MATERIAL SELECTION IN GEAR
Radinko GLIGORIJEVIĆ
Jeremija JEVTIĆ
Djuro BORAK
Abstract. Materials and process selection are key issues in optimal design of industrial products. Substituting and selecting materials for different machining parts is relatively common and often. Material selection is a difficult and subtle task, due to the immense number of different available materials.
From this point of view paper deal with a set of major gear design criteria which are used for gear material selection. The main gear design criteria are: surface fatigue limit index, bending fatigue limit index, surface fatigue lifetime index, bending fatigue lifetime index, wear resistance of toots flank index and machinability index.
Using computer allows a large amount of information to be treated rapidly. One the most suitable model, for ranking alternatives gear materials, is ELECTRA, which using a multiple criteria, which all material performance indices and their uncertainties are accounted for simultaneously. Key words: gear, material, selection
1. INTRODUCTION
Materials and process selection are key issues in optimal design of industrial products. Recently many materials which have long been used in industry are being replaced by newer materials in order to meet demands of cost reduction and better performance [1,2,3].
In the manufacture of mechanical parts, knowledge of material properties, cost, design concepts and their interactions is required. The large number of available materials, together with the complex relationships between the various selection parameters, often makes the selection process a difficult task. When selecting materials, a large number of factors must be taken into account. These factors are mechanical properties, physical and electrical properties, corrosion resistance, environmental friendliness and economy. In mechanical design, however, mechanical properties are the most important. The most important mechanical material
properties
Jeremija JEVTIĆ
Djuro BORAK
Abstract. Materials and process selection are key issues in optimal design of industrial products. Substituting and selecting materials for different machining parts is relatively common and often. Material selection is a difficult and subtle task, due to the immense number of different available materials.
From this point of view paper deal with a set of major gear design criteria which are used for gear material selection. The main gear design criteria are: surface fatigue limit index, bending fatigue limit index, surface fatigue lifetime index, bending fatigue lifetime index, wear resistance of toots flank index and machinability index.
Using computer allows a large amount of information to be treated rapidly. One the most suitable model, for ranking alternatives gear materials, is ELECTRA, which using a multiple criteria, which all material performance indices and their uncertainties are accounted for simultaneously. Key words: gear, material, selection
1. INTRODUCTION
Materials and process selection are key issues in optimal design of industrial products. Recently many materials which have long been used in industry are being replaced by newer materials in order to meet demands of cost reduction and better performance [1,2,3].
In the manufacture of mechanical parts, knowledge of material properties, cost, design concepts and their interactions is required. The large number of available materials, together with the complex relationships between the various selection parameters, often makes the selection process a difficult task. When selecting materials, a large number of factors must be taken into account. These factors are mechanical properties, physical and electrical properties, corrosion resistance, environmental friendliness and economy. In mechanical design, however, mechanical properties are the most important. The most important mechanical material
properties