Results 41 to 50 of about 80,881 (317)

Multidisciplinary Design Optimization of the NASA Metallic and Composite Common Research Model Wingbox: Addressing Static Strength, Stiffness, Aeroelastic, and Manufacturing Constraints

Aerospace
This 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, Timoleon Kipouros, James F. Whidborne   +2 more
doaj   +1 more source

From Clinic to Computation: Multiscale Bioengineering Strategies for Durable Biological Aortic Valve Replacements

Advanced Functional Materials, EarlyView.
Bioprosthetic aortic valves have revolutionized the treatment of aortic stenosis, but their durability is limited by structural valve deterioration (SVD). This review focuses on the pericardial tissue at the heart of these valves, examining how its mechanical properties and calcification drive fatigue and failure.
Gabriele Greco, Pierfrancesco Gaziano, Serena Anglese, Simone Morganti, Carlo de Vincentiis, Ferdinando Auricchio, Michele Marino, Michele Conti   +7 more
wiley   +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

Atomic‐Level Ionic Displacement Polarization Enhanced Piezocatalytic Hydrogen Evolution in Covalent Organic Frameworks

Advanced Functional Materials, EarlyView.
Two isomorphic COFs were synthesized and compared, including an amphoteric COF (SQ‐TAPT) and a neutral COF (PDA‐TAPT). The ionic bonds in SQ‐TAPT introduce more Born effective charges, thereby enhancing its ionic displacement polarization. Experimental and theoretical calculations demonstrated that SQ‐TAPT exhibited higher polarity and stronger ...
Ge Yan, Xiaodong Sun, Kailai Zhang, Shuai Zhang, Haijun Hu, Hui Li, Zhenglong Li, Hongwei Huang, Liqun Ye, Jiyang Li, Yunling Liu, Hongge Pan, Tianyi Ma   +12 more
wiley   +1 more source

Four New Capabilities in NASTRAN for Dynamic and Aeroelastic Analyses of Rotating Cyclic Structures [PDF]

, 1984
Static aerothermoelastic design/analysis of axial-flow compressors, modal flutter analysis of axial-flow turbomachines, forced vibration analysis of rotating cyclic structures and modal flutter analysis of advanced turbopropellers with highly swept ...
Elchuri, V., Gallo, A. M.
core   +1 more source

Science‐Towards‐Technology Breakthrough in CO2 Electroreduction: Multiphysics, Multiscale, and Artificial Intelligence Insights

Advanced Materials, EarlyView.
Electrochemical CO2RR is a key technology for converting CO2 into chemicals, but there remains a gap between “laboratory science” and “engineering practice” in current research. This review establishes a multi‐scale research framework, encompassing atomic‐level characterization, microenvironment regulation, external field‐assisted optimization, and AI ...
Ping Hong, Changfan Xu, Huaping Zhao, Yong Lei   +3 more
wiley   +1 more source

Cable Flutter Analysis of ALFLEX.

Journal of the Japan Society for Aeronautical and Space Sciences, 1998
This paper introduces the flutter phenomenon occurring in the automatic landing flight experiment for a Japanese unmanned space shuttle of HOPE-X. The experimental vehicle called ALFLEX which was a dynamically scaled model of HOPE-X was towed by one cable before its release. An oscillation was observed on the cable with release device during flights of
Tetsuhiko UEDA, Toshikazu MOTODA, Hidehiko NAKAYASU   +2 more
openaire   +2 more sources

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, Toshio WATANABE, Tatsuya FURUKAWA   +2 more
openaire   +3 more sources

Arm‐Length‐Controlled CsPbBr3 Nanocrystals for Tunable Optical and Assembly Behavior

Advanced Materials, EarlyView.
In this work, the synthesis parameters that dictate the formation of armed CsPbBr3 nanocrystals are described, and routes enabling precise control over arm length are proposed. Direct links between morphology and optoelectronic behavior are established.
Irina Skvortsova, Sudipta Seth, Juliette Zito, Robin Girod, Bob Van Hout, Annick De Backer, Tom Stoops, Sergey Abakumov, Evgenii Vlasov, Tejmani Behera, Sandra Van Aert, Elke Debroye, Johan Hofkens, Sara Bals   +13 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, Vincent R. Capece, Ronald B. Fost   +2 more
doaj   +1 more source