Prior to the production of prototypes, adhesive tests have hitherto only been undertaken on coupon specimens. Researchers at Fraunhofer IWES, together with industrial partners, have now developed a subcomponent test as an intermediate step. This provides additional understanding of material behavior on a structure-relevant scale. This more comprehensive approach reduces uncertainty for scale-up process to subcomponent design stage.
The aim of the UpWind project was to develop accurate, verified tools and component concepts for very large wind turbines (8-10 MW), both onshore and offshore. Ever longer rotor blades are being used for multi-megawatt wind turbines. They usually consist of two half-shells, which are bonded together with special adhesive. The loads that act on the bonded joint and the requirement for a service life of 20 years put extreme demands on the bond line. The latter can have a thickness of about 10 millimeters and a length of about 60 meters.More realistic load distribution
enhanced by parallel industry projects done with Henkel. A “beam in bending” test methodology that was has been developed in collaboration with Henkel was the starting point of the improvement.
“Knowledge of the physical properties of our products under in-service conditions is essential for successful applications,” explains Felix Kleiner, Manager of Adhesive Engineering at Henkel AG & Co. KGaA. “The new test method allows economic evaluation of different adhesives and design variations”. The base model that was used for this was an I-beam - a model which takes into account two bonded seams between spar cap - shear web - spar cap.Enhanced understanding of material behavior
Molecular switch detects metals in the environment
15.08.2018 | Université de Genève
Breakthrough in nanoresearch - Quantum chains in graphene nanoribbons
09.08.2018 | Empa - Eidgenössische Materialprüfungs- und Forschungsanstalt
Scientists at the University of California, Los Angeles present new research on a curious cosmic phenomenon known as "whistlers" -- very low frequency packets...
Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.
When engineers or designers want to test the aerodynamic properties of the newly designed shape of a car, airplane, or other object, they would normally model...
Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.
Global demand for electric vehicles is forecast to rise sharply: by 2025, the number of new vehicle registrations is expected to reach 25 million per year....
Proteins must be folded correctly to fulfill their molecular functions in cells. Molecular assistants called chaperones help proteins exploit their inbuilt folding potential and reach the correct three-dimensional structure. Researchers at the Max Planck Institute of Biochemistry (MPIB) have demonstrated that actin, the most abundant protein in higher developed cells, does not have the inbuilt potential to fold and instead requires special assistance to fold into its active state. The chaperone TRiC uses a previously undescribed mechanism to perform actin folding. The study was recently published in the journal Cell.
Actin is the most abundant protein in highly developed cells and has diverse functions in processes like cell stabilization, cell division and muscle...
Scientists have discovered that the electrical resistance of a copper-oxide compound depends on the magnetic field in a very unusual way -- a finding that could help direct the search for materials that can perfectly conduct electricity at room temperatur
What happens when really powerful magnets--capable of producing magnetic fields nearly two million times stronger than Earth's--are applied to materials that...
08.08.2018 | Event News
27.07.2018 | Event News
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15.08.2018 | Physics and Astronomy
15.08.2018 | Earth Sciences
15.08.2018 | Physics and Astronomy