Automated Non-Destructive Test Resonant Inspection System

An industrial electric impact hammer strikes parts traveling along a conveyor with a known and repeatable force, and a microphone measures the acoustic response from the part.  Input force and response spectra are measured by the controller, which digitizes the signal, and performs FFT analysis.  NDT software compares results against reference criteria limits and either rejects or accepts the part accordingly.

All of the NDT-RAM systems are ideal for 100% inspection requirements of manufacturers or users of powder metal, metal injection molded (MIM), castings (including ductile iron), forgings, stampings or welding. NDT-RAM provides screening for cracks, chips, holes, out-of-tolerance dimensions, variations in hardness, residual stress, bonding failures and heat-treating processes. Manufacturers that have significant inspection costs (either material or labor costs), produce or use safety-critical parts, have substantial scrap costs due to false rejects or simply want to improve their part quality can benefit from NDT-RAM technology.