2019
Schmidt, Carsten; Fix, Johann; Timmermann, Marc; Werner, Simon
Flexible Produktion individualisierter CFK-Strukturen Artikel
In: lightweight.design, Bd. 12, Nr. 6, S. 58-63, 2019, ISSN: 2192-8738.
Abstract | BibTeX | Schlagwörter: Continuous Wet Draping, Draping Simulation, Light Weight Construction
@article{Schmidt2019c,
title = {Flexible Produktion individualisierter CFK-Strukturen},
author = {Carsten Schmidt and Johann Fix and Marc Timmermann and Simon Werner},
issn = {2192-8738},
year = {2019},
date = {2019-12-19},
journal = {lightweight.design},
volume = {12},
number = {6},
pages = {58-63},
abstract = {Das Forschungsprojekt FlexProCFK adressiert die anlagen- und materialtechnischen Herausforderungen, die bei der Herstellung komplexer CFK-Strukturen entstehen. Aus der Vision, bionische Strukturen im Flugzeugbau zu etablieren, ist eine Legetechnologie entstanden, die die bisherige Bandbreite automatisiert herstellbarer Bauteile signifikant erweitert.},
keywords = {Continuous Wet Draping, Draping Simulation, Light Weight Construction},
pubstate = {published},
tppubtype = {article}
}
Das Forschungsprojekt FlexProCFK adressiert die anlagen- und materialtechnischen Herausforderungen, die bei der Herstellung komplexer CFK-Strukturen entstehen. Aus der Vision, bionische Strukturen im Flugzeugbau zu etablieren, ist eine Legetechnologie entstanden, die die bisherige Bandbreite automatisiert herstellbarer Bauteile signifikant erweitert.
Budelmann, Dennis; Reichert, Lisa; Schmidt, Carsten; Meiners, Dieter
Design und Herstellung unkonventionell versteifter Flugzeugstrukturen Artikel
In: Sonderprojekte ATZ/MTZ, Bd. 24, Nr. 2, S. 46-48, 2019, ISSN: 2509-4610.
Abstract | Links | BibTeX | Schlagwörter: Continuous Wet Draping, Design Optimization, Light Weight Construction
@article{Budelmann2019b,
title = {Design und Herstellung unkonventionell versteifter Flugzeugstrukturen},
author = {Dennis Budelmann and Lisa Reichert and Carsten Schmidt and Dieter Meiners},
doi = {10.1007/s41491-019-0045-8},
issn = { 2509-4610},
year = {2019},
date = {2019-12-18},
journal = {Sonderprojekte ATZ/MTZ},
volume = {24},
number = {2},
pages = {46-48},
abstract = {Am gemeinsamen Forschungsstandort in Stade entwickeln die TU Clausthal, die TU Braunschweig und die Leibniz Universität Hannover eine Fertigungstechnologie zur Herstellung komplex gekrümmter Faserverbundbauteile. Als individuelle Versteifungsstrukturen im Flugzeugrumpf ermöglichen diese Bauteile die notwendige Gewichtsreduktion im Flugzeugbau.},
keywords = {Continuous Wet Draping, Design Optimization, Light Weight Construction},
pubstate = {published},
tppubtype = {article}
}
Am gemeinsamen Forschungsstandort in Stade entwickeln die TU Clausthal, die TU Braunschweig und die Leibniz Universität Hannover eine Fertigungstechnologie zur Herstellung komplex gekrümmter Faserverbundbauteile. Als individuelle Versteifungsstrukturen im Flugzeugrumpf ermöglichen diese Bauteile die notwendige Gewichtsreduktion im Flugzeugbau.
2018
Deniz, Onur
Multi-Criteria Methodology for the Production-Oriented Optimisation of Composite Aircraft Structures Promotionsarbeit
Technische Universität Braunschweig, 2018, ISBN: 978-3-947623-06-8.
