@inproceedings{UcsnikGradingerNosteretal., author = {Ucsnik, Stephan A. and Gradinger, Rudolf and Noster, Ulf and Pahr, Dieter H.}, title = {Finite element based optimization of a novel metal-composite-joint}, series = {1st EUCOMAS, European Conference on Materials and Structures in Aerospace, Conference Berlin, May 26 - 27, 2008 }, booktitle = {1st EUCOMAS, European Conference on Materials and Structures in Aerospace, Conference Berlin, May 26 - 27, 2008 }, publisher = {VDI-Verlag}, address = {D{\"u}sseldorf}, issn = {0083-5560}, pages = {371 -- 379}, abstract = {Aerospace and automotive industries employ three main techniques to set up joints between metal and fibre reinforced plastics parts (FRP); adhesive bonding, mechanical fastening with rives/bolts and a hybrid combination. A new joint technique has been developed to combine the two advantageous mechanisms form-closure and adhesion in a fibre-friendly way. Prior is established through metal structures (pins) which are perpendicularly welded onto metal surfaces with an arc-welding-process. They intrude into the FRP during lay-up and therefore set up a first connection. The composite-matrix is responsible for latter adhesive bonding and final form closure. Finite-element-analyses of cylindrically shaped joints are carried out to get detailed knowledge of the influence of parameters like pin-number, pin-position, pin-height, pin-form sleeve-geometry, and stiffness behaviour. Long calculation times of 3D-models lead to the introduction of a corresponding 2D-axisymmetric-model which is used to run parameter-studies within a reasonable time. For this novel technique the combination of fibre-friendly form closure and adhesive bonding of interface plays a major role. A well selected amount of vertical reinforcements, their placement and geometrical dimensions will lead to a stiffer joint. Goal is to minimize fibre-deletion and overlap length to improve load-transfer and joint-strength, to reduce weight in high-strength-applications as well as the avoidance of safety rivets.}, language = {en} } @article{KettnerNosterKilianetal., author = {Kettner, Michael and Noster, Ulf and Kilian, Helmut and Gradinger, Rudolf and Kuehlein, Wolfgang and Drevenstedt, Armin and Stadler, Franz and Ladstaetter, Elisabeth and Lutz, Andreas}, title = {The InnMag project - Processing Mg for civil aircraft application}, series = {Advanced Engineering Materials}, volume = {9}, journal = {Advanced Engineering Materials}, number = {9}, publisher = {Wiley}, doi = {10.1002/adem.200700143}, pages = {813 -- 819}, abstract = {In the context of the "InnMag" project, partners from industry and science are co-operating to investigate the issues involved in adapting established production processes to the material Mg. The project's aim is to further the deployment of Mg interior parts in civil aircraft. The project covers every production step, from alloy selection, Mg ingot melting, alloying, direct chill casting, extruding, machining, surface treatment and component assembly. This paper discusses the project's targets and the results arrived at so far, particularly in the areas of direct chill casting and extrusion.}, language = {en} }