Restoration of spot in precise spot measurement;

Optical Spot and Convergence Measurements: Instrumentation and Technical Requirement;

Investigation on oxygen-equilibrium effects of laser ignition of energetic materials;

Effect of optical parameters of solid propellant on the laser ignition delay;

Laser ignition of NEPE propellant;

It showed that in contrast to single spot laser welding,twin spot laser welding can improve the weld surface quality,and increase the weld width,the thresholds.

Microstructure and mechanical properties of twin spot laser welding of 5052 aluminum;

Single spot laser and twin spot laser welding of aluminum alloy,with or without wire feeding,were carried out.

In this paper, laser spot welding was used to join a NdFeB permanent magnet to an SPCC (steel plate cold commercial) steel in an effort to achieve joining of magnet/steel dissimilar materials with high speed and quality, with the joint formation mechanism, hardness, strength, and fracture behavior analyz.

However, laser spot welding of aluminum has some problems, such as instability, porosity, crack, crater, and low tensile strength.

In the field of laser processing, laser spot welding technology gradually becomes the focus of people s attention for its high-precision and high-efficiency, as a new type technology.