Abstract | BibTeX | Schlagwörter: Design Optimization, Light Weight Construction
@phdthesis{Deniz2018b,
title = {Multi-Criteria Methodology for the Production-Oriented Optimisation of Composite Aircraft Structures},
author = {Onur Deniz},
isbn = {978-3-947623-06-8},
year = {2018},
date = {2018-03-08},
school = {Technische Universität Braunschweig},
abstract = {The current applications of the composite materials in the commercial aviation are carried out only on the material level by slight adjustments while maintaining the traditional design topology, due to the fact that the composite materials are prone to each manufacturing step leading to formidable challenges particularly in seeking innovative concepts. Therefore, multi-disciplinary criteria must be addressed in the design of innovative composite air-frames such as structural failure, weight savings, economic efficiency, manufacturability, production deviations and defects leading to reoccurring manual phases between the design engineers and manufacturers. Existing design methodologies lack in the comprehensive con-sideration of such aspects. Hence, the realisation of cutting-edge composite designs aiming to reduce structural weight as well as the direct operating costs, becomes inefficient and time-consuming by the current design methodologies. The aim of the dissertation is to develop and demonstrate a multi-criteria design method-ology for the production-oriented design of innovative stiffened airframes. The methodology is composed based on the interdisciplinary interaction between the structural design and the production during the product development covering the above addressed issues in the com-posite design. For the implementation of the methodology, a multi-disciplinary design envi-ronment was built by the interdisciplinary parametric representations of structures and pro-cesses in an interactive framework consisting of several modules. The structural modules carry out automated Finite Element (FE) modelling for the stability and material failure cal-culations of a wide variety of stiffened panel designs whereas the process modules conduct manufacturing and cost analysis of arbitrary components. This includes, in particular, manu-facturability analysis of an automated fibre placement process, including the tow-gap esti-mation which is validated by an experimental setup as well as the drapability analysis of fabrics with the identification of fibre misalignments which is coupled with the FE models. Moreover, the economic aspects of the structural design are addressed by estimating the production costs through the process models belonging to a user-defined production chain. The framework composes interdisciplinary criteria into a fitness value by an evaluation model for the ranking and the development of structures (individuals) by a coupled evolu-tionary optimisation environment. The applicability of the developed methodology is first demonstrated by the cost-weight optimisations of conventionally stiffened panel concepts with varying stiffener topologies under the influences of associated process histories. Consequently, the framework is em-ployed for the cost-weight optimisation of a newly developed unconventionally stiffened Lattice-Grid panel under the influences of newly developed manufacturing systems. The developed framework generates a set of process-oriented (defect-free) designs with realistic cost-weight trade-offs as well as their production chain for the preference of the user. The obtained solutions satisfy the multi-disciplinary criteria such as structural integrity, manu-facturability and economical requirements based on a user defined business model.},
keywords = {Design Optimization, Light Weight Construction},
pubstate = {published},
tppubtype = {phdthesis}
}
The current applications of the composite materials in the commercial aviation are carried out only on the material level by slight adjustments while maintaining the traditional design topology, due to the fact that the composite materials are prone to each manufacturing step leading to formidable challenges particularly in seeking innovative concepts. Therefore, multi-disciplinary criteria must be addressed in the design of innovative composite air-frames such as structural failure, weight savings, economic efficiency, manufacturability, production deviations and defects leading to reoccurring manual phases between the design engineers and manufacturers. Existing design methodologies lack in the comprehensive con-sideration of such aspects. Hence, the realisation of cutting-edge composite designs aiming to reduce structural weight as well as the direct operating costs, becomes inefficient and time-consuming by the current design methodologies. The aim of the dissertation is to develop and demonstrate a multi-criteria design method-ology for the production-oriented design of innovative stiffened airframes. The methodology is composed based on the interdisciplinary interaction between the structural design and the production during the product development covering the above addressed issues in the com-posite design. For the