Results 131 to 140 of about 833,078 (327)

Magnetic shielding systems to support longer-term human exploration of Mars

Frontiers in Space Technologies
Space activities are primarily conducted for three purposes: scientific research, human space exploration, and space applications. Over the past few decades, commercial space applications have expanded rapidly and now significantly outpace the efforts of
Joseph N. Pelton, James Green
doaj   +1 more source

Microstructure‐Controlled Crack Propagation and Fracture Resistance in MoSiBTiC Alloy Revealed by Multiscale Extended Finite Element Method Modeling

Advanced Engineering Materials, EarlyView.
A two‐dimensional multiscale finite element analysis framework was established for the first‐generation MoSiBTiC alloy, and the mechanical and fracture‐related parameters of the constituent phases were calibrated through experiments and simulations. The framework provides a basis for analyzing crack propagation behavior in its complex microstructure ...
Junfeng Du, Takahiro Kaneko, Xinyu Yan, Takahito Ohmura, Kyosuke Yoshimi   +4 more
wiley   +1 more source

Linking weather variability and climatic pressure dipole in the Antarctic region of Amundsen – Bellingshausen – Weddell Seas

Український антарктичний журнал
The climatic pressure dipole, formed by the Amundsen Sea Low (ASL) and the high-pressure area east of the Antarctic Peninsula (AP), is a major contributor to weather variability in West Antarctica and the peninsula region.
Larysa Pysarenko, Mykhailo Savenets, Denys Pishniak   +2 more
doaj   +1 more source

A vapor generator for transonic flow visualization [PDF]

A vapor generator was developed for use in the NASA Langley Transonic Dynamics Tunnel (TDT). Propylene glycol was used as the vapor material. The vapor generator system was evaluated in a laboratory setting and then used in the TDT as part of a laser ...
Bruce, Robert A., Hess, Robert W., Rivera, Jose A., Jr.   +2 more
core   +1 more source

Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys

Advanced Engineering Materials, EarlyView.
Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak, Olha Zvirko, Rostyslav Leshchak, Hryhoriy Nykyforchyn   +3 more
wiley   +1 more source

Temperature, pressure and density of Venus' atmosphere according to measurement data of the AIS Venera-4 [PDF]

Atmospheric temperature, pressure, and density of Venus according to measurements obtained by AIS Venera-
Avduyevskiy, V. S., Borodin, N. F., Kuznetsov, V. V., Marov, M. YA.   +3 more
core   +1 more source

Fatigue Crack Initiation and Growth in Nanocrystalline Ni at Multiple Length‐Scales

Advanced Engineering Materials, EarlyView.
Overview of miniaturized in situ SEM fatigue setup and resultant fatigue crack growth data for nanocrystalline Ni. The presented study focuses on the analysis of fatigue crack growth rate (FCGR) in focused ion beam‐notched microcantilevers prepared from nanocrystalline (NC) Ni as a model material.
Igor Moravcik, Alexander Jelinek, Markus Alfreider, Jutta Luksch, Anton Hohenwarter, Florian Schaefer, Christian Motz, Daniel Kiener   +7 more
wiley   +1 more source

Surge behavior in Alexandria western harbor and its correlation to dominant meteorological condition

Maritime Research and Technology
This study investigates the relationship between wind regime (speed and direction) and atmospheric pressure versus surge heights at Alexandria Western Harbor (AWH) over 19 months from 5th June 2018 to 9th January 2020.
Mohamed Mahmoud Mohamed Heiba, Tarek Mohamed El-Geziry, Sameh Tawfik Abd El Fattah   +2 more
doaj   +1 more source

The atmospheric pressure at the surface of Mars, volume 6, number 12 [PDF]

Atmospheric pressure at surface of Mars estimated from photoelectric measurements of eclipses of ...
Rakos, K. D.
core   +1 more source

Recycling of NiTi Shape Memory Alloys: Fundamental and Technological Aspects of a Vacuum Induction Melting Processing Route

Advanced Engineering Materials, EarlyView.
The present study investigates recycling of NiTi shape memory alloys via vacuum induction melting. An ingot was synthesized from elemental Ni and Ti and subjected to three subsequent remelting cycles. Remelting increases process durations and impurity levels and adversely affects microstructures and functional properties.
Sakia Sophia Noorzayee, Son Tung Mai, Sarath Menon, Braulio Gadiel Sánchez Ortega, Ralf Drautz, Alexander Kauffmann, Gunther Eggeler, Jan Frenzel   +7 more
wiley   +1 more source