Re: Is there a way to measure depth?
Posted by jkaufman on Apr 14, 2011; 7:05pm
URL: http://imagej.273.s1.nabble.com/Is-there-a-way-to-measure-depth-tp3684978p3684980.html
I am following ASTM D1002 standard for my lap shear test, so the approximate area of the joint is 1 in x .5 in. There are two types of failure of the joint, adhesion failure where the adhesive splits off from the aluminum, and there is a distinct edge between the aluminum and the adhesive. The problem that I have from these failures is when the adhesive is clear or close in color to the aluminum, and therefore I cannot use thresholding to separate the two parts. Cohesion failure is much more difficult to analyze, as this is a failure of the adhesive, and often there are only small and scattered parts of aluminum visible.
I may be able to solve my problem with adhesion failure by coloring the adhesive with a black sharpie, however cohesion failure is too complex to simply color over.