Atroshenko Svetlana came to visit HIT and gave academic lectures to students.

(Essay: Zhen Liang)
The dynamic behavior of materials is an area of study at the confluence of many scientific disciplines. The processes that occur when bodies are subjected to rapidly changing loads can differ significantly from those that occur under static or quasi-static situations. The techniques for producing shocks waves are as follows: explosive devices, gas guns, electric guns, radiation devices, et al. From the lecture one can draw the following conclusions:

Techniques for producing shock waves are: explosive devices; gas guns; electric guns; radiation devices; techniques for measurement shock parameters. Different kinds of high strain rate deformation are: uniaxial shock loading; spherical action of waves; laser loading; explosion of conductor; magnetic pulse loading.

Microstructural aspects are of utmost importance in the dynamic failure of materials. Dynamic failure was divide into three classes: Dynamic failure by tension; spalling (uniaxial strain state) and uniaxial stress state. Dynamic failure by shear; shear instability is the precursor of this failure mode. Dynamic failure by compression; ceramics, rocks and brittle metals (cast iron, intermetallic compound) are especially prone to failure under compressive loading.

From nartensite transformation in metals induced shock loadingone can draw the following conclusions: