Laser-Ultrasonic Characterization of Electrodeposited Chromium Coatings
Abstract
Chromium coatings were electrodeposited onto steel substrates, under controlled conditions. A pulsed laser generated ultrasonic waves in the specimen, and a Michelson interferometer detected the ultrasonic waves at the surface. Signal processing techniques were used to obtain the surface wave velocities, and the various modes are discussed. Conventional piezoelectric techniques were also used for generation and detection of bulk wave velocities to correlate with the surface wave results. A difference technique was used to obtain the bulk measurements: time transit and thickness were measured before and after chromium plating and the velocities evaluated from the respective differences of the data thus obtained.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1999
- Accession Number
- ADA362120
Entities
People
- Bryon Knight
- Jeffrey Braunstein
- Joseph F. Cox
- Julius Frankel
Organizations
- United States Army Armament Research, Development and Engineering Center