Prevention of Railroad Wheel Fracture
Railroad wheel brittle fractures normally occur from the tips of thermal cracks originating in the tread or flange. Tensile stress that contributes to the fracture is produced by abnormal brake heating. In the US, there used to be a comparable number of derailments due to such brittle wheel fracture...
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| Veröffentlicht in: | JSME International Journal Series A Solid Mechanics and Material Engineering 2003, Vol.46(4), pp.613-619 |
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| container_title | JSME International Journal Series A Solid Mechanics and Material Engineering |
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| creator | SAKAMOTO, Haruo HIRAKAWA, Kenji |
| description | Railroad wheel brittle fractures normally occur from the tips of thermal cracks originating in the tread or flange. Tensile stress that contributes to the fracture is produced by abnormal brake heating. In the US, there used to be a comparable number of derailments due to such brittle wheel fractures. In Japan, brake conditions have not been so severe, and maintenance has been moderate. Therefore, such fractures have not been a major concern in wheel damage. However, conditions such as load and speed of railroad vehicles have become more severe in recent years. Therefore, more precise evaluation of wheel strength and safety is necessary. On the other hand, recent developments in fracture mechanics and elastic-plastic finite element analysis enables us to understand the causes and processes of mechanical failure such as brittle fracture. This paper reports on the research on strength estimation and safety improvements, which are required to prevent the railroad wheel fractures. |
| doi_str_mv | 10.1299/jsmea.46.613 |
| format | Article |
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Tensile stress that contributes to the fracture is produced by abnormal brake heating. In the US, there used to be a comparable number of derailments due to such brittle wheel fractures. In Japan, brake conditions have not been so severe, and maintenance has been moderate. Therefore, such fractures have not been a major concern in wheel damage. However, conditions such as load and speed of railroad vehicles have become more severe in recent years. Therefore, more precise evaluation of wheel strength and safety is necessary. On the other hand, recent developments in fracture mechanics and elastic-plastic finite element analysis enables us to understand the causes and processes of mechanical failure such as brittle fracture. This paper reports on the research on strength estimation and safety improvements, which are required to prevent the railroad wheel fractures.</description><identifier>ISSN: 1344-7912</identifier><identifier>EISSN: 1347-5363</identifier><identifier>DOI: 10.1299/jsmea.46.613</identifier><language>eng</language><publisher>Tokyo: The Japan Society of Mechanical Engineers</publisher><subject>Applied sciences ; Brittle Fracture ; Condensed matter: structure, mechanical and thermal properties ; Exact sciences and technology ; Fatigue, brittleness, fracture, and cracks ; FEM ; Fracture Toughness ; Fractures ; Mechanical and acoustical properties of condensed matter ; Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology ; Mechanical properties of solids ; Metals. 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Tensile stress that contributes to the fracture is produced by abnormal brake heating. In the US, there used to be a comparable number of derailments due to such brittle wheel fractures. In Japan, brake conditions have not been so severe, and maintenance has been moderate. Therefore, such fractures have not been a major concern in wheel damage. However, conditions such as load and speed of railroad vehicles have become more severe in recent years. Therefore, more precise evaluation of wheel strength and safety is necessary. On the other hand, recent developments in fracture mechanics and elastic-plastic finite element analysis enables us to understand the causes and processes of mechanical failure such as brittle fracture. This paper reports on the research on strength estimation and safety improvements, which are required to prevent the railroad wheel fractures.</description><subject>Applied sciences</subject><subject>Brittle Fracture</subject><subject>Condensed matter: structure, mechanical and thermal properties</subject><subject>Exact sciences and technology</subject><subject>Fatigue, brittleness, fracture, and cracks</subject><subject>FEM</subject><subject>Fracture Toughness</subject><subject>Fractures</subject><subject>Mechanical and acoustical properties of condensed matter</subject><subject>Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology</subject><subject>Mechanical properties of solids</subject><subject>Metals. 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Rheology. Fracture mechanics. Tribology</topic><topic>Mechanical properties of solids</topic><topic>Metals. Metallurgy</topic><topic>Physics</topic><topic>Railroad Wheel</topic><topic>Stress Intensity Factor</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>SAKAMOTO, Haruo</creatorcontrib><creatorcontrib>HIRAKAWA, Kenji</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>JSME International Journal Series A Solid Mechanics and Material Engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>SAKAMOTO, Haruo</au><au>HIRAKAWA, Kenji</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Prevention of Railroad Wheel Fracture</atitle><jtitle>JSME International Journal Series A Solid Mechanics and Material Engineering</jtitle><date>2003-10-01</date><risdate>2003</risdate><volume>46</volume><issue>4</issue><spage>613</spage><epage>619</epage><pages>613-619</pages><issn>1344-7912</issn><eissn>1347-5363</eissn><abstract>Railroad wheel brittle fractures normally occur from the tips of thermal cracks originating in the tread or flange. Tensile stress that contributes to the fracture is produced by abnormal brake heating. In the US, there used to be a comparable number of derailments due to such brittle wheel fractures. In Japan, brake conditions have not been so severe, and maintenance has been moderate. Therefore, such fractures have not been a major concern in wheel damage. However, conditions such as load and speed of railroad vehicles have become more severe in recent years. Therefore, more precise evaluation of wheel strength and safety is necessary. On the other hand, recent developments in fracture mechanics and elastic-plastic finite element analysis enables us to understand the causes and processes of mechanical failure such as brittle fracture. 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| identifier | ISSN: 1344-7912 |
| ispartof | JSME International Journal Series A Solid Mechanics and Material Engineering, 2003, Vol.46(4), pp.613-619 |
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| subjects | Applied sciences Brittle Fracture Condensed matter: structure, mechanical and thermal properties Exact sciences and technology Fatigue, brittleness, fracture, and cracks FEM Fracture Toughness Fractures Mechanical and acoustical properties of condensed matter Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology Mechanical properties of solids Metals. Metallurgy Physics Railroad Wheel Stress Intensity Factor |
| title | Prevention of Railroad Wheel Fracture |
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