals contain trend term errors, which cause serious low-frequency distortion of the shock response spectrum
Peng Wang, Ming Yan, Lei Zhang, Mingyuan Zhang   +3 more
doaj   +1 more source