Ludwig Eberlein (engineer)

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Ludwig Eberlein (2012)

Ludwig Eberlein (born August 12, 1931 in Olbernhau ) is a German engineer and university professor .

Life

After attending the Goethe High School in Olbernhau, Ludwig Eberlein completed an internship at VEB Blechwalzwerk Olbernhau from 1950 to 1951 to prepare for his studies in metallurgy and metal forming. He started this in 1951 at the Bergakademie Freiberg and graduated in 1956 with the degree of Diplomingenieur. He graduated from Georg Juretzek , Professor of Metal Forming, with a thesis on rolling forces and torques when rolling on flat tracks.

From 1956 he worked as an assistant at the same institute. During this time, he set up a department for measuring mechanical, electrical and thermal parameters - including stresses and relative movements in the forming zone - for teaching and research and carried out over 50 industrial measurements. On the basis of his in-depth specialist knowledge of flow stress , he received his doctorate in 1965 on the subject of "The most important determination methods for flow curves in cold forming checked on pure aluminum and aluminum alloys". After receiving his doctorate, worked as a senior assistant from 1965.

In 1968 he was appointed lecturer for the basics of sculptural design. The extensive teaching activity associated with this was based on his research work on material flow in forging , rolling and hot extrusion .

He was appointed full professor at the TU Dresden in 1971. His extensive teaching work was a. in the 9 lesson units that are still used today in this form of compressed teaching material. In 1982 he completed his habilitation at the TU Dresden on the subject of "The model test in massive forming: A contribution to the determination of energetic parameters with model materials in cold massive forming".

In terms of research, he not only continued Franz Bredendick's work on systematic process identification and visioplastic deformation and stress determination until 1992 , but also initiated numerous developments in forming technology, for example for the hydrodynamic bulging of pipe sections or for the cross-rolling of solid and hollow bodies. While the developments in hydrodynamic bulging, now widely used and widespread as hydroforming (hydroforming) , were discontinued in the GDR in 1978 for economic reasons, the research results on cold ring rolling of symmetrical and asymmetrical roller bearing rings found widespread use. In the mid-1980s, research work on the application of numerical methods in the process design of cutting processes - such as the FEM analysis of shear cutting processes - began under his leadership . The development of the axial profile tube rolling with a rolling device integrated in a multi-spindle automatic lathe led to an economical production variant of rolling bearing rings with small dimensions. A variant of cross rolling that was newly developed from 1983 onwards, axial feed cross rolling , with the help of which the flexible production of offset solid and hollow shafts is possible, has undergone continuous development.

After Ludwig Eberlein retired in 1992, his research and development work continued under the direction of Wolfgang Voelkner .

Ludwig Eberlein lives in Bannewitz near Dresden.

Web links

Individual evidence

  1. ↑ a b Dresden School of Manufacturing Technology . In: Dieter Fichtner (Hrsg.): 50 years chair of production automation, machining and removal technology . TU Dresden, Dresden 2003, ISBN 3-86005-378-7 .
  2. ↑ Ludwig Eberlein, Ralf Zschekel: The hydrodynamic bulging of pipe sections - a new process for the production of connecting elements . In: Scientific journal of the TU Dresden . tape 27 , no. 3/4 , 1978, p. 763-776 .
  3. ↑ Ludwig Eberlein: Cold rolling of ball bearing rings is an economical alternative to machining . In: machine market . tape 100 , no. 34 , 1994, pp. 28-34 .
  4. ^ W. Arnold, Lutz Lachmann, Jürgen Leopold, Ludwig Eberlein, Fred Jesche: Application of the finite element method to the shear process . In: New Hut . tape 29 , no. 8 , 1984, pp. 306-311 .
  5. ↑ Lutz Lachmann, Ludwig Eberlein, W. Strobel: Stress determination in solid cutting using the finite element method . In: Umformtechnik . tape 19 , no. 5 , 1985, pp. 196-203 .
  6. ↑ Thomas Ficker, Andre Hardtmann, Mario Houska: Ring rolling research at the TU Dresden - its history from the beginning in the 70s to the present . In: steel research international . tape 76 , no. 2/3 . Verlag Stahleisen, Düsseldorf 2005, p. 121–124 ( online at: ringwalzen.de (PDF; 1.2 MB)).
  7. ↑ Thomas Ficker, Andre Hardtmann: Development of the axial feed cross rolling at the TU Dresden - a historical overview from the beginning of the 1970s until today . In: UTF Science . No. II / 2012 . Meisenbach Verlag, 2010 ( online at: ringwalzen.de (PDF; 3.8 MB)).
personal data
SURNAME Eberlein, Ludwig
BRIEF DESCRIPTION German engineer and university professor
DATE OF BIRTH August 12, 1931
PLACE OF BIRTH Olbernhau