Evaluating the fracture toughness of layered pressure vessel steels
| Autor: | R. E. Link, Doug Wells, James A. Joyce, Preston W. Jacobs, Levi Shelton, Brian Stoltz |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
business.industry Mechanical Engineering 0211 other engineering and technologies 02 engineering and technology Structural engineering Pressure vessel 020303 mechanical engineering & transports Fracture toughness 0203 mechanical engineering Mechanics of Materials Space program General Materials Science business 021101 geological & geomatics engineering |
| Zdroj: | Engineering Fracture Mechanics. 207:149-164 |
| ISSN: | 0013-7944 |
| Popis: | This paper describes testing conducted on dis-assembled layered pressure vessels to determine the fracture toughness properties of the component structural steels used in their construction. These vessels are part of a large number of similar vessels used at NASA laboratory facilities which were constructed during the 1950s and 1960s to support the then expanding space program. Fracture toughness properties are determined for the ferritic structural steels according to the ASTM standards E1820 and E1921 and the intention is to use the properties obtained from a small number of sacrificed vessels to assure the safety of the remaining vessels. This paper describes the NASA program briefly and the preliminary data obtained more extensively. The steels used to construct the vessels are no longer used in pressure vessel construction but are present in many structures that exist throughout the world that date from the same time period. The properties are hence important and useful beyond the more narrow NASA application. A discussion is also included on the applicability of the modern ASTM fracture toughness tests to evaluate the fracture toughness properties of these early high strength pressure vessel steels. |
| Databáze: | OpenAIRE |
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