Ultrasonic attenuation as an indicator of fatigue life of granite/epoxy fiber composite
James H. Williams, Beth Doll, United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch, Lewis Research Center
National Aeronautics and Space Administration, Scientific and Technical Information Branch, 1979 - Business & Economics - 20 pages
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2.0 MHz versus American Society ASTM STP 636 attenuation and velocity Attenuation at 2.0 attenuation measurements Composite Laminates compressive fracture stress cycles to failure cycles to fracture failure for transfiber Fatigue Behavior Fatigue Damage Fatigue of Filamentary fatigue strength Fatigue Tests fiber epoxy composites Filamentary Compos Filamentary Composite Materials Graphite Epoxy Composites graphite fiber composites graphite fiber epoxy group velocity Hikata increase in attenuation INDICATOR OF FATIGUE Journal of Composite K. J. Bowles K. L. Reifsnider K. N. Lauraitis MHz and 2.0 MHz versus cycles NASA neper/cm Nondestructive Evaluation Notched October Output Performing Organization precure temperature prefatigued static compressive R. D. Adams Reifsnider and K. N. Reinforced Composite shear strength snider and K. N. Society for Testing specimens from laminate static compressive fracture static fracture stress static strength Tensile Strength Testing and Materials transfiber compression-compression fatigue uation Ultrasonic Attenuation unidirectional graphite epoxy velocity and attenuation versus fatigue cycles