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14

The History of the Department

The Paradigm of Mechanical Engineering Evolves

The paradigm of modern mechanical engineering evolves

during the second half of the 19th century and the beginning

of the 20th century. Both engineers and scientists develop

basic mechanisms such as the one of the diesel engine and

the refrigeration engine. Thermodynamics and fluid mechanics

are perfected as scientific disciplines essential to mechanical

engineering. Institutionally, mechanical engineering outgrows

the small inventors’ workshops. It is taught at universities and

industrial enterprises set up research departments.

1877

Renaming of the Munich Polytechnic School to

Technische Hochschule München (Munich Technical

University or THM).

1880

Rudolf Diesel graduates with the best marks since

the university was established and is awarded an

honorary degree. During the first few decades of its

existence students are given a report each semester

like at a conventional school. Diplomas are only

granted for ‘outstanding achievements’ by the

department on application. Only twelve diplomas are

granted to graduates between the establishment of

the school in 1868 and 1900.

1886

Johann Bauschinger publishes his study entitled:

‘On the changes of the elastic limit and of the

strength of iron and steel caused by elongation

and squeezing, by heating and cooling and by

frequently repeated strain.’ He thus describes the

so-called ‘Bauschinger effect’ later named after

him, i.e. the change in the elastic limit of a metal or

an alloy following a deformation which determines

the direction; a workpiece is initially bent in one

direction. If it is then bent in the opposite direction

it shows a reduction in strength. This is caused by

primarily induced dislocations in the material (faults

or impurities).

1894

August Föppl, who succeeds

Johann Bauschinger, begins

to corroborate his theoretical

work in the field of technical

mechanics with practical

experiments.

1897

The ‘Föppl’ is released:

August Föppl publishes the

first part of his ‘Lectures on

Technical Mechanics’. The

standard reference work is printed in numerous edi-

tions and remains the central textbook for mechan-

ical engineering over decades. It is still published

today.

From left to right: The engineer Rudolf Diesel, director of the Maschinen-

fabrik Augsburg, Heinrich von Buz and Moritz Schröter, Professor of the

Munich Technical University, 1897

August Foppl

The Werder traction engine and bend testing machine, acquired by Johann

Bauschinger in 1870, served for over 100 years in the Mechanical Technical

Laboratory, before it went to the Deutsche Museum; photo from 1916.

View of the old Linde testing laboratory before it was handed over to the

university. In the foreground is the oxygen condenser, photo from 1901.