Holographic Interferometric Instrument for Threshold Stress Intensity

To address the OSD need to inexpensively measure the KIscc of aluminum alloys, Luminit, LLC proposes to develop a new Holographic Interferometric Instrument for Threshold Stress Intensity (HITS). This proposed HITS is based on double-exposure holographic interferometric technique to study stress corrosion cracking. The proposed method will offer accurate and fast measuring of KIscc. In Phase I, Luminit will demonstrate the feasibility of HITS by designing and assembling the experimental set-up and measuring KIscc for one or more aluminum alloys at various grain orientations. In Phase II, Luminit plans to develop a fully-functional prototype to show how HITS solves the problem of rapid and accurate measurement of KIscc of aluminum alloys. HITS will accommodate the specific needs of end users and demonstrate all relevant performance metrics so that it can be used to prepare a standard measurement procedure through a nationally recognized standards organization.