implementation of the methodology, a multi-disciplinary design envi-ronment was built by the interdisciplinary parametric representations of structures and pro-cesses in an interactive framework consisting of several modules. The structural modules carry out automated Finite Element (FE) modelling for the stability and material failure cal-culations of a wide variety of stiffened panel designs whereas the process modules conduct manufacturing and cost analysis of arbitrary components. This includes, in particular, manu-facturability analysis of an automated fibre placement process, including the tow-gap esti-mation which is validated by an experimental setup as well as the drapability analysis of fabrics with the identification of fibre misalignments which is coupled with the FE models. Moreover, the economic aspects of the structural design are addressed by estimating the production costs through the process models belonging to a user-defined production chain. The framework composes interdisciplinary criteria into a fitness value by an evaluation model for the ranking and the development of structures (individuals) by a coupled evolu-tionary optimisation environment. The applicability of the developed methodology is first demonstrated by the cost-weight optimisations of conventionally stiffened panel concepts with varying stiffener topologies under the influences of associated process histories. Consequently, the framework is em-ployed for the cost-weight optimisation of a newly developed unconventionally stiffened Lattice-Grid panel under the influences of newly developed manufacturing systems. The developed framework generates a set of process-oriented (defect-free) designs with realistic cost-weight trade-offs as well as their production chain for the preference of the user. The obtained solutions satisfy the multi-disciplinary criteria such as structural integrity, manu-facturability and economical requirements based on a user defined business model.
2016
Denkena, Berend; Schmidt, Carsten; Weber, Patricc
Automated Fiber Placement Head for Manufacturing of Innovative Aerospace Stiffening Structures Artikel
In: Procedia Manufacturing, Bd. 6, S. 96-104, 2016.
Abstract | Links | BibTeX | Schlagwörter: Automated Fiber Placement, Light Weight Construction, Manufacturing Quality, Prepreg
@article{Denkena2016b,
title = {Automated Fiber Placement Head for Manufacturing of Innovative Aerospace Stiffening Structures},
author = {Berend Denkena and Carsten Schmidt and Patricc Weber},
url = {http://www.sciencedirect.com/science/article/pii/S2351978916301494},
doi = {http://dx.doi.org/10.1016/j.promfg.2016.11.013},
year = {2016},
date = {2016-11-21},
journal = {Procedia Manufacturing},
volume = {6},
pages = {96-104},
abstract = {In the research project “High-performance Production of CFRP Structures” (HP CFK) a new automated fiber placement (AFP) system for laying thermoset CFRP (carbon fiber-reinforced plastic) slit tapes was developed. Its novel, modular designed laying head faces current industrial needs and challenges of prospective carbon light weight applications, e. g. future aerospace stiffening structures. Thus, its compaction unit is optimized for producing complex-curved structures. To allow approximating slopes on curved geometries, it consists of several height-adjustable rollers which, in addition, are each pressure controlled to enable an individual compacting pressure for the lay-up on materials with different compression strength (e. g. foams, metals). Furthermore, the design of the laying heads cutting unit aided the manufacturing of complex structures while being located as near as possible to the nip point to allow very short minimum placement paths. This paper introduces into the general design of the modular laying head as well as preliminary results of validation studies regarding several process limits.},
keywords = {Automated Fiber Placement, Light Weight Construction, Manufacturing Quality, Prepreg},
pubstate = {published},
tppubtype = {article}
}
In the research project “High-performance Production of CFRP Structures” (HP CFK) a new automated fiber placement (AFP) system for laying thermoset CFRP (carbon fiber-reinforced plastic) slit tapes was developed. Its novel, modular designed laying head faces current industrial needs and challenges of prospective carbon light weight applications, e. g. future aerospace stiffening structures. Thus, its compaction unit is optimized for producing complex-curved structures. To allow approximating slopes on curved geometries, it consists of several height-adjustable rollers which, in addition, are each pressure controlled to enable an individual compacting pressure for the lay-up on materials with different compression strength (e. g. foams, metals). Furthermore, the design of the laying heads cutting unit aided the manufacturing of complex structures while being located as near as possible to the nip point to allow very short minimum placement paths. This paper introduces into the general design of the modular laying head as well as preliminary results of validation studies regarding several process limits.
