Accession Number : ADA256260


Title :   A Comparison of Ultrasonic and Mechanical Test Values of the Principal Young's Modulus of Unidirectional Metal Matrix Composites,


Corporate Author : NAVAL SURFACE WARFARE CENTER SILVER SPRING MD


Personal Author(s) : Foltz, John V ; Bertram, Albert L


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a256260.pdf


Report Date : Aug 1991


Pagination or Media Count : 30


Abstract : A method of determining the fiber direction elastic modulus of a thin-ply unidirectional fiber reinforced metal matrix composite using ultrasonic plate waves is described. The results obtained by the ultrasonic technique are compared to values of Young's modulus from mechanical tests on the same materials. The agreement shows that the ultrasonic method is a reliable and essentially nondestructive way of determining Young's modulus in thin unidirectionally reinforced metal matrix composites. ultrasonic characterization, graphite/aluminum, graphite/magnesium, graphite/copper, boron aluminum, metal matrix composites, nondestructive evaluation.


Descriptors :   *MODULUS OF ELASTICITY , *METAL MATRIX COMPOSITES , TEST AND EVALUATION , METALS , MAGNESIUM , DENSITY , THICKNESS , PLATES , ALUMINUM , ULTRASONIC TESTS , BORON , COPPER , ULTRASONICS , GRAPHITE , FIBERS , NONDESTRUCTIVE TESTING , LAMINATES , FIBER REINFORCED COMPOSITES


Subject Categories : Laminates and Composite Materials


Distribution Statement : APPROVED FOR PUBLIC RELEASE