You are being redirected because this document is part of your ASTM Compass® subscription.
    This document is part of your ASTM Compass® subscription.


    Noncontact Ultrasonic Evaluation of Metal Matrix Composite Plates and Tubes

    Published: 0

      Format Pages Price  
    PDF (280K) 11 $25   ADD TO CART
    Complete Source PDF (8.9M) 439 $70   ADD TO CART

    Cite this document

    X Add email address send
      .RIS For RefWorks, EndNote, ProCite, Reference Manager, Zoteo, and many others.   .DOCX For Microsoft Word


    Noncontacting electromagnetic acoustic transducers (EMATs) are used to generate and receive wideband pulses of ultrasound in graphite/aluminum (Gr/Al) plates and tubes. High precision velocity and attenuation measurements are used to locate defects and to determine elastic moduli. Both static global and scanned local values of the attenuation and velocity are measured by using large or small receiver EMAT separations, respectively. Nondispersive, shear horizontal, and lowest order symmetric Lamb waves are employed along with a four-transducer method which eliminates measurement uncertainties associated with EMAT lift-off variations. Elastic moduli of Gr/Al plates are determined from ultrasonic data.


    metal matrix composites, graphite/aluminum, nondestructive evaluation, electromagnetic acoustic transducers (EMATs), elastic moduli evaluation

    Author Information:

    Reed, RW
    Senior research engineer, United Technologies Research Center, East Hartford, CT

    Committee/Subcommittee: D30.04

    DOI: 10.1520/STP25955S