Results 141 to 150 of about 2,579,062 (253)
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 +5 more
wiley +1 more source
Acoustic Emission based Crack Tracking for Concrete Structures [PDF]
, 2019 Acoustic Emission (AE) monitoring is one of the possibilities to detect the crack distribution inexisting concrete structures. However, the conventional method requires further destruction likeopening of new cracks or propagation of the existing cracks ...
Zhang, F. (author), Yang, Y. (author)
core
Helium shells and faint emission lines from slitless flash spectra
, 2013 At the time of the two last solar total eclipses of August 1st, 2008 in Siberia and July 11th, 2010 in French Polynesia, high frame rate CCD flash spectra were obtained. These eclipses occurred in quiet Sun period and after.
Serge Koutchmy, Cyril Bazin
core +1 more source
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 +6 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar +7 more
wiley +1 more source
Explaining the emission lines in early-type galaxies
We explore the hypothesis that the weak emission lines observed in some early-type galaxies (ETGs) are due to ionization by hot low-mass evolved stars (HOLMES) and analyze the pros and cons.
Grażyna Stasińska
core +1 more source
INFRARED-EMISSION LINES IN TAU-SCORPII - A POLE-ON BE STAR
, 1993 We report the discovery of Bralpha and Brgamma emission in the infrared spectrum of the B0.2 V star tau Scorpii. The widths and strengths of the lines suggest that they are formed in a region of much higher density than is inferred from the UV resonance ...
WATERS, LBFM +4 more
core +1 more source
Abundance Determinations in Emission-Line Objects: The Revised Emission Line Chart
The Astronomical Journal, 1997 J. B. Kingdon, R. E. Williams
openaire +1 more source
Advanced Engineering Materials, EarlyView.Experiments and thermophysical simulations were conducted to investigate the electron beam powder bed fusion electron beam (PBF‐EB/M) process for the γ′‐strengthened nickel‐based superalloy Inconel 738LC. The results demonstrate the impact of process‐induced microstructural variations on high‐temperature mechanical behavior, providing a basis for ...
Jan Niklas Petenati +11 more
wiley +1 more source
Chromospheric Mg I emission lines of pre-main-sequence stars
Context. To reveal details of the internal structure, the relationship between chromospheric activity and the Rossby number has been extensively examined for main-sequence stars. For active pre-main-sequence (PMS) stars, it is suggested that the level of
Yuhei Takagi +5 more
core +1 more source