Results 151 to 160 of about 213,145 (308)

High-order computations on aerofoil-gust interaction noise and the effects of wavy leading edges

open access: yes, 2012
High-order accurate numerical simulations are performed to investigate the effects of wavy leading edges on aerofoil gust interaction (AGI) noise. The present study is based on periodic velocity dis-turbances predominantly in streamwise (x-) and vertical
Lau, Alex Siu Hong
core  

Nondestructive Testing of Welded Composite Metal Foams

open access: yesAdvanced Engineering Materials, EarlyView.
X‐ray computed tomography (CT) is used to evaluate welded steel–steel composite metal foam (CMF) joints of two density classes. It reports variation in postweld spatial void distribution and correlates it to weld‐induced changes, mechanical performance, and failure within welded CMF panels.
Chinmaya Prerana Inguva   +2 more
wiley   +1 more source

Crowdsourced noise mapping

open access: yes, 2017
Noise. It is around us, everywhere, all the time. It is hard to control, hard to shut out. It affects our health, sometimes even without us noticing it. Noise is one form of pollution, and is causing annoyance and other health effects. Therefore, the Norwegian government set a national goal to reduce noise pollution from 1999 levels by 10% until 2020 ...
openaire   +1 more source

On the improved point-to-point calculations for noise mapping in shielded urban areas

open access: yes, 2012
Noise mapping of urban areas according to standardized engineering calculation methods systematically results in an underestimation of noise levels at areas shielded from direct exposure to noise, such as inner yards. In these methods, road traffic lanes
Forssen, J.   +16 more
core  

Encyclopedia of 2D β′‐In2Se3 Growth Using Chemical Vapor Deposition: The Effects of Synthesis Parameters Onto Material Quality

open access: yesAdvanced Engineering Materials, EarlyView.
A distinct semi‐confined inner‐tube chemical vapor deposition geometry enables reproducible, large‐area growth of phase‐pure 2D β′‐In2Se3 from InI + Se precursors. Engineering local vapor transport and optimizing precursor delivery and temperature–time conditions yield uniform continuous films.
Dasun P. W. Guruge   +8 more
wiley   +1 more source

Influence of Surface Finish on the Tribological Performance of AlTiBN Coatings Deposited on Forming Tools

open access: yesAdvanced Engineering Materials, EarlyView.
Aluminum and nitride coatings are used in industry because they are hard, resist wear, and protect against oxidation. Adding boron can improve friction behavior and other properties. This study tests coatings on surfaces with different finishes. Results show smoother surfaces perform better, while rough ones wear faster, although coatings can reduce ...
Adrián Claver   +9 more
wiley   +1 more source

Noise Mapping and Annoyance.

open access: yesNoise & health
The EC has published a Green Paper on noise policy in the EU and has issued a directive on the assessment and reduction of environmental noise. This directive will make noise mapping mandatory for cities with at least 250.000 inhabitants. Due to the development in computer technology it is possible to calculate noise maps for large urban areas using ...
openaire   +1 more source

Acoustic mapping based on measurements: Space and time interpolation

open access: yes, 2017
Noise maps based on measurements gained interest during the last decade. Network monitoring systems are deployed in various cities over the world and mobile applications allowing participatory sensing are now very common.
Lavandier, C   +6 more
core  

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