By R.N. Thurston, Allan D. Pierce and Emmanuel P. Papadakis (Eds.)
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Additional resources for Ultrasonic Instruments and Devices IIReference for Modern Instrumentation, Techniques, and Technology
Sample text
The case histories of companies such as Zetec, Krautkramer-Branson, and Panametrics illustrate this path. The Frustrations of University-to-Market Technology Transfer Universities have created "centers of excellence" at institutions such as Iowa State to advance the state of the NDT art. These centers are supported through a mix of state and federal government, university, and industry funds. By design, the leading centers have sought active industrial sponsors, not merely for the incremental funding (which in most cases is modest) but also for the connection with industrial problems and existing solutions.
In many cases, these margins are achieved by the cost avoided by the customer from downtime, accidents or loss of use (as in the utility and aerospace industries). The price of inspection services and equipment can also be justified through lower life-cycle costs and increased equipment longevity (as demonstrated in military aircraft and ships). Many NDT firms have also achieved higher margins through the bundling of inspection services and equipment. Unfortunately, higher margins and prices have limited the size of the market for equipment and services.
The MWM is an advanced eddy current sensor that can either be scanned across a surface or surface mounted like a strain gage. In its array format, the MWM can build images of cracks, coating thickness variations, or early stage fatigue damage for metal components. The measurement grid approach uses models of the MWM to generate look-up tables for properties of interest such as coating thickness, conductivity as a function of depth from a part surface, or magnetic permeability. The MWM modeling and sensor design research began in the early 1980s.