Fachhochschule Oberosterreich F and E GmbH

Wels, Austria

Fachhochschule Oberosterreich F and E GmbH

Wels, Austria
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Lanzerstorfer C.,Fachhochschule Oberosterreich F and E GmbH
Combustion Science and Technology | Year: 2017

Sustainable energy production based on the combustion of woody biomass requires the recycling of the ash into the soil to close the nutrient cycles. The removal of the finest ash fraction separated in a second-stage de-dusting unit from the ash cycle provides a solution for eliminating volatile heavy metals. For this purpose the enrichment of these components in the finest fly ash should be maximized without incurring enrichment of the nutrients, such as Ca, Mg, K, and PO4 3–. A literature search about the enrichment of inorganic components in the fly ashes from grate-fired combustion of woody biomass revealed six sources containing enrichment factors, respectively, the concentration data required for the calculation of such factors. Extremely high variation of the enrichment factors for various elements was found. Most results from the analysis of the ashes from a district heating plant using forest residues as fuel were in the range of the published data. However, the enrichment of Cd and Zn in the finest fly ash even exceeded the published values. In view of the wide variation in the available enrichment factors, further investigations are required to optimize the enrichment of heavy metals in the second-stage fly ash. In these investigations more attention should be paid to the operation data of the combustion process, e.g., the combustion temperature and the off-gas oxygen content. © 2017 Taylor & Francis.


Burgstaller C.,Fritsch GmbH | Riedl B.,Fachhochschule Oberosterreich F and E GmbH | Stadlbauer W.,Fachhochschule Oberosterreich F and E GmbH
Annual Technical Conference - ANTEC, Conference Proceedings | Year: 2015

The aim of this work was to investigate the effects of the composition on the properties of LDPE-PA6 blends with an emphasis on the addition of EVA, because this material is often used as interlayer in packaging films. Furthermore, also the effects of additional compatibilization on the blend properties should be investigated. We found, that the addition of EVA alone shows some compatibilizing effects in blend properties, like impact strength and viscosity. Further improvements can be gained by adding prefabricated additives, like maleic anhydride grafted polyethylene and ethylene vinyl acetate, while the in situ production of such additive shows some reduced effects, likely due to some reduced accessibility of the EVA component for the in-situ grafting. Nevertheless all the investigated approaches show some effectiveness in compatibilisation, which will help to reuse such materials in other applications.


Wolfartsberger J.,Institute For Intelligenteproduktion An Der Fachhochschule Oberosterreich | Obermair F.,Fachhochschule Oberosterreich F and E GmbH | Egger S.,Institute For Intelligente Produktion | Holler M.,BIOHORT GmbH in Neufelden Osterreich tatig
Productivity Management | Year: 2017

Augmented reality describes the computer-based integration of digital, context-sensitive information with the user‘s environment in real time. Leading IT-companies are investing enormous amounts of money into further development of AR-hardware. It will probably take another few years until the technology moves mainstream. In industrial environments AR is already used for assembly and maintenance tasks on an experimental level, which may also raise some promising possibilities for end users. This article introduces an AR-application for self-assembly. In the long term, AR may replace the classic hardcopy construction manual. © 2017, G I T O Verlag. All rights reserved.


Schneider R.,Fachhochschule Oberosterreich F and E GmbH | Schlagradl T.,Fachhochschule Oberosterreich F and E GmbH | Schuller C.,Fachhochschule Oberosterreich F and E GmbH | Grunwald R.,Fronius International GmbH
HTM - Haerterei-Technische Mitteilungen | Year: 2012

Short-cycle heat treatments are typical manufacturing conditions for surface hardening processes and welding. These conditions are characterized by rapid changes of the temperature over the time, and by significant local variations of the heat treatment cycles. To measure the relationship between hardness and toughness for such conditions, a new testing method, based on a quenching dilatometer and the use of micro impact samples has been developed. The samples not only provide an impact toughness value and related micro hardness results, but also possibilities for investigations of the microstructure and fracture surface. The relationship between hardness and toughness shows a similar trend, independent from the heat treatment cycles, except from secondary hardening effects which do not occur at very short tempering cycles. The method also provides the possibility to compare the behaviour of different steels or filler materials. © 2012 Carl Hanser Verlag, M+nchen.


Burgstaller C.,Fritsch GmbH | Riedl B.,Fachhochschule Oberosterreich F and E GmbH | Stadibauer W.,Fachhochschule Oberosterreich F and E GmbH
Annual Technical Conference - ANTEC, Conference Proceedings | Year: 2013

The aim of this work was to investigate the effectiveness of industrially available additives (with different chemical nature) for compatibilization of HDPE - PA6 blends in terms of mechanical and rheological properties. Furthermore, the morphology of the samples should be assessed to get deeper insights into the interaction of the compatibilizer with the two immiscible polymers. We found, that it is possible to compatibilize immiscible blends via the addition of industrially available additives, as well as that the chemical nature of said compatibilizers and the concentration in the blend influence the various investigated properties, like impact strength and morphology.


