Cause Analysis on Unqualified DWTT of L360MB Pipeline Steel;

Cause Analysis of Unqualified DWTT of X70 Pipeline Steel;

Size, distributing, morphology and number of the MA island influencing yield ratio, yield strength and DWTT of the pipeline steel are introduced in the paper by analyzing influence of the MA island on mechanical properties in X70 and X65 pipeline steel.

Study of drop hammer impact sensitivity for big-bill explosives;

Study on equipment for drop hammer dynamic tear test;

This paper mainly deals with the key technologies involved in a guide tracked drop hammer breaker, including the working mechanism of the drop hammer, the design conception and working principle of the hydraulic control system, Indoor tests conducted on the prototype show that main parameters have met the design requirements.

Response of a TiNi end-clamped beam under dropping hammer shock

Based on the research of the working feature of impactors of hydraulic crusher with dropping hammer,this paper presents two arrangements of hydraulic power system with constant displacement pump and variable pump,compares the rational arrangements and analyses the efficiency.

The dynamic displacement ductility and ultimate load-carrying capability of three partially-prestressed concrete(PPC) beams which were unbonded,were experimentally obtained by applying impact load to their middle with dropping hammers,and the typical measurement wave curves were given.