|
|
Hardness and scratch resistance measurement using universal tribometer
Urbášek, Jan ; Galas, Radovan (referee) ; Omasta, Milan (advisor)
This bachelor thesis deals with a hardness and scratch resistance measurement. These tests are normally performed using special devices. From a design point of view, these tests can also be performed using universal tribometers, but they do not have implemented tools for subsequent measurement evaluation. The main goal of the work was to develop a methodical procedure including evaluation of these tests. The methodological procedures were subsequently verified by several experiments.
|
|
|
Hardness testing of metallic materials
Dufková, Hana ; Věchet, Stanislav (referee) ; Němec, Karel (advisor)
The aim of this thesis is to define and describe the hardness of material, possibilities of its testing, including the history and development of individual tests of hardness. The practical part of this work consists of the application of some of these tests on selected samples, including the evaluation of the results.
|
|
|
Hardness measurement
Tušla, Jan ; Šlais, Miroslav (referee) ; Podaný, Kamil (advisor)
Hardness is one of the most important properties of materials. For measurement and evaluation of hardness exist a number of methods. Each has its own rationale, applicability, advantages and disadvantages. The most frequently used tests of measuring hardness are indentation methods (Brinell, Vickers, Rockwell, Knoop), rebound methods (Leeb) and scratch methods (Martens).
|
|
|
Hardness measurement of metal materials
Trčka, Tomáš ; Kandus, Bohumil (referee) ; Podaný, Kamil (advisor)
The hardness is the mechanical property of each metal material that affects his behaviour. There are many methods of measurement. Each method has its advantages, shortcomings and possibilities of use. The best known tests are according to Brinell, Vickers and Rockwell. The newer methods with portable hardness tester are UCI, TIV and the dynamic method by Leeb. The tests are carried out by mechanical pressure load using the impact body (indenter) of the harder material than the test material. The experimental measurement was executed on the three types of cutting inserts with different nominal hardness made from cemented carbides using the Vickers method with the load of 10 kp and 30 kp. The highest value of hardness was measured on the cutting insert SMG02 - 1988 HV10.
|
|
| |
|
| |
|
| |
|
| |
|
| |
|
|
Measurement of material hardness focused on metallic materials by dynamic method and using mobile hardness tester DHT-100
KOCH, Karel
During introduction this work describes dynamic method of hardness measurement particularly with focus on DHT-100 hardness tester. In the next part, history and development of hardness testing is being mentioned. Practical part of this work is dedicated to comparison of dynamic method with other known methods of hardness testing. Aim of this work was also to create work instructions for usage and measurements done by DHT-100 hardness tester. The work instructions are being described and introduced in practical part as well.
|
guest ::
