Results 11 to 20 of about 1,126,735 (301)

Virtual testing for design and certification of (fusion) bonded longitudinal joints in a fibre composite fuselage: A proposal using FEM-based progressive damage analysis

open access: yesComposites Part C: Open Access, 2022
In the design of bonded aircraft structures, the type of failure is crucial. More specifically, the failure in case of overload should be limited to the surrounding fibre composite structure.
O. Völkerink, C. Hühne
doaj   +1 more source

Preliminary Results of a Structural Health Monitoring System Application for Real-Time Debonding Detection on a Full-Scale Composite Spar

open access: yesSensors, 2023
The present paper reports the outcomes of activities concerning a real-time SHM system for debonding flaw detection based on ground testing of an aircraft structural component as a basis for condition-based maintenance.
Monica Ciminello   +10 more
doaj   +1 more source

Car Soundproof Improvement through an SMA Adaptive System

open access: yesActuators, 2018
The work at hand focuses on an adaptive system aimed at improving the soundproof performance of car door seals at specific regimes (cruise), without interfering with the conventional opening and closing operations.
Salvatore Ameduri   +5 more
doaj   +1 more source

Holistic determination of physical fracture toughness values and numerical parameters for delamination analysis considering multidirectional-interfaces

open access: yesComposites Part C: Open Access, 2022
Delaminations are a concern for the structural integrity of fibre composite structures. The decisive material parameter for delaminations is fracture toughness. Structures usually have a multidirectional ply stacking.
O. Völkerink   +3 more
doaj   +1 more source

Algorithms and Data Structures for Multi-Adaptive Time-Stepping [PDF]

open access: yes, 2008
Multi-adaptive Galerkin methods are extensions of the standard continuous and discontinuous Galerkin methods for the numerical solution of initial value problems for ordinary or partial differential equations.
Jansson, Johan, Logg, Anders
core   +2 more sources

Design and Experimental Characterization of an Actuation System for Flow Control of an Internally Blown Coanda Flap

open access: yesAerospace, 2020
The focus of the work is on the evaluation, development and integration of a robust actuator system for three-dimensional flow control of a blown Coanda flap to improve the high lift system of commercial aircraft.
Peter Wierach   +2 more
doaj   +1 more source

Integrated Shock Absorber With Both Tunable Inertance and Damping

open access: yesFrontiers in Materials, 2020
Inerter is a two-terminal mass element, and the applied force is proportional to the relative acceleration between the terminals. According to the second class of mechanical–electrical analogy, the inerter corresponds exactly to the capacitor in the ...
Wei-Min Zhong   +4 more
doaj   +1 more source

Manufacturing and Testing of a Variable Chord Extension for Helicopter Rotor Blades

open access: yesActuators, 2022
Helicopters are still an indispensable addition to aviation in this day and age. They are characterized by their ability to master both forward flight and hover. These characteristics result in a wide range of possible operations.
Christoph Balzarek   +3 more
doaj   +1 more source

Modelling of a SMA Blade Twist System Suited for Demonstration in Wind Tunnel and Whirl Tower Plants

open access: yesApplied Sciences, 2023
In this work, the modeling of a demonstrator of a morphing system aimed at altering the twist of a rotorcraft blade is presented. The device was conceived for two different representative environments: the wind tunnel plant of the University of Bristol ...
Salvatore Ameduri   +7 more
doaj   +1 more source

Urban Farming in Inner-City Multi-Storey Car-Parking Structures: Adaptive Reuse Potential [PDF]

open access: yes, 2019
The future direction of transport and new global concepts of low-carbon mobility are likely to increase the number of obsolete inner-city multi-storey car-parking structures.
Lehmann, Steffen   +1 more
core   +3 more sources

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