NDT BY ACOUSTO-OPTICAL IMAGING

A NEW TECHNIQUE, TERMED ACOUSTO-OPTICAL IMAGING, WHICH PROVIDES VISIBLE IMAGES OF FLAWS IN OPTICALLY OPAQUE OBJECTS IS DESCRIBED. THE DEVICE USES ULTRASONIC ACOUSTIC WAVES TO LOOK INSIDE THE OPTICALLY OPAQUE OBJECTS. THE ULTRASONIC WAVES ARE MADE TO ENTER THE BODY TO BE INSPECTED AND, UPON EMERGENCE FROM THE OBJECT, INTERACT WITH LIGHT FROM A LASER RESULTING IN A REAL-TIME OPTICAL IMAGE OF WHAT THE SOUND WAVES HAVE "SEEN." THE DEVICE HAS OVERCOME MANY PROBLEMS, SUCH AS ELIMINATING THE USE OF PICKUP TRANSDUCERS, ASSOCIATED WITH ACOUSTIC IMAGING DEVICES. THIS PAPER DESCRIBES THE DEVICE, THE PRINCIPLE OF OPERATION OF THE TECHNIQUE AND PRESENTS THE RESULTS OF LABORATORY EXPERIMENTS WHICH DEMONSTRATE THE APPLICATION OF THE DEVICE TO NONDESTRUCTIVE TESTING. /AUTHOR/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00255327
• Supplemental Notes:
  • Vol 29, No 5, PP 112-116, 8 FIG, 10 REF
• Authors:
  • Aprahamian, R
  • Bhuta, P G
• Publication Date: 1971-5

Media Info

• Serial:
  • Materials Evaluation
  • Publisher: American Society for Nondestructive Testing
  • ISSN: 0025-5327

Subject/Index Terms

• TRT Terms: Acoustic measuring instruments; Acoustics; Defects; Detection and identification; Detectors; Fault location; Imagery; Lasers; Nondestructive tests; Optical measurement; Optics; Ultrasonic tests; Ultrasonics; Waves
• Old TRIS Terms: Acoustic measurement; Images
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00217118
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 29 1971 12:00AM