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ACCOMPLISHMENTS

Surface Enhancement for Improved Fatigue Life of Superalloys at Engine Temperatures. S mall B usiness I nnovation R esearch. Lambda Research Cincinnati, Ohio. INNOVATION. Low plasticity burnishing apparatus that produces deep layers of compressive surface residual stress.

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ACCOMPLISHMENTS

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  1. Surface Enhancement for Improved Fatigue Life of Superalloys at Engine Temperatures Small Business Innovation Research Lambda Research Cincinnati, Ohio INNOVATION Low plasticity burnishing apparatus that produces deep layers of compressive surface residual stress • ACCOMPLISHMENTS • Developed and demonstrated low plasticity burnishing (LPB) as an affordable means of producing deep stable compression in metallic components • Produced compressive layer essentially stable at engine operating temperatures by LPB • LPB increases finite fatigue life by an order of magnitude, can double the endurance limit, and retard existing cracks • COMMERCIALIZATION • Lambda Research created Surface Enhancement Technologies, LLC to license, market, and provide LPB • Surface Enhancement Technologies employs 3 full time staff members • NASA SBIR laid the ground work for a SBIR with NAVAIR LPB Caliper Tool • GOVERNMENT/SCIENCE APPLICATIONS • Important to NASA, the Military, and DOE for aircraft and ground based turbines and aging aircraft. Because the compression doesn’t relax at high temperatures, LPB is extremely useful; hence, this should save money for the military by extending aircraft life • Demonstrated LPB on advanced disk superalloys, assisted by NASA Ultrasafe Propulsion Project 1997 Phase II, NAS3-99116, rev. 11/01 NASA Contacts – Dr. Timothy Gabb & Jack Telesman Company Contact – Kim Bellamy Glenn Research Center Materials 3-073

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