Burgstaller C.,Fritsch GmbH | Zykaite R.,Fritsch GmbH | Klein F.,Fachhochschule Oberosterreich F and E GmbH | Stadlbauer W.,Fachhochschule Oberosterreich F and E GmbH
Annual Technical Conference - ANTEC, Conference Proceedings | Year: 2014

The aim of this work was to investigate the interfacial shear strength of basalt fiber polypropylene matrix composites via two different methods. The methods applied here were the microdebond test as a direct measurement and the use of Rule-of-Mixtures models to evaluate the macromechanical properties. We found, that it is possible to yield results from both methods, which are in good accordance. Furthermore, while the assessment of the interfacial properties via the microdebond test is a direct method, the influences of preparation and handling are obvious. The calculation of the interfacial shear strength from macromechanical test needs higher effort, but therefore also more interfaces are evaluated at once. Nevertheless, both methods can be useful for application when the respective constraints are taken into account. Copyright © (2014) by the Society of Plastics Engineers.


Fureder E.,Voestalpine AG | Voit C.,Fachhochschule Oberosterreich F and E GmbH | Puhringer J.,Voestalpine AG | Pohl M.,Ruhr University Bochum
Praktische Metallographie/Practical Metallography | Year: 2010

When it comes to characterizing modern ultra-high-strength steels, classical metallography is faced with enormous challenges In the context of etching, where several phases occur at one time and in the context of resolution, where grain sizes are in a range of a few μm. This article is to show how it is still possible, by means of classical etching technique and images made by light microscopy, to perform quantitative microstructural evaluations despite difficult preconditions. Classical etching techniques developed by Beraha and LePera, which have been in use for decades now, are deployed when contrasting conventional steels for a qualitative and quantitative evaluation and their results are being compared. Investigations with scanning electron microscopes are made to review the results. © Carl Hanser Verlag, München.


Miyama E.,Voestalpine AG | Voit C.,Fachhochschule Oberosterreich F and E GmbH | Pohl M.,Ruhr University Bochum
Praktische Metallographie/Practical Metallography | Year: 2011

Bainitic microstructures occur increasingly in modern, low-alloy multi-phase steels. A knowledge of the type of bainitic microstructure formed as a result of the alloy composition and manufacturing process used is important in enabling the required level of strength to be achieved. The morphology of the cementite precipitated plays an important role in identifying the phases present. Currently, in order to characterise and evaluate the sub-microscopic cementite formed the lengthy and expensive process of transmission electron microscopy (TEM) is used. The work presented here demonstrates that with the use of an optimised method of specimen preparation and examination, the morphology of the cementite precipitate in bainitic microstructures may also be examined using high resolution scanning electron microscopy (HRSEM) and, in addition, the quantitative characteristics such as particle length, number and distribution evaluated. Compared with TEM, this optimised method of specimen preparation and examination will in future permit statistically more accurate and thus more cost efficient investigations to be carried out on the formation ofcementite. © Carl Hanser Verlag, Münchan.


Kriegel J.,Fachhochschule Oberosterreich F and E GmbH | Auinger K.,Fachhochschule Oberosterreich F and E GmbH
Studies in Health Technology and Informatics | Year: 2015

The Ambient Assisted Living (AAL) market is still in an early stage of development. Previous approaches of comprehensive AAL services are mostly supply-side driven and focused on hardware and software. Usually this type of AAL solutions does not lead to a sustainable success on the market. Research and development increasingly focuses on demand and customer requirements in addition to the social and legal framework. The question is: How can a systematic performance measurement strategy along a service development process support the market-ready design of a concrete business model for AAL service? Within the EU funded research project DALIA (Assistant for Daily Life Activities at Home) an iterative service development process uses an adapted Osterwalder business model canvas. The application of a performance measurement index (PMI) to support the process has been developed and tested. Development of an iterative service development model using a supporting PMI. The PMI framework is developed throughout the engineering of a virtual assistant (AVATAR) as a modular interface to connect informal carers with necessary and useful services. Future research should seek to ensure that the PMI enables meaningful transparency regarding targeting (e.g. innovative AAL service), design (e.g. functional hybrid AAL service) and implementation (e.g. marketable AAL support services). To this end, a further reference to further testing practices is required. The aim must be to develop a weighted PMI in the context of further research, which supports both the service engineering and the subsequent service management process. © 2015 The authors and IOS Press.


PubMed | Fachhochschule Oberosterreich F and E GmbH
Type: | Journal: Studies in health technology and informatics | Year: 2015

The Ambient Assisted Living (AAL) market is still in an early stage of development. Previous approaches of comprehensive AAL services are mostly supply-side driven and focused on hardware and software. Usually this type of AAL solutions does not lead to a sustainable success on the market. Research and development increasingly focuses on demand and customer requirements in addition to the social and legal framework. The question is: How can a systematic performance measurement strategy along a service development process support the market-ready design of a concrete business model for AAL service? Within the EU funded research project DALIA (Assistant for Daily Life Activities at Home) an iterative service development process uses an adapted Osterwalder business model canvas. The application of a performance measurement index (PMI) to support the process has been developed and tested. Development of an iterative service development model using a supporting PMI. The PMI framework is developed throughout the engineering of a virtual assistant (AVATAR) as a modular interface to connect informal carers with necessary and useful services. Future research should seek to ensure that the PMI enables meaningful transparency regarding targeting (e.g. innovative AAL service), design (e.g. functional hybrid AAL service) and implementation (e.g. marketable AAL support services). To this end, a further reference to further testing practices is required. The aim must be to develop a weighted PMI in the context of further research, which supports both the service engineering and the subsequent service management process.

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