LOAD-BEARING CHARACTERISTICS OF BIAXIALLY PRESTRESSED CERAMIC PLATES

摘要

Biaxially prestressed ceramic plates were subjected to transverse loading until failure occurred. The plates were l/2"x6"x6" in size, and the transverse load was applied normal to the center of a plate face over a 1-1/2" circular area. The load-bearing character¬istics of ceramic plates, under the conditions of this study, were greatly improved by biaxial prestressing, giving an optimum increase of almost 700%. An analysis of the loading of a hypothetical uniaxially prestressed beam was presented to explain the main features of the variation of load-bearing capacity with prestress. The stiffness of prestressed plates increased with level of prestress. The failure occurring in a biaxially prestressed plate, by the loading used, was characterized by the formation of a hole by the penetrating ram.