Results 11 to 20 of about 1,098,878 (302)

LS-Dyna Impact Modelling on Carbon Fibre Reinforced Polymers (CFRP) Composite Aircraft Panel with Various Impactors

open access: yesEngineering Proceedings, 2023
In the aviation industry, the usage of composites is increasing because of their unique feature in terms of damage tolerance and high structural integrity.
Gayathri Ravinath, Jims John Wessley
doaj   +1 more source

Nonlinear Dynamics of Imperfect FGM Conical Panel [PDF]

open access: yesShock and Vibration, 2018
Structures composed of functionally graded materials (FGM) can satisfy many rigorous requisitions in engineering application. In this paper, the nonlinear dynamics of a simply supported FGM conical panel with different forms of initial imperfections are investigated.
Yan Niu   +4 more
openaire   +2 more sources

Analytical investigation of impact of blunt projectile with different ended into sandwich panels [PDF]

open access: yesمجله مدل سازی در مهندسی, 2015
In this paper, an analytical model has been presented for energy absorption of sandwich panels under ballistic impact. Aluminum-foam and composite-foam sandwich panel are investigated in this paper.
seyed sajad jafari, saeid feli
doaj   +1 more source

Retrieving BRDFs from UAV-based radiometers for fiducial reference measurements: caveats and recommendations

open access: yesFrontiers in Remote Sensing, 2023
Surface Bidirectional reflectance distribution function (BRDF) is a key intrinsic geophysical variable depending only on the characteristics of the observed medium.
Sebastian Schunke   +2 more
doaj   +1 more source

Ballistic resistance and energy dissipation of woven-fabric composite targets: Insights on the effects of projectile shape and obliquity angle

open access: yesDefence Technology, 2023
This study aims at investigating the ballistic resistance and energy absorption in woven E-glass composite panels, considering different projectile nose shapes and oblique incidence angles.
Ibrahim Goda
doaj   +1 more source

Assessment of the ballistic response of honeycomb sandwich structures subjected to offset and normal impact

open access: yesDefence Technology, 2023
In the present study, experimental and numerical investigations were carried out to examine the behavior of sandwich panels with honeycomb cores. The high velocity impact tests were carried out using a compressed air gun. A sharp conical nosed projectile
Nikhil Khaire   +3 more
doaj   +1 more source

Three-player polaritons: nonadiabatic fingerprints in an entangled atom-molecule-photon system [PDF]

open access: yes, 2020
A quantum system composed of a molecule and an atomic ensemble, confined in a microscopic cavity, is investigated theoretically. The indirect coupling between atoms and the molecule, realized by their interaction with the cavity radiation mode, leads to ...
Halász, Gábor J.   +2 more
core   +2 more sources

Accurate first-derivative nonadiabatic couplings for the H3 system [PDF]

open access: yes, 2001
A conical intersection exists between the ground (1 2 A[prime]) and the first-excited (2 2A[prime]) electronic potential energy surfaces (PESs) of the H3 system for C3v geometries.
Abrol, Ravinder   +3 more
core   +1 more source

Multi-Scale Evaluation of Drone-Based Multispectral Surface Reflectance and Vegetation Indices in Operational Conditions

open access: yesRemote Sensing, 2020
Compact multi-spectral sensors that can be mounted on lightweight drones are now widely available and applied within the geo- and environmental sciences.
Dominic Fawcett   +10 more
doaj   +1 more source

Bubble and Skyrmion Crystals in Frustrated Magnets with Easy-Axis Anisotropy [PDF]

open access: yes, 2016
We clarify the conditions for the emergence of multiple-${\bf Q}$ structures out of lattice and easy-axis spin anisotropy in frustrated magnets. By considering magnets whose exchange interaction has multiple global minima in momentum space, we find that ...
Batista, Cristian D.   +2 more
core   +2 more sources

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