Samuel D. Gehman

Samuel Dwight Gehman (Dec. 7, 1903 - Jun. 1, 1992) was a Goodyear physicist noted for development of a modulus-based measurement of rubber's glass transition temperature.[1][2]

Samuel D. Gehman
BornDec. 7, 1903
DiedJun. 1, 1992
NationalityUSA
Known forGlass transition temperature of rubber
Awards
Scientific career
FieldsPolymer science
InstitutionsGoodyear Tire and Rubber Company

Personal

Gehman was born on Dec. 7, 1903. He died in Akron, Ohio on June 1, 1992.[3]

Education

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

Gehman was recruited to Goodyear by Ray P. Dinsmore. 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.[6] He was an inventor of approximately 70 patents.[7]

In 1972, Gehman was listed at 10th out of the 100 top contributors to the world's rubber literature published between 1932 and 1970.[8]

Gehman retired in 1968 following 40 years with Goodyear Tire & Rubber Co.

Awards and recognitions

References
  1. "ASSOCIATIONS". AMERICAN CHEMICAL SOCIETY. April 27, 1970. doi:10.1021/cen-v048n018.p070.
  2. Baker, William 0. "SCIENTIFIC SOCIETIES AND PUBLIC PURPOSES". William O. Baker. Retrieved 3 September 2017.
  3. "Sam Gehman". myheritage.com. Retrieved 18 August 2017.
  4. "PROCEEDINGS OF UNIVERSITY COUNCIL". University of Pennsylvania. Retrieved 3 September 2017.
  5. Gehman, Samuel Dwight (1929). Reflection of Soft X-rays. University of Pennsylvania. Retrieved 3 September 2017.
  6. "Medal winners". Chem. Eng. News. 48 (4): 120–131. 1970. doi:10.1021/cen-v048n004.p120.
  7. "Patents of Samuel Gehman". Google Patents. Retrieved 3 September 2017.
  8. (page 111). Akron Beacon Journal. April 23, 1972 https://www.newspapers.com/newspage/152268209/. Retrieved 3 September 2017. Missing or empty |title= (help)
  9. "APS Fellow Archive". aps.org. American Physical Society. Retrieved 3 September 2017.
  10. "1970 Charles Goodyear Medal Goes to Samuel D. Gehman". Physics Today. 23 (4): 87. 1970. doi:10.1063/1.3022092.


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