University of Applied Sciences Landshut
Landshut, Germany

The University of Applied Science of Landshut with its capacity of 2600 students and 70 professors clearly focusses on the quality of teaching.Located at the gates of Landshut that is situated between Munich and Regensburg in an economic region moulded by high technology . The medieval city centre and the flourishing industry on the outskirts form an exciting and yet harmonious combination of tradition and modernity. Every 4 years, Europe’s largest historical festival, the “Landshuter Hochzeit”, attracts visitors from around the world. Wikipedia.

Time filter
Source Type

Denk J.,University of Applied Sciences Landshut | Dallmeier J.,Siemens AG | Huber O.,University of Applied Sciences Landshut | Saage H.,University of Applied Sciences Landshut
International Journal of Fatigue | Year: 2017

Notched AM50 sheet metal specimens with four different stress concentration factors are tested under quasi-static and cyclic uniaxial loading, and the results are analyzed and compared with those of unnotched specimens. Special attention is given to the formation of bands of twinned grains and the inhomogeneous local strain field in the vicinity of notches, which is measured by an in situ optical strain measurement technique. It is shown that the notch sensitivity is reduced, if bands of twinned grains occur. In the range between 500 and 1000 load cycles to fracture, the endurable load is only slightly reduced by the presence of a notch for completely reversed fatigue tests. In contrast, specimens are notch sensitive under loading conditions, where no twin formation occurs. © 2017 Elsevier Ltd

Agency: European Commission | Branch: FP7 | Program: CP | Phase: GC.SST.2013-4. | Award Amount: 22.22M | Year: 2013

Electrification of the public transport is a raising trend in Europe, and electric buses are soon expected to enter markets as one of the most interesting options for matching urban environmental targets. Electrification is driven by both economics and politics. However, although technology is not yet fully matured and ready for wide commercialisation, a large demonstration project will facilitate the market up-take of electric buses in Europe. Furthermore, as unambiguous and extensive information about overall effects of electrified bus systems and related needs for changes on infrastructure do not exist today, UITP sees its objectives and those matching perfectly, and this led UITP to build a consortium of 40 partners, who were already considering their actions along this theme, and to collectively design the 42-months demonstration project ZeEUS Zero-Emission Urban Bus Systems. ZeEUS project focus on the todays challenge in the electrification of bus system, the extension of the fully-electric solution to a wider part of the urban network. This goes through the development of electric vehicles of large capacity, and the creation of an infrastructure capable of providing the required charging energy, operated according to non-disruptive and grid-balancing principles. The ZeEUS project will cover innovative electric bus solutions with different types of electrical power-train systems. Full-electric battery-based busses will be demonstrated in five locations (Barcelona, Bonn, Muenster, Plzen and Rome), whereas plug-in hybrid or range-extender type of power-trains will be demonstrated in three sites (London, Glasgow and Stockholm). The lifetime of project ZeEUS is long enough to collect sufficient amount of statistically valid data and make comprehensive analysis to deliver meaningful lessons learned, guidelines and provide feedback to the R&D activity of manufacturers and suppliers to make technology mature for wide commercialisation.

Schwind P.,German Aerospace Center | Schwind P.,University of Applied Sciences Landshut | Suri S.,German Aerospace Center | Reinartz P.,German Aerospace Center | Siebert A.,University of Applied Sciences Landshut
International Journal of Remote Sensing | Year: 2010

The SIFT operator's success for computer vision applications makes it an attractive alternative to the intricate feature based SAR image registration problem. The SIFT operator processing chain is capable of detecting and matching scale and affine invariant features. For SAR images, the operator is expected to detect stable features at lower scales where speckle influence diminishes. To adapt the operator performance to SAR images we analyse the impact of image filtering and of skipping features detected at the highest scales. We present our analysis based on multisensor, multitemporal and different viewpoint SAR images. The operator shows potential to become a robust alternative for point feature based registration of SAR images as subpixel registration consistency was achieved for most of the tested datasets. Our findings indicate that operator performance in terms of repeatability and matching capability is affected by an increase in acquisition differences within the imagery. We also show that the proposed adaptations result in a significant speed-up compared to the original SIFT operator. © 2010 Taylor & Francis.

Loretto M.H.,University of Birmingham | Wu Z.,University of Birmingham | Chu M.Q.,University of Birmingham | Saage H.,University of Birmingham | And 3 more authors.
Intermetallics | Year: 2012

The response to deformation of samples of cast Ti46Al8Ta and Ti46Al8Nb alloys, which had been heat treated to produce similar refined microstructures, has been investigated; the refinement increases the ductility from about 0.2% found in cast HIPped samples to 0.5% for the Nb-containing alloy and up to 1.5% for the Ta-containing alloy. It has been shown that the tensile fracture surface of samples can show facetted regions characteristic of a brittle fracture and regions which appear ductile. Back scattered images and electron back scattered diffraction data indicates that there are large areas of similarly oriented alpha2 in the Nb-containing alloy and that the alpha2 is coarser than in the Ta-containing alloy. Examination of dislocation activity in the alpha2 and gamma phases in both alloys shows that deformation via slip and twinning within gamma is dominant and that limited slip of both c-component and a-dislocations can occur within alpha2. In some alpha2 grains, which are oriented so that slip of a-dislocations cannot relieve the applied stress, large regions, which are strongly strained elastically, can be imaged at the alpha2/gamma interfaces. In such cases, dislocation slip and twinning in gamma can appear to be transmitted across alpha2 via these elastic stresses, without any dislocation activity within the alpha2. Synchrotron observations aimed at defining the onset of plasticity in the alpha2 did not reveal any obvious difference in behaviour of the two alloys. Analysis shows that the oxygen-content of the alpha2 in the two alloys is very similar and analytical TEM shows that the site occupancy of the Nb and Ta within the alpha2 is only slightly different. These observations are discussed in terms of the tensile properties, in particular the ductilities, of these two alloys. © 2011 Elsevier Ltd. All rights reserved.

