A Experimental Study on Strength Safety of Rail Steel using Gas Pressure Welding
| Autor: | Kyung-Seob Kim |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Materials science
Bending (metalworking) Strategy and Management Geography Planning and Development Energy Engineering and Power Technology Transportation Welding respiratory system Fatigue limit Driving safety law.invention Gas pressure law Automotive Engineering Ultimate tensile strength Fracture (geology) Composite material Civil and Structural Engineering Tensile testing |
| Zdroj: | Journal of the Korean society for railway. 15:266-271 |
| ISSN: | 1738-6225 |
| DOI: | 10.7782/jksr.2012.15.3.266 |
| Popis: | This study was carried out for the purpose of improving driving safety and comfort of the railways quickly becoming popular. To conducted gas pressure welding to ensure the strength safety of continuous welded rail and rotating bending test tensile test was conducted. The element to determine the tensile strength of gas pressure welds at experiments be attributed to more upsetting length than pressure, according to increases of upsetting length, from brittle fracture to ductile fracture was observed. Through the biopsy of the fracture surface, according to the presence of brittle fracture could be evaluated to strength safety. In addition, mechanical strength of gas pressure welding depending on changes in upsetting length was different. Rotary bending test results were obtained to the infinite life according to exhibited higher fatigue limit of 373MPa at upsetting length 25mm. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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