5.3.3.3 Tensile
strength
The low tensile strength, which can often
be 20 % less than the bending strength, and
the tendency to brittle breakage (see Figure 80) of ceramics
require that tensile stress should be avoided or minimised,
or at least that the stress distribution should be calculated
as accurately as possible. This does not entirely exclude
the possibility that, for instance, components such as open-air
insulators used for high voltage power transmission can be
successfully, if inappropriately for ceramics, used under
conditions of tensile stress.
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