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SBIR/STTR

Post Process Characterization of Friction Stir Welded Components, Phase II

Completed Technology Project

Project Introduction

Post Process Characterization of Friction Stir Welded Components, Phase II
Luna Innovations Incorporated proposes in this STTR Phase II project to continue development and validation of Luna's amplitude-dependent, nonlinear ultrasonic inspection technique applied to friction stir welded (FSW) components. The technique was successfully demonstrated in the Phase I project on samples made from aluminum-lithium alloy 2195. The proposed Phase II project will focus on refining the ultrasonic hardware and software needed to implement the technique on materials and weld geometries with near-term application in support of the Constellation launch vehicle development program. A multi-channel sensor implementation is planned. Luna's results will be compared to conventional NDE techniques currently used; this testing will be conducted primarily by collaborators at the University of Alabama, Huntsville (UAH). The project will also include a review of state-of-the-art NDE techniques applied to FSW joints and early planning for comprehensive probability of detection experiments needed to fully qualify the new technique. More »

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