Advanced Scanning Laser Vibrometry: Applications for Basic and Applied Underwater Acoustic Transduction Research
Abstract
"This proposal, entitled Advanced Scanning Laser Vibrometry: Applications for Basic and Applied Underwater Acoustic Transduction Research, is being submitted for the purchase of a scanning laser vibrometer system. The Polytec PSV-500 is a versatile scanning laser Doppler vibrometer capable of conducting accurate vibration measurements with precise location over a full field of view. The non-contact measurement capability avoids the mass loading effects of traditional accelerometers, and allows a denser field of sampling locations. These unique capabilities allow the scanning laser vibrometer to provide enabling information to the underwater acoustic transduction engineer. The system will allow measurement of both optically reflective and non-reflective surfaces in air. In-water measurement of optically reflective surfaces will also be possible. Additional features include the ability to test complex, nonplanar surfaces, and perform time-domain analysis of transient events. The PSV-500 can measure frequencies from DC to 25 MHz, and velocities from 0.01 m/s up to 30 m/s. This will enable the measurement of tiny displacements in basic piezo-material characterization up to the large displacements expected from high power device level experiments. The purchase is intended to support a wide suite of current and future ONR, and broader DOD, funded projects at ARL. ARL proposes to use scanning laser vibromertry in basic piezo-material research, design of novel underwater acoustic transducers, array design, underwater vehicle design, and quality control / troubleshooting of fabricated transducer arrays. Many of these applications include current or future proposed student research. Examples of current work at ARL that would benefit from the Polytec PSV-500 include ONR contract N00024-12-D-6404/0481, ONR contract N00014-18-1-2447, US Army Corps of Engineers contract W912HQ-16-C-0006, DARPA SBIR contract D16PC00210 (funded to ARL via Hadal Inc.), ONR contract N00024-18-D-6401/19F8422, and PMS408 contract N00024-18-D-6401/19F8437."
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 31, 2020
- Source ID
- N000142012782
Entities
People
- Scott Brumbaugh
Organizations
- Office of Naval Research
- Pennsylvania State University
- United States Navy