Accession Number : ADA264619


Title :   Materials for Adaptive Structural Acoustic Control. Volume 1


Descriptive Note : Annual rept. 1 Feb 92-31 Jan 93,


Corporate Author : PENNSYLVANIA STATE UNIV UNIVERSITY PARK MATERIALS RESEARCH LAB


Personal Author(s) : Cross, L E


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a264619.pdf


Report Date : 06 Apr 1993


Pagination or Media Count : 173


Abstract : This report documents work carried out in the Materials Research Laboratory of the Pennsylvania State University over the first year of a new ONR sponsored University Research Initiative (URI) entitled Materials for Adaptive Structural Acoustic Control. For this report the activities have been grouped under the following topic headings: (1) General Summary Papers; (2) Materials Studies; (3) Composite Sensors; (4) Actuator Studies; (5) Integration Issues; (6) Processing Studies; and (7) Thin Film Ferroelectrics. In material studies important advances have been made in the understanding of the evaluation of relaxor behavior in the PLZT's and of the order disorder behavior in lead scandium tantalate:lead titanate solid solutions and of the Morphotropic Phase Boundary in this system.


Descriptors :   *METALS , *COMPOSITE MATERIALS , *CERAMIC MATERIALS , *ACOUSTICS , *FERROELECTRIC MATERIALS , *PIEZOELECTRIC MATERIALS , *DIELECTRIC PROPERTIES , CONTROL , POLARIZATION , MATERIALS , DISPLACEMENT , STRUCTURES , FILMS , SOLIDS , WORK , LABORATORIES , FATIGUE , YIELD , ELECTRODES , INTEGRATION , BOUNDARIES , PHASE , ALLOYS , STANNATES , MICROCRACKING , MICROMETERS , RELAYS , APPROACH , SCANDIUM , ZIRCONATES , SOLID SOLUTIONS , ACOUSTIC EMISSIONS , TITANATES , PICTURES , SWITCHING , BEHAVIOR , ACTUATORS , GRAIN SIZE , THIN FILMS , SHAPE , PROCESSING , POLYMERS , PREDICTIONS , EMISSION


Subject Categories : Electrical and Electronic Equipment
      Acoustics
      Electricity and Magnetism
      Solid State Physics


Distribution Statement : APPROVED FOR PUBLIC RELEASE