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High Potential Process Acceleration by Selective and Volumetric Heat Transfer Methods

Kleineberg, Markus and Herbeck, Lars and Ströhlein, Tobias and Podkorytov, Maksim (2007) High Potential Process Acceleration by Selective and Volumetric Heat Transfer Methods. In: CFK Convention, 1. CFK Convention Stade, 2007-6-13 - 2007-6-14, Stade.

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To meet the demands of future composite manufacturing concepts it is essential to significantly reduce the production time. Since heating and cooling is usually a crucial time factor the DLR institute of Composite Structures and Adaptive Systems together with its partners investigated innovative heating methods on the basis of selective and volumetric heat transfer mechanism. For preforming activities inductive heating has been investigated, because it is a highly efficient, inoffensive and cost efficient approach. Since heat is only generated in limited regions of the preform (selective heating) not only heating but also cooling is highly effective and quick. To further reduce preforming time process parameters have been optimized for volumetric heating allowing even thick performs (10-30 mm) to be consolidated in one shot. To reduce processing time the application of microwave heating promised to be successful, because here it is possible to selectively heat only the laminate set-up. Tooling and autoclave (oven) which account for more than 90% of the thermal mass remain cold which in turn means that besides a significant time reduction also an enormous energy saving is possible. In principle e-beam curing is also a selective heat transfer method even though the boundary conditions are more stringent. If e-beams are used to generate x-rays a volumetric heating is possible as well. On the other hand occupational health and safety aspects cannot be ignored when x-ray processing is considered for commercial composite manufacturing. To point out the respective advantages and disadvantages the lecture will focus on a comparison of the above mentioned technologies.

Item URL in elib:https://elib.dlr.de/49259/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:High Potential Process Acceleration by Selective and Volumetric Heat Transfer Methods
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Date:June 2007
Journal or Publication Title:CFK Convention
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
EditorsEmailEditor's ORCID iD
Keywords:Composite Manufacturing Technologies, Fast Processing, Induction, Microwave, Elcetro Beam Curing, Composite, Schnelle Fertigungsverfahren, Induktion, Mikrowelle, Elektronenstrahlhärten
Event Title:CFK Convention Stade
Event Location:Stade
Event Type:international Conference
Event Dates:2007-6-13 - 2007-6-14
Organizer:CFK Valley
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:V UR - Schonung von Umwelt und Ressourcen (old)
DLR - Research area:Aeronautics
DLR - Program:L - no assignment
DLR - Research theme (Project):L - no assignment (old)
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems
Institute of Composite Structures and Adaptive Systems > Composite Technology
Deposited By: Ströhlein, Tobias
Deposited On:23 Jul 2007
Last Modified:27 Apr 2009 13:56

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