MECHANICAL PROPERTIES OF ADVANCE CERAMIC

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This book provides information related to mechanical properties of advance ceramic from preparing the sample for testing and protocol for measurement the mechanical standard Advance ceramics are hard and brittles so its mechanical properties addressed mainly to hardness testing and fracture toughness KIC testing In chapter 1 of this book is introduced improvement of fracture toughness testing from the standard established that is using single edge V notch beam SEVNB to become Single edge precrack v notch beam SEPVNB The more valid result is obtained because real crack established at the tip of notch prepared for fracture toughness testing New method in fabrication of advance ceramic is introduced in Chapter 2 The fabrication is introduced by Lithography Based Manufactured which is the product of advance ceramic is manufactured layer by layer such 3D printing By this technique a complicated product can be obtained with having mechanical properties similar to one that produce by using conventional sintering method The specific application of advance ceramic in renewable energy field is introduced in Chapter 3 The bearing of wind turbine for electric generation is manufactured by using advance ceramic of silicon nitride that is recognize as steel of ceramic Wind turbine is constructed at elevated structure with difficulty in maintenance of the bearing By using silicon nitride as a bearing the wear of the bearing can be avoided for such a long time and maintenance cost can be reduced The quality of silicon nitride as a bearing is tested by using hardness test method In Chapter 4 the fracture toughness test by using established standard of American Society for Testing and Materials ASTM is introduced The testing is conducted by provided micro crack by using knop indenter The crack obtained in the shape of half circle and measurement of the rack size is measured under microscope The protocol for measurement of fracture toughness by using Single Edge V notch Beam is introduced in detail in Chapter 5 This is an International Organization for Standardization ISO The material is notched by using razor blade with diamond paste so that sharp notched is obtained A Route of ceramography is introduced in Chapter 6 It is a process of cutting the advance ceramic grinding polishing etching and observation of microstructure of advance ceramic Not like in case of metal etching to etching ceramic need special protocol by heating in plasma Ceramography also include respond of advance ceramic to diamond indentation of Vicker and Knoop To measurement fracture toughness of advance ceramic an initial crack with certain size and shape is needed and this feature can be provided by using diamond Knoop indentation But certain procurement is needed in order regular crack with certain shape is obtained This can be done by grinding and polishing the surface in certain amount after indented the surface by Knoop diamond indentation It is needed to compare of 2 method of fracture toughness test of SEVNB and Surface Crack in Flexure SCF that can be taken as consideration for ensuring the fracture toughness of advance ceramic This can be explained in Chapter 8 and 9 Finally in Chapter 10 and 11 the method of increasing value of fracture toughness of advance ceramic can be done by reinforcement with silicon carbide whisker SiCw This book provides information related to mechanical properties of advance ceramic, from preparing the sample for testing, and protocol for measurement the mechanical standard. Advance ceramics are hard and brittles so its mechanical properties addressed mainly to hardness testing and fracture toughness (KIC) testing. In chapter 1 of this book is introduced ...improvement of fracture toughness testing from the standard established that is using single edge V-notch beam (SEVNB) to become Single edge precrack v-notch beam (SEPVNB). The more valid result is obtained because real crack established at the tip of notch prepared for fracture toughness testing. New method in fabrication of advance ceramic is introduced in Chapter 2. The fabrication is introduced by Lithography Based Manufactured which is the product of advance ceramic is manufactured layer by layer such 3D printing. By this technique a complicated product can be obtained with having mechanical properties similar to one that produce by using conventional sintering method. The specific application of advance ceramic in renewable energy field is introduced in Chapter 3. The bearing of wind turbine for electric generation is manufactured by using advance ceramic of silicon nitride that is recognize as steel of ceramic. Wind turbine is constructed at elevated structure with difficulty in maintenance of the bearing. By using silicon nitride as a bearing, the wear of the bearing can be avoided for such a long time and maintenance cost can be reduced. The quality of silicon nitride as a bearing is tested by using hardness test method. In Chapter 4, the fracture toughness test by using established standard of American Society for Testing and Materials (ASTM) is introduced. The testing is conducted by provided micro crack by using knop indenter. The crack obtained in the shape of half circle and measurement of the rack size is measured under microscope. The protocol for measurement of fracture toughness by using Single Edge V-notch Beam is introduced in detail in Chapter 5. This is an International Organization for Standardization (ISO). The material is notched by using razor blade with diamond paste so that sharp notched is obtained. A Route of ceramography is introduced in Chapter 6. It is a process of cutting the advance ceramic, grinding, polishing, etching, and observation of microstructure of advance ceramic. Not like in case of metal etching, to etching ceramic need special protocol by heating in plasma. Ceramography also include respond of advance ceramic to diamond indentation of Vicker and Knoop. To measurement fracture toughness of advance ceramic, an initial crack with certain size and shape is needed, and this feature can be provided by using diamond Knoop indentation. But certain procurement is needed in order regular crack with certain shape is obtained. This can be done by grinding and polishing the surface in certain amount after indented the surface by Knoop diamond indentation. It is needed to compare of 2 method of fracture toughness test of SEVNB and Surface Crack in Flexure (SCF) that can be taken as consideration for ensuring the fracture toughness of advance ceramic. This can be explained in Chapter 8 and 9. Finally in Chapter 10 and 11 the method of increasing value of fracture toughness of advance ceramic can be done by reinforcement with silicon carbide whisker (SiCw).

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