Evaluation of fiber-reinforced composites using noncontact laser air- transducer system

Ultrasonic evaluation of materials using a non-contact system is sometimes desirable, for example when the material is moving too quickly to allow conventional fluid couplants to be used, is contained in a hostile environment, or the material itself is absorbent or toxic. In such situations, a pulsed laser is ideal for generating a variety of ultrasonic transients [1], as longitudinal, shear, surface (Rayleigh) waves and plate (Lamb) waves are generated simultaneously. Several types of non-contact detector are also available, including various optical devices [2] such as interferometers and beam deflectors. The disadvantages of an entirely laser based system are cost, and the optical quality of the test material must be reasonably high

The Faculty of Electrical Engineering and Communication Brno University of Technology, implementation of carcass substructure

The bachelor thesis deals with the processing of materials and documentation of the chosen stage of a carcass substructure of The Faculty of Electrical Engineering and Communication Brno University of Technology. The object of the thesis is a realization of a diaphragm wall and soil nailing in order to ensure the foundation pit. The project consists of the technical reports which focus on the chosen technological stage, technical regulations, control and test plans, organization of the construction plan, safety plan, proposal of the machinery and structural plans