The stretch-twisting combination tests for composite insulators with various lengths under the basic tensile load on which different torque loads are superposed are performed.

Stress analysis of casing threads under tensile load;

Stress concentration factor of specimen with annular notch under tensile load;

To the material with a crack,the propagation path of the crack in the material under tensile load plays an important role in determining the failure forms.

his paper develops the micromechanical damage models of the two-dimensional,axisymmetrical and three-dimensional effective field for rock subjected to tensile loadings.

HBC does his possible to optimize the primary 29 MW hot-water boiler version aim at promoting property, reducing cost and fitting the limited spare, little base load boiler room of HPEC

On the basis of a given tensile load the static torque, sinusoidal tensile load and dynamic torsionwith different toques are respectively applied to compositeinsulator to simulate the stressed state of composite insulators which bear the variety of load under practical operationcondition.