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December 31, 2009
NVH testing for brake system quality now feasible on the plant floor with the NDT-RAM Systems

Normally occurring brake noise causes millions of dollars in unnecessary warranty repairs each year.  THE MODAL SHOP, INC. helps solve this problem for many brake part manufacturers with its Noise, Vibration and Harshness (NVH) testing system for use in production.

This nondestructive system tests calipers, anchors and disks using the Resonant Acoustic Method (NDT-RAMTM). By measuring, reporting, and archiving natural frequencies of brake components, it ensures NVH requirements are met on every piece. NDT-RAM works by impacting a brake component with a controlled, repeatable force and measuring the frequency response via an industrial microphone. With typical throughput rates of approximately three seconds per part, 100% quality inspection is easily attainable.

In addition to decreased part noise and increased manufacturing consistency, the test system features automated software reporting. This allows for part-specific information to be automatically or manually input on a per part basis. Pertinent information such as serial number, model number, lot data, weight and more can be entered. The NDT-RAM method provides 100% resonant inspection with no chemicals, magnetizing, part preparation or special handling required, plus NVH data is collected right in the production environment.

“By reducing the noise made by brake parts, the consumer has increased confidence in the brand and is less likely to seek the expense of unneeded repair work,” said Gail Stultz, NDT Product Group Manager.

To aid each company in gauging its individual benefit of NVH production line testing, THE MODAL SHOP, INC. provides free parts tests and reports, as well as system rentals for factory trial use.

In addition, significant trade-in credit is available for customers with competitive systems. For free parts testing, specification sheets, application data, competitive product upgrades, pricing, or to schedule a rental or demonstration, please contact THE MODAL SHOP, INC. at (800) 860-4867 by e-mail at or online at MODAL SHOP, INC is located at 3149 E. Kemper Road Cincinnati, OH 45241-1516.

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