Method and device for rating brittleness of coating substance

摘要

Brittleness of a coating substance such as a coating film that is too brittle and/or too thin to be independently removed or handled is rated on the basis of an outcome of detection of acoustic emissions which are produced when a test film piece (1) prepared by laminating a support (11) with the coating substance (12) is deformed by a compression transverse test device and detected by an AE sensor (3) attached to the test film (1) .