National Repository of Grey Literature 6 records found  Search took 0.00 seconds. 
Recent Trends in Research and Development of Non-toxic Small Calibre Bullets
Macháček, Tomáš ; Komenda,, Jan (referee) ; Klakurková, Lenka (advisor)
This thesis focuses on finding equivalent replacement of toxic lead used in bullets with different non-toxic material. Bullets produced from copper, brass, zinc and lead were tested. The work contains information about chemical composition, a macro and mikro documentation and the hardness values of each bullet. Methods of light microscopy, scanning electron microscopy and microhardness measurements were used for this study.
Sensor for sensing of the one-time fast events
Kočí, Radek ; Kubásek, Radek (referee) ; Klusáček, Stanislav (advisor)
In this thesis are analyzed and compared currently used methods for measuring the speed of moving objects. These are primarily optical and electromagnetic methods. In the practical part is made a design of a new electromagnetic sensor arrangement on the inductive principle using modeling in program FEMM, through the compilation and verification of practical functionality.
Methodology for measurement of fast projectiles speed decrement during their penetration through various substances using a digital opto-mechanical device
Šperl, Martin ; Gajdoš, Lubomír ; Wolf, Benjamin
This methodology describes the procedures, the equipment and software used for measurement of the speed decrease of flying projectile through different bulk, silicate and solid masses. The advantage and uniqueness of this methodology consists in ability to measure the attenuation characteristics of various materials during the impact by high speed projectile. The methodology is based on a system of thin plates with optic fibers that function as a light-time gate with a defined pitch.
Weapon (not only) as a work of art
Sedláček, Petr ; Šmíd, Jan (advisor) ; Sýkora, Ondřej (referee)
The purpose of this bachelor work is to introduce a small-arms not only as an object for various kinds of practical utilization, but also to afer on thein values from the point of their perception as an art artefact in the linkup on their development in different cultures. It directs also on the region of Japan and samurai swords with reference on their sociocultural value. In the part dedicated to the hand weapons it introduces a history of their creation and methods of their division. In the last part presents the weapon as a device used in the movie industry and in the computer games in the linkup on a weapon presentation as an item of the violence in an up to date society. One of the targets of this bachelor work about weapons is an analyse of the social pathological event of the shooting in the schools so called "school shooting", which becomes very extended phenomen of current days. Work points on the possibilities and reasons of the origin of this phenomen by revealing a possible offender profile and further I introduce a concepts of the school shooting prevention in the linkup on the posibility to reveal potencial offender in time. Benefits of the bachelor work is getting a basic knowledges from the history and hand weapons development section, but also their presentation as an object of...
Sensor for sensing of the one-time fast events
Kočí, Radek ; Kubásek, Radek (referee) ; Klusáček, Stanislav (advisor)
In this thesis are analyzed and compared currently used methods for measuring the speed of moving objects. These are primarily optical and electromagnetic methods. In the practical part is made a design of a new electromagnetic sensor arrangement on the inductive principle using modeling in program FEMM, through the compilation and verification of practical functionality.
Recent Trends in Research and Development of Non-toxic Small Calibre Bullets
Macháček, Tomáš ; Komenda,, Jan (referee) ; Klakurková, Lenka (advisor)
This thesis focuses on finding equivalent replacement of toxic lead used in bullets with different non-toxic material. Bullets produced from copper, brass, zinc and lead were tested. The work contains information about chemical composition, a macro and mikro documentation and the hardness values of each bullet. Methods of light microscopy, scanning electron microscopy and microhardness measurements were used for this study.

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