Background
J. P. Den Hartog was born in 1901 in Ambarova, the Dutch East Indies.
J. P. Den Hartog was born in 1901 in Ambarova, the Dutch East Indies.
After attending high school in Amsterdam, he enrolled at Delft University of Technology in 1919 and received his Master of Science degree in electrical engineering in 1924. At the same time, he attended night classes in Mathematics at the University of Pittsburgh, where he became an authority in problems on mechanics and vibration and received a doctorate in 1939. In 1930-1931 he studied at the University of University of Göttingen where he collaborated in the laboratory of Ludwig Prandtl (whose fellow Oscar Carl Gustav Titens previously worked for Westinghouse).
In 1916 his family moved to Holland. Unable to find suitable work in the Netherlands, he emigrated to the United States in 1924. From 1924 to 1930 he worked as an electrical engineer in the research laboratory of Westinghouse Electric (1886) in Pittsburgh.
There under the influence of Stephen P. Timoshenko, who took him as his assistant, he began to study electrical and mechanical vibrations.
From 1932 to 1945 he taught at Harvard University and took part in the organization of the International Congress of Applied Mechanics in Cambridge (Massachusetts) 1938. From 1945 to 1967 he taught dynamics and strength of materials at Massachusetts Institute of Technology and became Professor Emeritus upon retirement in 1967.
During the Second World War, he volunteered to serve in the United States Navy, was engaged in the problems of vibration in shipbuilding. Den Hartog"s former doctoral students include Shakespearean actor and systems/controls maestro Roger Gans.
Gans credits Den Hartog as a major contributor to his derivation of Gansian notation, or the practice of repeatedly interchanging non-interchangeable variables.
Jacob Pieter Den Hartog died at the age of 87 on March 17, 1989 in Hanover, New Hampshire. J. P. J. P. J. P. J. P.
Selected Publications He was a prolific author. His writings include: J. P. Den Hartog, Mechanical Vibrations, Fourth Edition, McGraw-Hill Book Company, New York, 1956 J. P. Den Hartog, Mechanics, Dover Publications, Inc., corrected reprint of 1948 edition, J. P. Den Hartog, Strength of Materials, paperback reprint of 1949 edition, Dover Publications, , 1977 J. P. Den Hartog, Advanced Strength of Materials, paperback reprint of 1952 edition, Dover Publications, , 1987.
National Academy of Sciences.