GRAPHIC-ANALYTICAL METHOD FOR DAMAGE DEPTH
DETERMINATION BASED ON NATURAL FREQUENCIES
AT CANTILEVER BEAM
The paper presents research results of authors in determining of the
damage depth for a cantilever beams by using natural frequencies. A graphicanalytical
method is proposed which permit to evaluate the damage depth and
localize the position of the damage on the beam length. The method is based
on results obtained from the numerical modal analysis for the first ten modes of
vibration. Experimental tests have confirmed the method and the results have
application in non-destructive examination based on vibration analysis.
Keywords: natural frequencies, defect, depth, bar mixer
Cuvinte cheie: frecvenţe proprii, defect, adâncime, bară încastrată
