Dynamic stress concentration factor in the strip plate with fillet

Dynamic and static stress concentration factors alpha(D max) and alpha(s) generated at a fillet part are observed by photoelastic method and the comparison between two different factors is carried out. Next, the reflection coefficient A is calculated using the height of incident and reflected waves measured by the strain gauge. As the result, following relationship alpha(D max) = ( 1+ A)alpha(s) is derived experimentally. The equation shows that the maximum dynamic stress concentration factor alpha(Dmax), is easily calculated using the static stress concentration factor alpha(S) and the reflection coefficient A.