| 摘要 |
PROBLEM TO BE SOLVED: To provide a crack sample that can be manufactured easily in a short time, and easily generate a crack of a desired width at a desired position. SOLUTION: This crack sample 1 is produced by sticking a band-like constraint body 3 formed of a carbon fiber collection plate to the back surface of a plate body 2 of a substantially rectangular top surface made of concrete so that it crosses the plate body 2 in a diagonal shape. The crossing part of the constraint body 3 is hit from the back side of the plate body 2 with a hammer 4 or the like, thereby generating the desired crack on the front side of the plate body 2. COPYRIGHT: (C)2008,JPO&INPIT |
