Benjamin Zillmann

• Dr.-Ing.
• Bosch

Abstract: Today, as well as in the future, electric vehicles are in the focus of automotive research. In this context, the determination of vibration loads is required for the design of the traction battery. In this work we investigate how data-based models can be used for this purpose. In particular, we address neural networks of LSTM type and ARM...

Nowadays electric cars are in the spotlight of automotive research. In this context we consider data based approaches as tools to improve and facilitate the car design process. Hereby, we address the challenge of vibration load prediction for electric cars using neural network based machine learning (ML), a data-based frequency response function ap...

In this study, various structuring methods for creating adhesion by mechanical interlocking in the interface of metal/FRP (fiber-reinforced polymer) joints are investigated. A novel processing route using thermal spray coatings as additive structure is presented. Different coating systems are first assessed by axial loading tests with spray-coated...

Detailed experimental data on the behavior of textured sheet metals under compressive loading is important to describe their tension-compression asymmetry. This is particularly needed for materials that exhibit a strength-differential effect, or in cases where the Bauschinger effect occurs. So far, there is no systematic work describing the third q...

Hybrid material compounds made of a metallic and a fiber reinforced component have a great potential for industrial applications, especially for ultra-lightweight structures. Advanced joining methods are necessary to bond these dissimilar material groups. The weakest point within a joined metallic and fiber-reinforced polymeric (FRP) structure is t...

The application of the X-ray diffraction method is introduced to solve the problem of inhomogeneous deformation fields in the specimens used for sheet metal characterization. In this method, strains are measured on one side of a specimen with optical measurement systems. On the other side, loading stresses on a specimen are captured with an X-ray d...

A main problem in the field of sheet metal characterization is the inhomogeneous plastic deformation in the gauge regions of specimens which causes the analytically calculated stresses to differ from the sought state of stress acting in the middle of the gauge region. To overcome this problem, application of X-Ray diffraction is analyzed. For that...

Simple shear tests are widely used for material characterization especially for sheet metals to achieve large deformations without plastic instability. This work describes three different shear tests for sheet metals in order to enhance the knowledge of the material behavior under shear conditions. The test setups are different in terms of the spec...

Interstitial free sheet steels show transient work hardening behavior, i.e., the Bauschinger effect and cross hardening, after changes in the loading path. This behavior affects sheet forming processes and the properties of the final part. The transient work hardening behavior is attributed to changes in the dislocation structure. In this work, the...

Export Date: 26 April 2013, Source: Scopus, References: Baltov, A., Sawczuk, A., A rule of anisotropic hardening (1965) Acta Mechanica, 1-2, pp. 81-92;

The room temperature strength, ductility and impact toughness of the commercial Mg wrought alloy AZ31B was investigated after equal-channel angular pressing (ECAP). It is shown, that the introduction of a beneficial texture allows a tremendous increase of ductility. An equivalent strain of ∼4.4 at 260°C processing temperature increases the elongati...

The aging behaviour after room temperature (RT) equal-channel angular extrusion (ECAE) of the pre-ECAE solid-solution treated 6060 Al alloy was investigated in wide ranges of temperature, time, and ECAE pre-strain. It is shown that high-temperature, short-time aging is most effective in improving both strength and ductility. Compared to the commerc...