It is found that with the variation in stress triaxiality from the big to the small,the fracture mechanism of materials is in the sequence of cleavage,traction fracture,shear fracture with cavity,plastic shear fracture and seam,and also that when the shear fracture with cavity takes .

Numerical Analysis of the Effects of Material Parameters and Hydrostatic Pressure on Superplastic Bulging of Cavity-sensitive Materials;

Scattering of steady shear waves around a circular cavity in half-space of saturated soil;

Macro-examination and micro-examination of the characteristics of the cavity on the polished mold surface made of an advanced imported mirror plastic mould steel were carried out.

Effects of crystallographic orientation on void growth and coalescence;

Effect of principal stress ratio in plane strain condition on void damage evolution;

A method for calculating volume of void;

Holes Problem Influencing on Fracture Characteristic of 3D Braided CMC;

The Numerical Research of the Effect of the Transient Electromagentic Field Coupled to the Multiple hole Object;

Research of the hole based on r-continuous bits matching rule in immunocomputing;

The intermetallic compound and micro-voids at the SnAg/Cu interface as a function of the reflow times and their effects on the bonding reliability of solder bumps were studied.

Study on the mechanism of forming pores in the finish forging;

Research on the means of analyzing pore and fracture in core image;

Matrix porosity and permeability are low in the Ordovician carbonate reservoirs of Lunnan buried hill,but the reservoir conditions are improved by the growing of dissolved pores.