cohesive failure

Cohesive failure is therefore a more common failure mode of APOs.

This is cohesive failure.

Another example is when someone tries to pull apart Oreo cookies and all the filling remains on one side; this is an adhesive failure, rather than a cohesive failure.

Amorphous adhesives deform easily, tending to dissipate most of mechanical strain within their structure, passing only small loads on the adhesive-substrate interface; even a relatively weak nonpolar-nonpolar surface interaction can form a fairly strong bond prone primarily to a cohesive failure.

As the reports filtered in, it became obvious that the failures were actually a cohesive failure in the surfacing rather than an adhesive failure of the marking to the surface, but they were viewed by clients as a marking adhesion failure.