Results 21 to 30 of about 17,065,072 (359)

In situ monitoring of phase transformation kinetics under rapid heating of Ti–6Al–4V titanium alloy

open access: yesJournal of Materials Research and Technology, 2022
The phase transformation kinetics of Ti–6Al–4V alloy was studied during rapid heating using in-situ high energy synchrotron diffraction and in-situ electrical resistivity measurement for heating rates varying from 0.03 to 200 °C.s−1.
Andi Idhil Ismail   +3 more
doaj   +1 more source

Low Mass Black Holes from Dark Core Collapse. [PDF]

open access: yesPhysical Review Letters, 2020
Unusual masses of black holes being discovered by gravitational wave experiments pose fundamental questions about the origin of these black holes. Black holes with masses smaller than the Chandrasekhar limit ≈1.4  M_{⊙} are essentially impossible to ...
B. Dasgupta, Ranjan Laha, A. Ray
semanticscholar   +1 more source

End-to-end process of hollow spacecraft structures with high frequency and low mass obtained with in-house structural optimization tool and additive manufacturing [PDF]

open access: yesINCAS Bulletin, 2017
In the space sector the most decisive elements are: mass reduction, cost saving and minimum lead time; here, structural optimization and additive layer manufacturing (ALM) fit best. The design must be driven by stiffness, because an important requirement
Alexandru-Mihai CISMILIANU   +7 more
doaj   +1 more source

VTVL concept optimisation of the landing gear [PDF]

open access: yesINCAS Bulletin, 2017
Vertical takeoff, vertical landing (VTVL) is a subject of international interest at the moment thanks to the successful recovery of the Blue Origin vehicle.
Camelia Elena MUNTEANU   +2 more
doaj   +1 more source

Low-energy electron ionization mass spectrometer for efficient detection of low mass species [PDF]

open access: yesReview of Scientific Instruments, 2021
The design of a high-efficiency mass spectrometer is described, aimed at residual gas detection of low mass species using low-energy electron impact, with particular applications in helium atom microscopy and atomic or molecular scattering. The instrument consists of an extended ionization volume, where electrons emitted from a hot filament are ...
M. Bergin   +7 more
openaire   +4 more sources

A numerical study of reversible plasticity using continuum dislocation mechanics

open access: yesComptes Rendus. Physique, 2021
In this contribution, an elasto-viscoplastic fast Fourier transform-based (EVPFFT) numerical implementation of the Mesoscale Field Dislocation Mechanics (MFDM) formulation, called MFDM-EVPFFT, is applied to study the reversible plastic behavior of ...
Berbenni, Stéphane   +1 more
doaj   +1 more source

First results from the CRESST-III low-mass dark matter program [PDF]

open access: yesPhysical Review D, 2019
The CRESST experiment is a direct dark matter search which aims to measure interactions of potential dark matter particles in an earth-bound detector.
A. Abdelhameed   +48 more
semanticscholar   +1 more source

Thermally-induced α→β phase transformation interweaving with abnormal α grain growth in hot extruded TNM alloy

open access: yesJournal of Materials Research and Technology, 2021
The microstructural and crystallographic features of the β phase in TNM alloy during the hot extrusion at 1290 °C and the subsequent cooling process were investigated. Except the original grain boundary β phase, two categories of β particles, along grain
Fengming Qiang   +6 more
doaj   +1 more source

Evolution of the Radius Valley around Low-mass Stars from Kepler and K2 [PDF]

open access: yesAstronomical Journal, 2019
We present calculations of the occurrence rate of small close-in planets around low-mass dwarf stars using the known planet populations from the Kepler and K2 missions.
R. Cloutier, K. Menou
semanticscholar   +1 more source

New evolutionary models for pre-main sequence and main sequence low-mass stars down to the hydrogen-burning limit [PDF]

open access: yes, 2015
We present new models for low-mass stars down to the hydrogen-burning limit that consistently couple atmosphere and interior structures, thereby superseding the widely used BCAH98 models.
I. Baraffe   +4 more
semanticscholar   +1 more source

Home - About - Disclaimer - Privacy