Results 201 to 210 of about 185,594 (366)
Variability in airplane noise measurements [PDF]
Aircraft position and meteorological effects on accuracy of acoustic measurements for turbojet ...
Henderson, H. R., Hilton, D. A.
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Macromolecular Materials and Engineering, EarlyView.Two novel bio‐based epoxy monomers, diglycidyl‐4‐allylphenol (DG‐4A) and triglycidyl‐diallylphenol (TG‐DA), derived from estragole (92% and 72% bio‐content), were synthesized and cured with isophorone diamin (IPDA) and 4,4´‐diaminodiphenyl sulfone (DDS). The resins show high Tgs, with DG‐4A reaching and TG‐DA exceeding DGEBA‐based systems. These resins
Florian Bauer +4 more
wiley +1 more source
Interior noise levels of two propeller-driven light aircraft [PDF]
The relationships between aircraft operating conditions and interior noise and the degree to which ground testing can be used in lieu of flight testing for performing interior noise research were studied.
Catherines, J. J., Mayes, W. H.
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Latex Serum‐Derived Supramolecular Networks Enable Toughening of Natural Rubber
Macromolecular Rapid Communications, EarlyView.Latex‐serum addition enhances strain‐induced crystallization (SIC) toughening in natural rubber, increasing tearing strength and extending the SIC activation window. Supramolecular networks form via bifurcated hydrogen bonding between polyol components (e.g., quebrachitol) and end‐functionalized polyisoprene chains, serving as effective crystallization
Katsuhiko Tsunoda +5 more
wiley +1 more source
Aerodynamic and acoustic behavior of a YF-12 inlet at static conditions [PDF]
An aeroacoustic test program to determine the cause of YF-12 inlet noise suppression was performed with a YF-12 aircraft at ground static conditions. Data obtained over a wide range of engine speeds and inlet configurations are reported.
Bangert, L. H. +3 more
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Mass Spectrometry Reviews, EarlyView.ABSTRACT In the 1980s, researchers discovered the remarkable ability of electrospray plumes to effectively ionize gas‐phase molecules via secondary ionization. Around 20 years later—coinciding with the ambient mass spectrometry revolution—secondary electrospray ionization (SESI) and extractive electrospray ionization (EESI) coupled to mass spectrometry
Xin Luo +5 more
wiley +1 more source
Interaction Between Vortex‐Induced Vibrations and Base Vibrations in Piezoelectric Harvesters
International Journal of Mechanical System Dynamics, EarlyView.ABSTRACT In the present era, powering sensors using green energy is a significant challenge. One promising solution for the power supply of small sensors relies on piezoelectric energy harvesters excited by vortex‐induced vibrations (VIVs) generated by wind.
Michele Tonan +3 more
wiley +1 more source
Nano Select, EarlyView.Multifunctional structural battery composites can store electrical energy while bearing mechanical loads, thereby reducing parasitic mass and volume. We present a novel solid‐state PETEA‐based electrolyte, which can be cured in situ after infiltration into the reinforcement fibers in its monomer form.
Daniel Vogt +4 more
wiley +1 more source