Kohrt C.,University of the West of England | Kohrt C.,University of Applied Sciences Landshut | Stamp R.,University of the West of England | Pipe A.G.,University of the West of England | And 2 more authors.
Robotics and Computer-Integrated Manufacturing | Year: 2013

The manufacturing industry today is still looking for enhancement of their production. Programming of articulated production robots is a major area for improvement. Today, offline simulation modified by manual programming is widely used to reduce production downtimes but requires financial investments in terms of additional personnel and equipment costs. The requirements have been evaluated considering modern manufacturing aspects and a new online robot trajectory planning and programming support system is presented for industrial use. The proposed methodology is executed solely online, rendering offline simulation obsolete and thereby reduces costs. To enable this system, a new cell-based Voronoi generation algorithm, together with a trajectory planner, is introduced. The robot trajectories so achieved are comparable to manually programmed robot programs. The results for a Mitsubishi RV-2AJ five axis industrial robot are presented. © 2012 Elsevier Ltd.

Janouch S.,University of Applied Sciences Landshut
Electronic Design | Year: 2014

Software development is now considered the most challenging part of system design. Providing a flexible and configurable hardware platform earlier on in the development cycle makes both software and hardware development less challenging while improving the overall system design. By targeting an All Programmable SoC for ADAS development, OEMs can reduce their risk and timescales, secure in the knowledge that the hardware platform is flexible and powerful enough to accommodate almost any design. As driver assistance solutions proliferate, automakers will seek new ways to exploit technology to make cars smarter, safer, and more efficient. Reducing the design burden and cost will be an increasingly important element in the evolution of ADAS. The logiADAK Zynq-7000 Automotive Driver Assistance Kit can significantly help developers of camera-based driver assistance systems to accelerate their design cycle and ultimately be even more innovative.

Dallmeier J.,University of Applied Sciences Landshut | Huber O.,University of Applied Sciences Landshut | Saage H.,University of Applied Sciences Landshut | Eigenfeld K.,TU Bergakademie Freiberg
Materials and Design | Year: 2015

The mechanical behavior of twin roll cast AM50 magnesium sheet metals was investigated via quasi-static and cyclic tests. Nine different stress or strain ratios were evaluated to cover the most technical relevant load range. Furthermore, the dependence of the mechanical behavior on loading direction was examined with the transverse direction showing the least tensile elongation and fatigue resistance. Due to the strong basal texture, twinning dominates the plastic deformation in compression of samples parallel to the sheet plane. Especially in stress-controlled cyclic tests, twinning leads to large compressive deformations. In quasi-static and strain-controlled cyclic tests, twin bands were observed and were found to be responsible for local plastic deformation. Special focus is given on the shape of hysteresis loops as well as the cyclic behavior of stress, strain, and energy density to track twinning and detwinning effects. Different possible fatigue parameters are compared concerning their evolution as a function of the fatigue life. An energy based fatigue model with weighted elastic strain energy density shows the best correlation between the lifetime prediction and the experiments. © 2015 Elsevier Ltd.

Dallmeier J.,University of Applied Sciences Landshut | Huber O.,University of Applied Sciences Landshut | Saage H.,University of Applied Sciences Landshut
Advanced Materials Research | Year: 2014

In cyclic stress and strain controlled tests, the fatigue life was determined for twin roll cast AM50 magnesium alloy sheet metals. Different stress and strain ratios were applied to cover the technical relevant load range. The investigated sheet metal shows a strong basal texture which leads to twinning in compression parallel to the sheet plane direction. Accordingly, at low cycles to failure Nf the cyclic plastic deformation is dominated by twinning and detwinning. In this study an energy based approach for lifetime estimation is presented and compared with the Smith-Watson-Topper damage model as well as with experimental test results. The energy based approach shows a comparatively high correlation at all investigated stress and strain ratios in a wide cycle range (20< Nf <1.000.000) and is adequate for the lifetime prediction at various mean stresses. © (2014) Trans Tech Publications, Switzerland.

Lean Production principles are regarded as best-practice for modern production systems. In the course of the current discussion about Industry 4.0, there is the question if and how these two approaches are compatible. This article shows that they use different tools, but have similar objectives. Despite some contradictions, they can complement each other. A case example from the field of intra logistics shows how innovative technology can serve as enabler to further optimize lean processes. © 2015, GITO Verlag. All rights reserved.

Dotzler A.,TU Munich | Riemensberger M.,TU Munich | Utschick W.,TU Munich | Dietl G.,University of Applied Sciences Landshut
IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC | Year: 2012

Uncertainty in the spatial signature of interfering signals is a major source of performance degradation in the downlink of a MIMO network. In general, the exact transmit covariance matrix of the other transmitters can not be predicted correctly in advance as the optimal strategies mutually depend on each other. In this work, we investigate two approaches for optimizing downlink transmission that are robust to interference, while operating in absence of cross channel information at the transmitter. Although they may seem unrelated, the two approaches share an interesting symmetry and are both derived from a more general minimax duality. © 2012 IEEE.

Loading University of Applied Sciences Landshut collaborators
Loading University of Applied Sciences Landshut collaborators