Passive Structural Health Monitoring (SHM) With a Sparse Sensor Set
Abstract
Passive Structural Health Monitoring (SHM) With a Sparse Sensor SetAcoustic Structural health monitoring is often done using short-range ultrasonic methods.Information about structural defects are also embedded in the lower/mid-frequency passivevibrations of structures. However, detailed models and dense sampling is typically needed foridentifying a structural perturbation and localization of the defect requires further high resolutioninvolving accurate modeling and dense sampling. Here we develop the theory and signalprocessing necessary to utilize an existing sparse set of sensors on a structure to passively performSHM utilizing the concept of the Acoustic Digital Twin combined with Adaptive Matched FieldProcessing. The methodology will be verified by model experiments.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- May 08, 2020
- Source ID
- N000142012478
Entities
People
- W. A. Kuperman
Organizations
- Office of Naval Research
- United States Navy
- University of California, San Diego