Zobrazeno 1 - 10
of 60
pro vyhledávání: '"S. D. Gehman"'
Autor:
S. D. Gehman
Publikováno v:
Rubber Chemistry and Technology. 40:532-543
Calculations and experimental results both indicated that effects of a molecular weight distribution of network chains may become evident in swelling pressure curves under favorable circumstances. More precise experiments are required to establish th
Autor:
S. D. Gehman
Publikováno v:
Rubber Chemistry and Technology. 41:977-987
The tire contour equation is derived for a flexible tire body with radial cords and a complete circumferential deflection, corresponding to the case of a radial-ply tire or a tire inflated inside a constraining cylinder. Equations are derived to calc
Autor:
S. D. Gehman
Publikováno v:
Journal of Applied Physics. 19:456-463
A study was made of creep, recovery, and permanent set for Hevea and GR‐S over a 1000‐hr. period and a range of elongations at 35°C. Creep for GR‐S is greater than for Hevea. The stress for GR‐S is considered to be supported to a greater ext
Autor:
S. D. Gehman
Publikováno v:
Rubber Chemistry and Technology. 22:105-117
A study was made of creep, recovery, and permanent set of Hevea and GR-S over a 1000-hour period and a range of elongations at 35° C. Creep of GR-S is greater than that of Hevea. The stress of GR-S is considered to be supported to a greater extent b
Autor:
S. D. Gehman, J. S. Ward
Publikováno v:
Industrial & Engineering Chemistry Analytical Edition. 3:300-304
It is desirable to devise a method for determining the dry rubber content of latex which will be both more rapid than the two trial coagulation methods and more precise than the hydrometric method. The turbidity of latex, depending upon the volumetri
Autor:
S. D. Gehman, J. H. Dillon
Publikováno v:
Rubber Chemistry and Technology. 20:827-858
After a piece of rubber undergoes a mechanical distortion, it is never the same again. The truth of this statement depends, of course, on the degree of precision and discrimination of the observations. Superficially, and for most most practical purpo
Autor:
R. B. Day, S. D. Gehman
Publikováno v:
Rubber Chemistry and Technology. 36:11-27
The general equation for the equilibrium shape of an ideally thin, flexible, inflated, undeflected cord tire is derived from the equilibrium conditions for an individual cord. Various special cases are discussed and equations are derived for the cord
Publikováno v:
Rubber Chemistry and Technology. 40:969-983
Incorporation of radioactive isotopes in small surface areas of tire treads permits wear measurements by counting before and after wear. The isotope is limited to a depth of about ten mils so that the fraction of activity worn off is appreciable in a
Publikováno v:
Journal of Polymer Science. 28:129-150
Study of the diffusion in polymers of molecules comparable in size and structure to the segments of the chain molecules is suggested as a means of securing information on structure and molecular friction forces in polymers. A convenient method for me
Autor:
S. D. Gehman, Gus Mavrigian
Publikováno v:
Rubber Chemistry and Technology. 42:1034-1039
It has been shown that the tire contour integral can only be evaluated exactly in terms of elementary functions and elliptic integrals in special cases. Approximate numerical methods, with computer programming, have been used heretofore to calculate