Copyright Acoustic Agree AB
Nonlinear acoustic technologies detects
visible and hidden cracks and defects
Article, published in "Structural Health Monitoring" :
"Crack Detection in Cast Stainless Steel Valve Utilizing Nonlinear Acoustics"
"Crack Detection in Cast Stainless Steel Valve Utilizing Nonlinear Acoustics"
A material used in severe conditions in nuclear power plants is Cast Stainless Steel ("CASS"). The grain structure of Cast Stainless Steel components makes these components challenging inspecting with conventional methods. In a test Acoustic Agree AB inspected a reference block with our patented NAW®-inspection. First the reference was "fingerprinted", after fingerprinting the block was returned to taskmaster who stressed buried cracks into same block once fingerprinted. Using same NAW®-inspection of same block Acoustic Agree AB could now detect changes in the reference block, damages was detected and located. The results show clear indications of presence of damage, and the techniques localization capability is shown.
Article, published in "Svetsen" :
"Crack Detection in large tube exchangers"
"Crack Detection in large tube exchangers"
Mixing wrong chemicals in a chemical factory may impose danger. A pressurized tube exchanger transferring heat from one chemical to another requires the tube exchanger to be perfectly tight during temperature stress to receive expected stabile results. Inspecting a tube exchanger with hundreds of welded tubes efficiently for cracks is achieved with Acoustic Agree AB patented NAW®-inspection method. NAW®-inspection which enables both detection of cracks not visible in cold state as locating and evaluating damages for repair.
