Results 131 to 140 of about 2,675,939 (329)

Ultrahigh Strength with Suppressed Flow Instability at Liquid Helium Temperature via Coherent Nanoprecipitation in a Medium‐Entropy Alloy

open access: yesAdvanced Functional Materials, EarlyView.
It is demonstrated that severe lattice distortion and coherent nanoprecipitates overcome the strength–ductility dilemma and mitigate discontinuous plastic flow (DPF) at 4.2 K. Such microstructural design enhances both thermal and athermal stress components, leading to exceptional mechanical performance.
Min Young Sung   +11 more
wiley   +1 more source

Towards Requirements in Systems Engineering for Aerospace IVHM Design [PDF]

open access: green, 2013
Abhinav Saxena   +3 more
openalex   +1 more source

Reconfigurable Metamirrors Based on Compliant Mechanisms

open access: yesAdvanced Functional Materials, EarlyView.
Providing the basis for numerous practical applications, the reconfigurability of metadevices is of great importance. Through the integration of controlled mechanical deformation with chiral meta‐atoms, a compliant mechanism based metamirror is demonstrated for active control over the polarization of electromagnetic waves.
Galestan Mackertich‐Sengerdy   +3 more
wiley   +1 more source

Work Organisation and Innovation - Case Study: Bombardier, Belgium [PDF]

open access: yes, 2013
[Excerpt] Bombardier Inc. is headquartered in Montréal, Canada and is structured around two businesses of almost the same size: aerospace and transportation. It has 76 production and engineering sites in more than 60 countries, and employs 65,400 people.
De Hauw, Yolien, Maenen, Seth
core   +1 more source

Quantifying Spin Defect Density in hBN via Raman and Photoluminescence Analysis

open access: yesAdvanced Functional Materials, EarlyView.
An all‐optical method is presented for quantifying the density of boron vacancy spin defects in hexagonal boron nitride (hBN). By correlating Raman and photoluminescence signals with irradiation fluence, defect‐induced Raman modes are identified and established an relationship linking optical signatures to absolute defect densities. This enables direct
Atanu Patra   +8 more
wiley   +1 more source

Systems design analysis applied to launch vehicle configuration [PDF]

open access: yes
As emphasis shifts from optimum-performance aerospace systems to least lift-cycle costs, systems designs must seek, adapt, and innovate cost improvement techniques in design through operations.
Ryan, R., Verderaime, V.
core   +1 more source

Deformation and Degradation in 18650 Li‐Ion Cells Under Freeze‐Thaw Cycling

open access: yesAdvanced Functional Materials, EarlyView.
This study investigates the impact of freezethaw degradation of 18650 cells via combined electrochemical and x‐ray imaging studies. High‐resolution synchrotron X‐ray tomography reveals deformation of the jelly‐roll structure and delamination of electrode active materials in cells cycled at 1C and 4C. These structural changes are quantitatively assessed
Xunkai Chen   +5 more
wiley   +1 more source

Experimental Determination of the Focal Distance of Cumulative Pyrotechnic Device in Launch Vehicle Separation System

open access: yesTehnički Glasnik
Pyrotechnic devices are widely used in modern aerospace engineering. One of the most effective types of pyrotechnic devices for performing obstacle separation operations in aerospace engineering is linear shaped charges. The penetration efficiency of the
Yevhen Boliubash
doaj   +1 more source

Moisture‐Driven Hydrogel Power Source with Asymmetric Ion Adsorption for Flexible Electronics

open access: yesAdvanced Functional Materials, EarlyView.
A hydrogel‐based power source employing asymmetric ion‐adsorbing electrodes and moisture‐driven gradients is reported. This design enables continuous electricity generation for over 4000 minutes without significant decay and without requiring external input.
Zhaoyang Sun   +9 more
wiley   +1 more source

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