Results 101 to 110 of about 3,171 (198)
PEKK powders for selective laser sintering
, 2022 Nowadays, the need to develop ever more innovative and efficient materials puts constant pressure on a large number of industrial sectors. Among them, aeronautics, aerospace, transport and energy production sectors seek to lighten the structure of their equipment in order to reduce energy consumption and minimize their environmental footprint.
openaire +1 more source
On the number of prime factors of values of the sum-of-proper-divisors function [PDF]
, 2015 Let $\omega(n)$ (resp. $\Omega(n)$) denote the number of prime divisors (resp. with multiplicity) of a natural number $n$. In 1917, Hardy and Ramanujan proved that the normal order of $\omega(n)$ is $\log\log n$, and the same is true of $\Omega(n ...
Troupe, Lee
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Journal of Advanced Joining ProcessesWelding high-performance thermoplastics has gained popularity across various industries such as automotive, aerospace, and medical. Laser transmission welding (LTW) has emerged as an effective method for joining thermoplastic parts due to its precise ...
Marcela Matus-Aguirre +5 more
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Cost studies for commercial fuselage crown designs [PDF]
Studies were conducted to evaluate the cost and weight potential of advanced composite design concepts in the crown region of a commercial transport. Two designs from each of three design families were developed using an integrated design-build team.
Metschan, S. L. +5 more
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, 2017 Tämän tutkielman tarkoituksena on tutustua täydellisiin lukuihin ja niiden ominaisuuksiin. Täydellisiin lukuihin liittyy matematiikan avoimia ongelmia, kuten parittomien täydellisten lukujen olemassaolo tai parillisten täydellisten lukujen lukumäärä ...
Niemistö, Katja
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Coordinate sum and difference sets of $d$-dimensional modular hyperbolas
, 2012 Many problems in additive number theory, such as Fermat's last theorem and the twin prime conjecture, can be understood by examining sums or differences of a set with itself. A finite set $A \subset \mathbb{Z}$ is considered sum-dominant if $|A+A|>|A-A|$.
Bower, Amanda +3 more
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, 2017 Pour les polymères thermoplastiques renforcés de fibres de carbone, le taux de cristallinité et la morphologie induite lors de la cristallisation ont un impact certain sur leurs propriétés physiques et mécaniques. Ces deux paramètres sont non seulement dépendants des conditions de mise oeuvre mais aussi des constituants du composite.
Chelaghma, Saber +6 more
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Non-Syndromic Tooth Agenesis: Interdisciplinary Case
International Dental JournalIntroduction: This case employed orthodontic space redistribution for missing teeth, integrating digital technologies (intraoral scanning, CAD-CAM) for diagnostic and definitive prosthesis fabrication.
Ou-Yang Shaobo, Lian Lan, Hong Jinming
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Nonlinear Dynamic Behavior of Impact Damage in a Composite Skin-Stiffener Structure [PDF]
, 2013 One of the key issues in composite structures for aircraft applications is the early identification of damage. Often, service induced damage does not involve visible plastic deformation, but internal matrix related damage, like delaminations.
Akkerman, R. +5 more
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Composites Part C: Open AccessThis work presents the first systematic investigation of the temperature-dependent mechanical behavior in hybrid NiTi/CF-PolyEtherKetoneKetone (PEKK) composite laminates (HNCLs), which has remained unexplored to date.
Muzafar Hussain +3 more
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