2012
Schmidt, Carsten
CFK Nord in Stade: Neue Perspektiven für den Leichtbau und den wissenschaftlichen Nachwuchs, pzh 2012, Das Magazin des Produktionstechnischen Zentrums der Leibniz Universität Hannover Artikel
In: PZH, Das Magazin des Produktionstechnischen Zentrums der Leibniz Universität Hannover, 2012.
BibTeX | Schlagwörter: Light Weight Construction
@article{Schmidt2012,
title = {CFK Nord in Stade: Neue Perspektiven für den Leichtbau und den wissenschaftlichen Nachwuchs, pzh 2012, Das Magazin des Produktionstechnischen Zentrums der Leibniz Universität Hannover},
author = {Carsten Schmidt},
year = {2012},
date = {2012-01-01},
journal = {PZH, Das Magazin des Produktionstechnischen Zentrums der Leibniz Universität Hannover},
keywords = {Light Weight Construction},
pubstate = {published},
tppubtype = {article}
}
Schmidt, Carsten
CFK - stabiler, leichter, preiswerter - Hochkomplexe Bauteile effizienter produzieren Artikel
In: TI-Magazin, 2012.
BibTeX | Schlagwörter: Light Weight Construction
@article{Schmidt2012b,
title = {CFK - stabiler, leichter, preiswerter - Hochkomplexe Bauteile effizienter produzieren},
author = {Carsten Schmidt},
year = {2012},
date = {2012-01-01},
journal = {TI-Magazin},
keywords = {Light Weight Construction},
pubstate = {published},
tppubtype = {article}
}
Köb, Nicolas
Schneller und günstiger produzieren Artikel
In: Wirtschaft Weser-Elbe, Bd. 7-8/12, 2012.
BibTeX | Schlagwörter: Light Weight Construction
@article{Köb2012,
title = {Schneller und günstiger produzieren},
author = {Nicolas Köb},
editor = {IHK Stade},
year = {2012},
date = {2012-01-01},
journal = {Wirtschaft Weser-Elbe},
volume = {7-8/12},
keywords = {Light Weight Construction},
pubstate = {published},
tppubtype = {article}
}
2011
Schmidt, Carsten
Weiterer CFK-Forschung-Baustein für Europas Leichtbaustandort Nr. 1. Artikel
In: phi - Produktionstechnik Hannover informiert, Bd. 12, S. 4-5, 2011.
Abstract | BibTeX | Schlagwörter: Light Weight Construction
@article{Schmidt2011,
title = {Weiterer CFK-Forschung-Baustein für Europas Leichtbaustandort Nr. 1. },
author = {Carsten Schmidt},
year = {2011},
date = {2011-12-01},
journal = {phi - Produktionstechnik Hannover informiert},
volume = {12},
pages = {4-5},
abstract = {Seit Mai 2011 betreiben die Mitgliedsuniversitäten der Niedersächsisch Technischen Hochschule (NTH) eine neue Betriebsstätte im CFK Nord in Stade. Zehn junge Ingenieure absolvieren hier eine strukturierte Doktorandenausbildung und forschen im Verbund zur Hochleistungsproduktion von CFK-Strukturen.},
keywords = {Light Weight Construction},
pubstate = {published},
tppubtype = {article}
}
Seit Mai 2011 betreiben die Mitgliedsuniversitäten der Niedersächsisch Technischen Hochschule (NTH) eine neue Betriebsstätte im CFK Nord in Stade. Zehn junge Ingenieure absolvieren hier eine strukturierte Doktorandenausbildung und forschen im Verbund zur Hochleistungsproduktion von CFK-Strukturen.