Accession Number : AD0475727


Title :   SELECTION TECHNIQUES FOR BRITTLE MATERIALS. VOLUME I. EVALUATION OF ZRB2 - MOSI2 AS A STRUCTURAL REFRACTORY CERAMIC BODY.


Descriptive Note : Final technical rept. Jul 63-Apr 65,


Corporate Author : BELL AEROSYSTEMS CO BUFFALO NY


Personal Author(s) : Anthony, Frank M ; Marcus, Leon ; Mistretta, Andrew L


Report Date : Sep 1965


Pagination or Media Count : 277


Abstract : The broad aspects of the problems involved in the structural use of brittle materials were considered and areas which most strongly influence selection of such materials were investigated. A direct evaluation technique was developed for sonic leading edge applications. A rational design philosophy was formulated and applied to the design of simple structural elements and leading edge configurations for which analytical strength predictions were in good agreement with experimental results. Characterization studies of observable material characteristics permitted the assessment of similarity of material produced at different times and in different configurations. Correlations of these observables with strength formed the basis for material selectivity which, along with proof testing, was shown to have great potential for reducing variability of material strength and thus providing increased design allowables for existing materials. A process for the manufacture of complex Boride Z leading edge segments was established. (Author)


Descriptors :   *BRITTLENESS , NONMETALS , REFRACTORY MATERIALS , ZIRCONIUM COMPOUNDS , BORIDES , MOLYBDENUM COMPOUNDS , SILICIDES , SINTERING , ELASTIC PROPERTIES , X RAY DIFFRACTION , ELECTRON BEAMS , RADIOGRAPHY , CONFIGURATIONS , PERFORMANCE(ENGINEERING) , ULTRASONIC RADIATION , FAILURE(MECHANICS) , THERMAL ANALYSIS , TABLES(DATA) , MICROSTRUCTURE , RADOMES , STRUCTURAL PROPERTIES , INSTRUMENTATION , CHEMICAL ANALYSIS


Subject Categories : Ceramics, Refractories and Glass


Distribution Statement : APPROVED FOR PUBLIC RELEASE