Tue30Jan20184:00 pmLewis 101
Colloquium: Listening For Cracks Using Resonance And Time Reversal Techniques To Prevent Radiation Leakage From Nuclear Storage Containers
Department of Physics and Astronomy
Brigham Young University
Listening For Cracks Using Resonance And Time Reversal Techniques To Prevent Radiation Leakage From Nuclear Storage Containers
Spent nuclear fuel is often stored in stainless steel canisters in the United States. Stainless steel is susceptible to Stress Corrosion Cracking (SCC). This presentation will discuss progress on the use of the Time Reversed Elastic Nonlinearity Diagnostic (TREND) and Nonlinear Resonant Ultrasound Spectroscopy (NRUS) to determine whether SCC is present and attempt to quantify the depth of the cracking. NRUS is the measurement of the amplitude dependence of a sample's resonance frequency, which occurs because of a softening of the elastic modulus in damaged media. NRUS provides a global indication of damage in a sample. TREND employs time reversal acoustics, which focuses wave energy at various points of interest to excite localized high amplitude. The amplitude dependence of this localized energy allows pointwise inspection of a sample.