Optical-fiber interferometer measures wave amplitude without contacting specimen surface. System contains remote detector head. Head includes beam splitter that divides input beam and recombines output beams, while spatial filter filters interference pattern at beam-splitter output; and lens focuses this on detector. Beams focused on specimen surface to record acoustic signals.
Interferometer for Measuring Acoustic Signals
NASA Tech Briefs ; 8 , 4
1985-04-01
Sonstige
Keine Angabe
Englisch
Interferometer Detects Acoustic Emissions in Composites
NTRS | 1985
|Measuring automotive vibration with a scanning laser interferometer
Kraftfahrwesen | 1989
|Measuring automotive vibration with a scanning laser interferometer
Tema Archiv | 1989
|Redundant measurements using laser interferometer on coordinate measuring machine
Kraftfahrwesen | 2004
|