scholarly journals STUDY OF STEEL BARRIER SURFACE AFTER HIGH-SPEED EXPOSURE OF W AND TIC POWDERS

2021 ◽  
pp. 23-27
Author(s):  
E. V. Petrov ◽  
V. S. Trofimov ◽  
V. O. Kopytskiy
Keyword(s):  
Mechanical Properties ◽  
Shock Wave ◽  
High Speed ◽  
Physical And Mechanical Properties ◽  
High Speed Photography ◽  
Shock Wave Loading ◽  
Wave Loading ◽  
Barrier Material ◽  
Barrier Surface ◽  
Powder Particles

The surface layer of an obstacle made of U8 steel is investigated after high-speed exposure to a flow of powder particles. After analyzing the frames of high-speed photography, the average velocities of movement of particles of tungsten and titanium carbide powders were determined. It is shown that the shock-wave loading of the barrier material and the effect of particles accelerated by the explosion energy provide a change in the physical and mechanical properties of the surface and the volume of the steel barrier material.

Effect of shock-wave loading on the internal microstructure and mechanical properties of fine-grained copper

2010 ◽  
Vol 46 (6) ◽  
pp. 719-723 ◽  
Author(s):  
O. N. Ignatova ◽  
I. I. Kaganova ◽  
A. N. Malyshev ◽  
A. M. Podurets ◽  
V. A. Raevskii ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Shock Wave ◽  
Shock Wave Loading ◽  
Wave Loading ◽  
Fine Grained ◽  
Microstructure And Mechanical Properties

Microstructure and Mechanical Properties After Shock Wave Loading of Cast CrMnNi TRIP Steel

2016 ◽  
Vol 47 (10) ◽  
pp. 4922-4932 ◽  
Author(s):  
Ralf Eckner ◽  
L. Krüger ◽  
C. Ullrich ◽  
D. Rafaja ◽  
T. Schlothauer ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Shock Wave ◽  
Trip Steel ◽  
Shock Wave Loading ◽  
Wave Loading ◽  
Microstructure And Mechanical Properties

scholarly journals Experimental study of mechanical properties of liquids under shock wave loading

2016 ◽  
Vol 774 ◽  
pp. 012051
Author(s):  
I A Bannikova ◽  
S V Uvarov ◽  
A N Zubareva ◽  
A V Utkin ◽  
O B Naimark
Keyword(s):  
Mechanical Properties ◽  
Shock Wave ◽  
Experimental Study ◽  
Shock Wave Loading ◽  
Wave Loading

The effect of shock-wave loading on transformation temperatures, elastic and anelastic properties of β′ 1 Cu-Al-Ni martensitic single crystals

2002 ◽  
Vol 82 (12) ◽  
pp. 2419-2440
Author(s):  
S. Golyandin ◽  
S. Kustov ◽  
S. Nikanorov ◽  
K. Sapozhnikov ◽  
A. Sinani ◽  
...  
Keyword(s):  
Shock Wave ◽  
Single Crystals ◽  
Shock Wave Loading ◽  
Wave Loading ◽  
Transformation Temperatures

scholarly journals Prey Capturing Dynamics and Nanomechanically Graded Cutting Apparatus of Dragonfly Nymph

Materials ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 559
Author(s):  
Lakshminath Kundanati ◽  
Prashant Das ◽  
Nicola M. Pugno
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
High Speed ◽  
Prey Capture ◽  
High Speed Photography ◽  
Sensory Organs ◽  
Dragonfly Nymph ◽  
Drag Forces ◽  
Predatory Insects ◽  
Dragonfly Nymphs

Aquatic predatory insects, like the nymphs of a dragonfly, use rapid movements to catch their prey and it presents challenges in terms of movements due to drag forces. Dragonfly nymphs are known to be voracious predators with structures and movements that are yet to be fully understood. Thus, we examine two main mouthparts of the dragonfly nymph (Libellulidae: Insecta: Odonata) that are used in prey capturing and cutting the prey. To observe and analyze the preying mechanism under water, we used high-speed photography and, electron microscopy. The morphological details suggest that the prey-capturing labium is a complex grasping mechanism with additional sensory organs that serve some functionality. The time taken for the protraction and retraction of labium during prey capture was estimated to be 187 ± 54 ms, suggesting that these nymphs have a rapid prey mechanism. The Young’s modulus and hardness of the mandibles were estimated to be 9.1 ± 1.9 GPa and 0.85 ± 0.13 GPa, respectively. Such mechanical properties of the mandibles make them hard tools that can cut into the exoskeleton of the prey and also resistant to wear. Thus, studying such mechanisms with their sensory capabilities provides a unique opportunity to design and develop bioinspired underwater deployable mechanisms.

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