NASA Goddard Space Flight Center

Buckling of Tin Whiskers

Where FB = Buckling force
ESn = Young’s Modulus of Tin = 30 GPa
I = Inertia
L = Length of the whisker
d = Diameter

Reference from “Mechanics of Materials” 2nd edition by F.P. Beer, and E. R. Johnston, JR.

These viewgraphs show the computations used for quantifying the buckling force of a whisker growing against an elastic surface. The buckling force is described by Euler’s formula, for a rod with one end fixed and the other end pinned:

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Responsible NASA Officials:

   Michael Sampson/NASA GSFC Code 306
   Dr. Henning Leidecker/NASA GSFC Code 562
Additional Researchers: 

   Jong Kadesch/Orbital Sciences Corp.
   Jay Brusse/QSS Group, Inc.

Last Updated:

April 20, 2005

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