EXPERIMENTAL INVESTIGATION OF MECHANICAL
VIBRATIONS OF THE ELEMENTS OF COMBUSTIBLE FOREST MATERIALS
A. M. Grishin and A. N. Golovanov

UDC 533.6.011.6

Vibrations of elements of combustible forest materials 
(CFMs) in a laminar air flow are studied experimentally using optical-fiber 
facilities. The elastic properties of combustible forest materials 
- the Young modulus and the rigidity, whose values in the limiting 
cases are in satisfactory agreement with the known data - are 
determined. It is stated that vibrations of combustible forest materials 
can affect their heat and mass exchange with the environment. The 
results obtained made it possible to evaluate the limiting value of 
the equilibrium velocity of wind in the forest cover at which a crown 
forest fire can originate or die down.

Tomsk State University, Tomsk, Russia; email: fire@fire.tsu.tomsk.su. 
Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 74, No. 4, pp. 
65-69, July-August, 2001. Original article submitted September 11, 2001.

JEPTER7492020018
JEPTER749208