Experimental study of glass strength, against shock wave loading - Stress generation of float glass plates

Stress generation by shock wave on a 300 mm x 300 nun float glass specimen was investigated. Stresses in float glass plate increased to a maximum value impulsively, and decayed accompanied by a periodical oscillatory pattern. The stress values a so far generated can be written in the following form of time t and thickness d using 4 parameters, sigma (t, d*) = C-d sin omegat(.)exp {-lambda(t-pi/2omega)} + C-s. In these 4 parameters, C-d and C-s are shown as a factor of Mach number by normalizing with glass thickness, and lambda and omega are dependent on glass thickness.