Building damage recognizing method for e.g. dam, involves analyzing monitored stress conditions on changes in time interval, and comparing monitored stress conditions with stored actual condition values

摘要

The method involves monitoring stress conditions in buildings and/or building parts e.g. column (35), using acoustic waves during the use of the buildings and/or the building parts, in a permanent or intermittent manner. The monitored stress conditions are analyzed on changes in a time interval. The monitored stress conditions are compared with stored actual condition values. Ultrasonic sensors (31) are interconnected such that a pulse-train-transmission frequency is adjusted over a feedback of a transmitter and a receiver.