Philipp Hein

Chemnitz University of Technology

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Haibing Shao

Helmholtz Centre for Environmental Research

Olaf Kolditz

Helmholtz Centre for Environmental Research

Agnes Sachse

Helmholtz Centre for Environmental Research

Angelika C. Bullinger

Chemnitz University of Technology

Joël Wilsius

ArcelorMittal (France)

Max Bernhagen

Chemnitz University of Technology

Anke Bucher

Leipzig University of Applied Sciences

Yoann Dahan

Duval County Public Schools

Yvan Chastel

Centre de Mise en Forme des Matériaux

Patrick Duroux

ArcelorMittal (France)

Cooperative Institutions

Helmholtz Centre for Environmental Research

Friedrich-Alexander-Universität Erlangen-Nürnberg

Chemnitz University of Technology

Centre National de la Recherche Scientifique

Leipzig University

TU Dresden

Centre des Matériaux

École Nationale Supérieure des Mines de Paris

University of Stuttgart

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Impact factors on the long-term sustainability of Borehole Heat Exchanger coupled Ground Source Heat Pump System

EGUGA (2016)

Haibing Shao Philipp Hein Uwe–Jens Görke Anke Bucher Olaf Kolditz

Coefficient of performance

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Hydroforming of sheet metal pairs for the production of hollow bodies

Revue de Métallurgie (2000)

M. Vahl Philipp Hein S. Bobbert

The hydroforming technology is well-known since several years and undergoes an extremely dynamic development in automotive applications, especially in Germany and the United States. The hydrofoming of sheet metal pairs is still at a pre-industrial stage. This publication presents the process and draws attention to some particular results of research work. Principal working directions for investigations, regarding the transfer of the hydroforming process for sheet metal pairs to industry are mentioned.

Hydroforming

10.1051/metal:2000111

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Citations (9)

Technically exploitable geothermal energy by using Borehole Heat Exchangers: A revisit of the Cologne case

EGU General Assembly Conference Abstracts (2017)

Haibing Shao Philipp Hein Anke Bucher Olaf Kolditz

Geothermal heating

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Procedure for the Experimental Determination of a Forming Limit Curve for Usibor 1500 P

HAL (Le Centre pour la Communication Scientifique Directe) (2007)

Yoann Dahan Yvan Chastel Patrick Duroux Joël Wilsius Philipp Hein

USIBOR 1500 P® is a coated C-Mn steel, micro-alloyed with boron, with excellent processing properties in hot stamping, both in terms of formability, quenchability and surface protection, and leading to superior mechanical properties on the formed part. Arcelor Research is developing a numerical tool to support the feasibility analysis and to optimize the design of hot stamped parts made of USIBOR 1500P®. Among the numerous bricks of such a simulation methodology, formability data of the material are of primary importance as the forming analysis relies on them to make a decision in terms of feasibility. Up to now, there was no experimental procedure available in literature to determine the forming limits of hot stamping material, taking into account the specificities of this process. This paper reports about the research performed in this field. First, an efficient experimental set-up which allows varying all the desired process conditions has been developed. Several hundred Nakazima hot stamping tests have been carried out for various process parameters (stroke, velocity, friction and heat exchange) and blank para-meters (temperature, thickness and shape). The third step consisted in developing and vali-dating an accurate analysis scheme to determine the critical strain values based on the Bragard method. Finally, the critical strain values have been confirmed and comparisons with industrial parts for various process conditions have been performed. In this paper these two last steps are mainly presented.

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Wissensbasierte Simulation innovativer Prozeßketten

Zeitschrift für wirtschaftlichen Fabrikbetrieb (1998)

Thomas Menzel Philipp Hein H. Gfirtner

Abstract Mit der Einführung neuer Fertigungstechnologien wird ein hohes Potential zur effizienteren Herstellung hochwertiger Produkte verbunden. Dennoch hemmen hohe Investitionskosten und das mangelnde Wissen über die wirtschaftliche Effizienz des neuen Fertigungsprozesses oftmals die schnelle Umsetzung. Diesem Defizit an Wissen soll durch ein Simulationssystem entgegengewirkt werden, mit dessen Hilfe eine virtuelle Prozeßkette simuliert und hinsichtlich ihrer Nutzeffekte vorab bewertet werden kann.

10.1515/zwf-1998-0314

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Hydroforming of sheet metal pairs

Journal of Materials Processing Technology (1999)

Philipp Hein Frank Vollertsen

Hydroforming

10.1016/s0924-0136(98)00347-1

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Citations (59)

Quantification of exploitable shallow geothermal energy by using Borehole Heat Exchanger coupled Ground Source Heat Pump systems

Energy Conversion and Management (2016)