Fatigue Technology, Inc.

Kevin J Dooley

Timothy Howard Johnson

James Ryunoshin Ross

Doug R Bakken

Leonard F Reid

A processing system employs a processing tool to process workpieces, for example cold working holes and/or installing expandable members into holes. Sensors sense various aspects of the processing. Information regarding performance of the process and/or materials may be stored, for example a hole-by-hole or a workpiece-by-workpiece basis, allowing validation of processing. Information also allows dynamic operation of the processing tool. Analysis of response relationships (e.g., pressure or force versus position or distance) may provide insights into the process and materials, and/or facilitate the real-time feedback including control, alerts, ordering replacement for consumable components.

Smart installation/processing systems, components, and methods of operating the same

One or more crack inhibitors can be installed to improve fatigue performance by producing stress states that prevent or inhibit crack initiation. Crack inhibitors can also prevent or retard crack growth. A mandrel can be used to radially expand the crack inhibitors to both induce compressive residual stresses and to form an interference fit between the crack inhibitor and a workpiece. The mandrel can be removed from the installed crack inhibitor, which is left in the workpiece to ensure proper stress states are maintained.

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Issaquah, WA, United States of America

Kevin J Dooley