Results 111 to 120 of about 6,486 (244)

Application of 3D scanning technology in Royal Malaysian Air Force Industrial Revolution 4.0‐based aircraft maintenance

IET Networks, EarlyView., 2022
Abstract 3D scanning is rapidly becoming a key maintenance tool. Aerospace was a pioneer in adopting 3D scanning technology because aircraft manufacture and maintenance require precision. Monitoring deterioration, removing components for maintenance, and verifying covert operations are not practical or helpful without technology.
T. Nanthakumaran Thulasy, Puteri N. E. Nohuddin, Istas Fahrurrazi Nusyirwan, Mohd Hanafi Ahmad Hijazi, Musaddak Maher Abdul Zahra   +4 more
wiley   +1 more source

Development of Vertical Wind Turbine Blades Using 4D Printing of Composites

Polymer Composites, EarlyView.
Vertical axis wind turbine: White blade: Commercial. Black blade: Composite. ABSTRACT This paper presents the procedure to make vertical wind turbine blades using the technique of 4D printing of composites (4DPC). The blades are made using carbon/epoxy composite materials with a fiber volume fraction of about 60%.
Emad Fakhimi, Suong Van Hoa
wiley   +1 more source

Environmental Impact Assessment of an Innovative Sustainable Thermoplastic Anticorrosion Coating for Aluminum Alloy AA2024

Polymer Engineering &Science, EarlyView.
Life cycle assessment reveals that recyclable PPM coatings significantly reduce environmental impacts compared to epoxy, promoting sustainable aerospace corrosion protection. ABSTRACT This study evaluates the environmental performance of an innovative thermoplastic anticorrosion coating based on poly(phenylene methylene) (PPM) for aluminum alloy AA2024,
Marco Francesco D'Elia, Maider Iturrondobeitia, Erlantz Lizundia, Walter Caseri, Markus Niederberger   +4 more
wiley   +1 more source

Characteristics, properties and limitations of per‐ or polyfluoroalkyl substances (PFASs) and fluoropolymers

Polymer International, EarlyView.
An overview and categorization of man‐made per‐ or polyfluoroalkyl substances (PFASs) including low‐molar‐mass and high‐molar‐mass fluorochemicals, and their international regulations is presented. Though certain PFASs are toxic, bioaccumulative and cross the human cellular membranes, others, such as fluoropolymers, are safe, reliable and involved in ...
Bruno Améduri
wiley   +1 more source

Mechanical, Thermal, and Morphological Behavior of Sustainable PC/ASA Composites Reinforced With Walnut Shell Powder

Journal of Polymer Science, EarlyView.
Processing scheme of walnut shell reinforced PC/ASA biocomposites. ABSTRACT This study explores the effect of walnut shell (WS) powder as a bio‐based filler on the mechanical and thermal performance of polycarbonate (PC)/acrylonitrile–styrene–acrylate (ASA) composites.
İdris Karagöz, Harun Sepetcioglu, Aysu Çavuşoğlu, Yasemin Balçik Tamer   +3 more
wiley   +1 more source

Advanced deep-learning model for temporal-dependent prediction of dynamic behavior of AC losses in superconducting propulsion motors for hydrogen-powered cryo-electric aircraft. [PDF]

Commun Eng
Alipour Bonab S, Berg F, Song W, Colle A, Yazdani-Asrami M.   +4 more
europepmc   +1 more source

Output Feedback Design for Parameter Varying Systems Subject to Persistent Disturbances and Control Rate Constraints

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT This paper develops a framework for designing output feedback controllers for constrained linear parameter‐varying systems that experience persistent disturbances. We specifically propose an incremental parameter‐varying output feedback control law to address control rate constraints, as well as state and control amplitude constraints.
Jackson G. Ernesto, Eugênio B. Castelan, Walter Lucia   +2 more
wiley   +1 more source

Dynamic stability analysis of the aircraft electrical power system in the more electric aircraft concept. [PDF]

Sci Rep
Setlak L, Kowalik R, Gębura A, Gołda P.   +3 more
europepmc   +1 more source

PID‐Like Robust Control of Non‐Minimum Phase Robotic Manipulators

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT This paper proposes an output‐feedback tracking controller for non‐minimum phase nonlinear systems with unknown uncertainties and external disturbances, where not all states are measurable, and the zero dynamics are unstable. The approach combines a backstepping‐based stabilizing state‐feedback law with a cascade extended high‐gain observer ...
Mohammad Al Saaideh, Almuatazbellah Boker, Mohammad Al Janaideh   +2 more
wiley   +1 more source

Model predictive control for quad active bridge DC-DC converter for more electric aircraft applications. [PDF]

Sci Rep
Adam AHA, Chen J, Xu M, Kamel S, Ali G.
europepmc   +1 more source