Copyright Acoustic Agree AB
-Application examples from real world NAW®-inspections.
Forged crankshaft, dragracing car.
A Pro Mod dragracing car produces 3-5000hp to run a quarter mile in 5 seconds. A supercharged 526 cui (8.6 liters) hemi V8 running on methanol puts an enormous stress on the crankshaft transferring all the power from the pistons to the wheels. To handle cost and time in preparing for a 5 second race inspecting state of engine parts such as the crankshaft before a race is essential having the engine in a known good condition. One inspection method to check health of engine parts is NAW®-inspection (Non-linear Acoustic Waves) locating and estimating severity of buried cracks.
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Manganese crossings, railway.
For intense trafficed railway crossings steel with high manganese content is used to cope with wear and tear. Grain structure of steel with high manganese content causes difficulties for conventional inspection methods as linear ultra sound. With new technologies as non linear acoustics collecting more information about the details health as cracks, containments, weakness and other deficits is enabled.
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Turbine blades, jet engines and gas turbines.
With a turbine engines rotational speed of 2000-5000 rpms the stress load on the turbine blades is immense. Non linear acoustic (NAW®) is a inspection method detecting buried growing cracks in blade, foot, head and mounting slot securing a safe operation of the turbine.
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Weldjoints, railway.
There are many qualification procedures for producing weld joints but no matter welding method the heat treatment and added materials in the weld operation changes the area of the weld joint. Non linear acoustic (NAW®) is a inspection method measuring weakening of area and can follow the weld joint during its life cycle to the decide when the weld joint is to be restored to required strength.
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