Samuel D. Gehman
Samuel D. Gehman | |
|---|---|
 | |
| Born | Dec. 7, 1903 |
| Died | Jun. 1, 1992 |
| Nationality | American |
| Known for | Glass transition temperature of rubber |
| Awards |
|
| Scientific career | |
| Fields | Polymer science |
| Institutions | Goodyear Tire and Rubber Company |
Samuel Dwight Gehman (December 7, 1903 – June 1, 1992) was a Goodyear physicist noted for development of a modulus-based measurement of rubber's glass transition temperature.[1][2]
Personal[edit]
Gehman was born on December 7, 1903. He died in Akron, Ohio, on June 1, 1992.[3]
Education[edit]
In 1922, he was one of eight sophomores selected for honors at the University of Pennsylvania.[4] He completed his doctoral dissertation in 1929 on the topic Reflection of Soft X-rays.[5]
Career[edit]
Gehman was recruited to Goodyear by Ray P. Dinsmore. He made influential studies of strain crystallization via x-rays,[6] of rubber's dynamic properties,[7] and of heat transfer in rubber.[8] He managed physics research at Goodyear's research division and was renowned for developing the Gehman low-temperature twist test, which gave laboratories convenient and precise low-temperature stiffening measurements of rubber compounds.[9] He was an inventor of approximately 70 patents.[10]
In 1972, Gehman was listed at 10th out of the 100 top contributors to the world's rubber literature published between 1932 and 1970.[11]
Gehman retired in 1968 following 40 years with Goodyear Tire & Rubber Co.
Awards and recognitions[edit]
- 1965 - Fellow of the American Physical Society[12]
- 1970 - Charles Goodyear Medal from the ACS Rubber Division[13]
External links[edit]
- Audio interview with Samuel D. Gehman
References[edit]
- ^ "ASSOCIATIONS". Chemical & Engineering News Archive. 48 (18). AMERICAN CHEMICAL SOCIETY: 70–72. April 27, 1970. doi:10.1021/cen-v048n018.p070.
- ^ Baker, William 0. "SCIENTIFIC SOCIETIES AND PUBLIC PURPOSES". William O. Baker. Retrieved 3 September 2017.
{{cite web}}: CS1 maint: numeric names: authors list (link) - ^ "Sam Gehman". myheritage.com. Retrieved 18 August 2017.
- ^ "PROCEEDINGS OF UNIVERSITY COUNCIL". University of Pennsylvania. Retrieved 3 September 2017.
- ^ Gehman, Samuel Dwight (1929). Reflection of Soft X-rays. University of Pennsylvania. Retrieved 3 September 2017.
- ^ Gehman, S. D.; Field, J. E. (1939). "An X‐Ray Investigation of Crystallinity in Rubber". Journal of Applied Physics. 10 (8): 564–572. doi:10.1063/1.1707343.
- ^ Gehman, S. D.; Woodford, D. E.; Stambaugh, R. B. (1941). "Dynamic properties of rubber". Industrial & Engineering Chemistry. 33 (8): 1032–1038. doi:10.1021/ie50380a015.
- ^ Gehman, S. D. (1967). "Heat transfer in processing and use of rubber". Rubber Chemistry and Technology. 40 (1): 36–99. doi:10.5254/1.3539047.
- ^ "Medal winners". Chem. Eng. News. 48 (4): 120–131. 1970. doi:10.1021/cen-v048n004.p120.
- ^ "Patents of Samuel Gehman". Google Patents. Retrieved 3 September 2017.
- ^ "The Akron Beacon Journal from Akron, Ohio on April 23, 1972 · Page 111". No. 111. Akron Beacon Journal. April 23, 1972. Retrieved 3 September 2017.
- ^ "APS Fellow Archive". aps.org. American Physical Society. Retrieved 3 September 2017.
- ^ "1970 Charles Goodyear Medal Goes to Samuel D. Gehman". Physics Today. 23 (4): 87. 1970. doi:10.1063/1.3022092.
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