Investigation on the ultimate strength of unidirectional tapes and plain cloth hybrid laminates;

Analysis of ultimate strength and sensitivity for oil tankers based on IACS common rules;

Research development of ultimate strength of hull structure;

Wilson's simplified calculation formulation for coal pillar used widely in our country exists some limitations was induced by analysis some elements that influence limit strength of coal pillar under triaxial stresses at present.

Analyze the change law of basic performance index of mechanics such as yield strength,limit strength and extensibility under corrosion in marin climate basing on the mechanics property experiment on building material made of steel under the condition of corrosion in order to supply basis to research the anticorrosion of steel.

This apparatus can not only record automatically the maximal force on cement blocks and limit strength of cement blocks,but also print the result of experiment.

The result of the experiment indicated that the strength limit and elastic modulus of the material can increase after annealing treatment within the temperature range, but at the same time, the material became crisp and its plasticity declined remarkably.

Using thermal strength experiment to test and determine the pivotal parameters such as ultimate strength and thermal stress at the complicated condition of transient heating is very important for reliability estimation,life prediction of aerospace materials and security design of high-speed flight vehicle.

Both the tensile ultimate stresses and the relations between them are examined.

In this paper,a two dimension variation method is applied to compute tensile fracture surface fractal dimensions of a grain composite material LDPE/CaCO 3,and set the relationship of tensile fracture surface fractal dimensions and tensile ultimate stress and material filler weight content percent.