Abstract
The SAICAS method was developed for measurement of adhesive strength and shear strength of coating materials. It is also suited to continuous measurement of strength of materials from outer layer to the inside, that is, the depth profiling. In other words, it means that the strength of a very small area at an optional depth can be measured. This paper relates to results of depth profiling of ABS resin deteriorated by weathermeter. It was confirmed that the hardening layer thickness of the surface irradiated with light tends to increase with the passing of the time, while it was also disclosed that the hardening layer thickness increases not only on the irradiated side but also on the back side. At the same time it was learned that the increasing tendency of the hardening layer thickness varies with the type of the accelerating aging testing machines.
