Application of Acoustic Emission on fatigue Damage of steel Bridges

Acoustic emission technique was used during static load of steel part of bridge containing fatigue cracks. Next step of research program was monitoring of fatigue cracks on real steel bridge during loading by heavy trucks. Parallel to this experimental investigation the acoustic emission was used to monitor steel railway bridge. This bridge is over 109 years old and basic construction was done by riveting. Results of AE measurements have shown very good results documented damage processes with crack behaviour during cyclic loading, The obtained acoustic emission results were confirmed by other NDT methods used also for this experiments.