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A highly resolving fibre optic sensor based on the Fabry-Perot technology has been developed for
integration into concrete piles with the purpose of static and dynamic pile testing as well as monitoring. The
paper presents the design of the sensitive element and first results of large-scale model pile tests.
Ein dreidimensionaler Prüfkörper für die Lunkererkennung in Gussteilen mittels Computertomographie
(2010)
In the lightweight body shell mass production of automobiles, the application of hybrid bonding techniques becomes more and more important. Especially the combination of adhesive bonding and resistance spot welding called weldbonding is of great importance. The target of this contribution is to show the influence of medium-viscosity and low-viscosity structural adhesives on the process reliability of the weldbonding process and the mechanical properties of the hybrid bonded joints. The given results are based on the application of an epoxy PUR-based, an epoxy resin-based and a rubber-based adhesive system for joining a mild and some different advanced high strength steels (AHSS). It will be shown that both the process reliability of the weldbonding process and the mechanical behaviour of the weldbonded joints are influenced by the combinations of the base metals, the applied adhesive systems and the choice of the joining parameters. The behaviour of the weldbonded joints will be studied under quasi-static and impact loads. The discussion of the metallurgical structure of the weldbonded joints depending on the joining parameters will be given, too. Furthermore, the fatigue behaviour of the weldbonded joints will be studied.