Dynamic Fracture and Crack Arrest Toughness Evaluation of High-Performance Steel Used in Highway Bridges
Rattachement africain : us. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
Impact energy tests are an efficient method of verifying adequate toughness of steel prior to it being put into service. Based on a multitude of historical correlations between impact energy and fracture toughness, minimum impact energy requirements that correspond to desired levels of fracture toughness are prescribed by steel bridge design specifications. Research characterizing the fracture behavior of grade 485 and 690 (70 and 100) high-performance steel utilized impact, fracture toughness, and crack arrest testing to verify adequate performance for bridge applications. Fracture toughness results from both quasi-static and dynamic stress intensity rate tests were analyzed using the most recently adopted master curve methodology. Both impact and fracture toughness tests indicated performance significantly greater than the minimum required by material specifications. Even at the AASHTO Zone III service temperature, which is significantly colder than prescribed test temperatures, minimum average impact energy requirements were greatly exceeded. All master curve reference temperatures, both for quasi-static and dynamic loading rates, were found to be colder than the Zone III minimum service temperature. Three correlations between impact energy and fracture toughness were evaluated and found to estimate reference temperatures that are conservative by 12 to 50 °C (22 to 90 °F) on average for the grades and specimen types tested. The evaluation of two reference temperature shifts intended to account for the loading rate was also performed and the results are discussed.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Dynamic Fracture and Crack Arrest Toughness Evaluation of High-Performance Steel Used in Highway Bridges
- Date Crossref
- 26/04/2023
- Éditeur
- MDPI AG
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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University of Kansas Department of Civil pays non établi dans la noticeUniversité ou école supérieure
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Georgia Institute of Technology pays non établi dans la noticeUniversité ou école supérieure
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Virginia Tech pays non établi dans la noticeUniversité ou école supérieure
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Purdue University West Lafayette pays non établi dans la noticeUniversité ou école supérieure
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School of Civil and Environmental Engineering pays non établi dans la noticeUniversité ou école supérieure
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Virginia Polytechnic Institute and State University Jr. Department of Civil and Environmental Engineering pays non établi dans la noticeUniversité ou école supérieure
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Lyles School of Civil Engineering pays non établi dans la noticeUniversité ou école supérieure
Department of Civil — University of Kansas, Georgia Institute of Technology et Virginia Tech, avec 4 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.