Working area
The impact echo method is an acoustic testing method, where a mechanical point impact is used to generate an acoustical pulse which propagates into the material. Multiple reflections of low frequency waves between the external surface and internal reflectors are used to measure transient resonance frequencies and to evaluate structural integrity.
The impact echo method can be applied for testing of concrete and masonry structures. Objectives of the measurements are the thickness of one side accessible components, the detection of voids, delaminations and tendon ducts. Usually points were measured but at BAM it is possible to measure also lines and areas automatically with a scanning system.
The impact echo method-system is designed for concrete testing applications (thickness tendon ducts, delamination, voids).
The impactor has two hammers, which generates high or low frequencies respectively and appropriate receiver (enlarged picture).
Service
Division 8.2
Dr. rer. nat.