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NDT-RAM™ Automated System
NDT-RAM™ Automated System

News & Events

August 4, 2008
No Cost Feasibility Studies for Resonant Inspection NDT

THE MODAL SHOP, INC. offers free parts tests to determine the feasibility of quality assurance testing via the Resonant Acoustic Method (NDT-RAMTM).  Resonant inspection is commonly used to test for a number of flaws in powder metal, cast (including ductile iron), ceramic, forged and stamped parts.  The parts test allows manufacturers to send good and bad parts in for feasibility testing by The Modal Shop’s experienced NDT engineers and receive a detailed written report on the results prior to any capital investment.

The trial parts test is an ideal way for manufacturers to explore quality assurance testing on powder metal and cast parts via resonant inspection at no cost.  The benefits that can be realized from a successful parts test and installation of an NDT-RAM system include fast 100% inspection of parts prior to shipment to remove human interpretation errors from the quality assurance process, reduce scrap costs by minimizing false rejects, have a de facto process monitoring system in place that objectively measures part quality of the parts, and eliminate quality related recall and resorting costs.

The NDT-RAM inspection technique uses an instrumented impact hammer and a microphone for quality assurance testing metal parts and composites via the acoustic signature of components in a quick, cost-effective manner, allowing for fully automated quality control testing of 100% of parts in a production environment.  With no part preparation required, this technique can successfully identify internal and external flaws due to cracks, voids, nodularity, material density, dimensions, bonding and missed manufacturing processes.

NDT-RAM is ideal for manufacturers or users of metal parts that have substantial inspection cost, require 100% inspection, produce or use safety-critical parts, have substantial scrap costs due to false rejects, or simply want to improve their part quality.  It can be used for the inspection of parts used in a variety of industries, including automobiles, aircraft, consumer goods, medical devices and other metallic products.

For more information about NDT-RAM or other process monitoring systems that can benefit your operations, contact THE MODAL SHOP, INC., 3149 E. Kemper Road Cincinnati, OH 45241-1516,, (800) 860-4867, Fax (513) 458-2172 or e-mail:

NDT-RAM is trademark of The Modal Shop, Inc.