In principle acoustic emission analysis (AEA) is not based on states or conditions but on ongoing processes, which in most cases are irreversible. That means that the method is connected with deterioration although being nondestructive itself. It can be used to identify deterioration processes, which with respect to the released energy cover a large range from cracking of concrete to wirebreaks of a post-tensioning tendon. For both extremes examples are described, results discussed and limits given. As an outlook other deterioration processes are evaluated that have the potential to be monitored by AEA.
展开▼
