Results 51 to 60 of about 22,174,492 (295)
Flutter analysis of mistuned bladed disks
The Proceedings of the Dynamics & Design Conference, 2020 Although bladed disks are nominally designed to be cyclically symmetric (tuned system), the vibration characteristics of all the blades on a disk are slightly different due to the manufacturing tolerance, deviations in the material properties, and wear during operation.
Yasutomo KANEKO +2 more
openaire +3 more sources
Flutter analysis of vertical-axis wind turbine blades using a simplified aeroelastic model [PDF]
, 2023 : This study investigates the aeroelastic flutter of a vertical-axis wind turbine (VAWT) blade using a two-degree-of-freedom typical section model and the unsteady aerodynamic theory.
core +1 more source
Direct Growth of 2D Bilayers on Au(111) for Low‐Coercive Sliding Ferroelectricity
Advanced Materials, EarlyView.Controlled CVD growth of stacking‐defined bilayer ReS2 on Au(111) enables parallel‐stacked bilayers with intrinsic sliding ferroelectricity, a strong piezoelectric response, and an ultralow coercive voltage. Atomic‐resolution imaging and in situ measurements further reveal the decisive role of clean interfaces in achieving low‐barrier ferroelectric ...
Honglin Chen +7 more
wiley +1 more source
AerospaceThis study explores the multidisciplinary design optimization (MDO) of the NASA Common Research Model (CRM) wingbox, utilizing both metallic and composite materials while addressing various constraints, including static strength, stiffness ...
Odeh Dababneh +2 more
doaj +1 more source
Flutter Boundary Prediction of a Two Dimensional Airfoil in Transonic Flight Regime with the Preset Angles of Attack [PDF]
Xibei Gongye Daxue Xuebao, 2018 Angle of attack has impact on transonic flow filed and aerodynamic force, but most of current researches on flutter use zero angle hypothesis, which has no consideration about angle of attack.
doaj +1 more source
Advanced Materials, EarlyView.The mechanical performance of nanocellular polyetherimide cannot be explained by nanoporosity alone. It is shown that CO2 saturation and desorption leave a distinct mechanical signature in the glassy matrix before foaming. This matrix contribution provides a new route to understand and optimize the brittle to ductile transition in nanocellular polymers.
Félix Lizalde‐Arroyo +7 more
wiley +1 more source
Experimental Methods Applied in a Study of Stall Flutter in an Axial Flow Fan
Shock and Vibration, 2004 Flutter testing is an integral part of aircraft gas turbine engine development. In typical flutter testing blade mounted sensors in the form of strain gages and casing mounted sensors in the form of light probes (NSMS) are used.
John D. Gill +2 more
doaj +1 more source
Multi‐Biomimetic Structural Colors Inspired by Pearls and Bird Feathers
Advanced Materials, EarlyView.A dual‐biomimetic strategy mimicking pearls and bird feathers is proposed to construct full‐gamut structural colors. By integrating a non‐strictly periodic inorganic multilayer architecture with tunable light absorbers, this facile approach circumvents the complex fabrication of traditional 1D photonic crystals, offering immense potential for cosmetics,
Zhiwei Wang +12 more
wiley +1 more source
Experimental and numerical study of dynamic characteristic of a complex all-movable rudder system
Journal of Low Frequency Noise, Vibration and Active Control, 2018 Modal analysis and flutter computation of a complex tail cabin system including six all-movable rudders for hypersonic flight vehicle was studied in this paper.
Yuguang Bai +3 more
doaj +1 more source
Advanced Materials Technologies, EarlyView.A sustainable polymer–carbon nanotube bilayer enables efficient near‐infrared photodetection in a simple lateral planar p–n junction thin‐film architecture. Thermal side‐chain cleavage enhances interfacial coupling, shifts the dominant photoresponse from 800 to 1000 nm, and substantially improves device performance.
Jenner H. L. Ngai +3 more
wiley +1 more source