The autofrettage analysis of high-pressure vessel of linear strength material with different yield strength in tension and compression based on the Mohr's yield criterion is dealt with.

Thispaper makesan autofrettage analysisof thick walled cylinder of material with different yield strength in tension and compression based on unified strength theory.

Study on Self-reinforcement of High Density Polyethylene(HDPE)Pipe Extruded under Compound Stress Field;

The tensile-strength and Young's modulus in cycle-direction of the expanded pipes increased by 30 % and 50 %～100 %,respectively,resulting in a self-reinforcement.

In respect to the technology and actual practice of metal injection molding(MI M),thispaper analyses different methods of self-reinforcement polymers,and the effect of injection pa-rameters on molding-filling performance.

Bilinear model in autofrettage theory and its examination;

Experimental Research on the Relaxation of Residual Stress of Autofrettaged Thick-walled Vessel under Circulation Pressure;

Numerical analysis of autofrettaged vessel for optimum overstrain extent;

HDPE induced systems with HMWPE content of 2%, 6% and 10% respectively were used to prepare two-dimensional self-reinforced pipelines via a two-dimensional compound stress field die.

co-blend modification of nonel tube plastics self-reinforced modification of nonel tube plastics and the study of multiple layer nonel tube, were given.