Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 5 of 5 for “"Nonlinear ultrasound"”.
-
Phononic materials as ultrasonic filters in nondestructive evaluation measurements
Nonlinear ultrasound is a nondestructive evaluation method that is sensitive to microscopic material damage, which is highly desirable information to prevent failure of critical components. The damage is correlated to the second harmonics generated in a material by a sinusoidal signal. However, …
-
Ultrasonic nondestructive evaluation of microstructures and defects of metals at different length scales
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-05-01
-
Multi-functional Holographic Acoustic Lenses for Modulating Low- to High-Intensity Focused Ultrasound
Focused ultrasound (FUS) is an emerging technology, and it plays an essential role in clinical and contactless acoustic energy transfer applications. These applications have critical criteria for the acoustic pressure level, the creation of complex pressure patterns, spatial management of the …
-
Machine learning-based non-destructive evaluation of fatigue damage in metals
… the strengths of linear ultrasonic (LU) and nonlinear ultrasonic (NLU) methods to characterize material properties and flaws at multiple length scales. Besides, a remaining useful life (RUL) estimation framework with hierarchical classifiers and S-N curves for identifying fatigue damage …