In view of appearing the problem of ageing impact toughness on the low side in test,the performances of 20g medium plate near three years are counted,the regression analyses for composition and performance are carried out and the inclusion,metallographic microscope and oxygen-nitrogen content are inspected.

The relationship between toughness index of synthetic diamond and crystal quality was studied by measuring with toughness index apparatus and diashape system.

Now, the examination of toughness index for synthetic diamond has already been carried out in mach enterprises of China, However, there is still a big difference in quality performance examination of synthetic diamond in comparison with international advanced level .

The relationship between toughness index of synthetic diamond and crystal quality was studied by measuring with toughness index apparatus and diashape system.

Study of the impact toughness of cemented carbide-steel 45 wear resisting composite;

Factors influencing the measuring of impact toughness of PDC by dropping objects;

Impact Toughness and Micro-Sub-Structure of a New Stainless Bearing Steel 6Cr14Mo;

Next, measured the impact strength vaules(ak ) of the titanium alloy in different hydrogen-content, and drawn the relation curve between the impact strength and the hydrogen-content.

It was found that superfine SBR powder can induce PP nucleation and improve impact strength of PP/ SBR powder composite.

The results show that the impact strength of PP/HDPE/SBS ternary blends not only related to the content of SBS but also the content of HDPE.

Establishment of regression equation between impact ductility and girth joint welding parameter of X70 pipeline steel;

Neural network between impact ductility of girth joint of X70 pipeline steel and welding parameter;

To Increase the Impact Ductility of Aluminum Alloy Used in the Doughnut;