Ductile Crack as Trigger of Brittle Fracture in Steel

Kuwamura, Hitoshi; Yamamoto, Keiichi

doi:10.1061/(asce)0733-9445(1997)123:6(729)

Cited by 107 publications

(25 citation statements)

References 7 publications

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“…Failure mechanism (i) is similar to a low cycle fatigue failure, though there are some differences in failure mechanism, as highlighted by Kuwamura et al [7,8]. As long as the crack propagation occurs slowly, over a sufficiently large number of load cycles and is limited in its extent, this failure mode will not have a detrimental effect on plastic hinge formation.…”

Section: Toughness As a Damage Parametermentioning

confidence: 86%

A novel method for predicting damage accumulation in seismically deformed steel

Seal

Hodgson

Clifton

et al. 2009

Journal of Constructional Steel Research

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Section: Toughness As a Damage Parametermentioning

confidence: 86%

A novel method for predicting damage accumulation in seismically deformed steel

Seal

Hodgson

Clifton

et al. 2009

Journal of Constructional Steel Research

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“…The stresses distribution tends to homogenise in such a way that the bar strength does not decrease more than the section loss. Even, loading fracture values could exceed those when the section existing in the necking area would have been included in the calculation, if all the section were of the same material (40). This is so, because the adjacent sections to the necking area exert confinamiento que ejercen las secciones adyacentes a las de la entalla que al ser más anchas impiden la contracción lateral de la parte más estrecha (41).…”

Section: Discussionmentioning

confidence: 99%

Variación de las características mecánicas de armaduras de alta ductilidad B500SD en función de su grado de corrosión

Escamilla¹,

Moreno²,

Cánovas³

2011

Mater. construcc.

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RESUMENLos efectos de la corrosión sobre las armaduras se manifiestan por la pérdida de sección y la variación de las propiedades mecánicas relacionadas con la ductilidad. En este trabajo se han ensayado a tracción 96 barras de acero B500SD que previamente se han sometido a niveles variables de corrosión. Los resultados muestran que los alargamientos de las barras disminuyen y el cociente entre la tensión máxima y el límite elástico aumenta conforme el nivel de corrosión avanza. A partir del estudio del efecto de entalla y de la distinta constitución metalográfica del acero a nivel de sección debido a su procedimiento de fabricación se pueden explicar los fenómenos anteriores.Palabras clave: corrosión, armadura, ensayo de tracción, ductilidad, hormigón.

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“…However, recent strong earthquakes such as the 1994 Northridge earthquake [8,9] and the 1995 Kobe earthquake [10,11] shake this confident belief in steel welded moment resisting frames, especially for the connections details and fracture-resistant properties of the steels and welding materials. The catastrophic consequences of the earthquakes arouse an extensive research on fracture mechanisms of steel welded structures [12][13][14][15][16][17][18], and more attentions are paid to fracture-resistant and weldability properties of steels [19,20]. As the development of new structural systems, fireproofing properties, connecting feasibility and energy dissipation capacity become more and more important in practice.…”

Section: General Commentsmentioning

confidence: 99%

Advancement and Applications of Japanese High Performance Steel in Structural Engineering

Xiang¹,

Ge²,

Jia³

2016

Volume 12 Number 3

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ABSTRACT:Applications of steel to building structures in Japan can date back to the first steel factory, Shueisha Printing Plant, constructed in 1894. History of steel bridges in Japan can trace back to the first steel bridge, Kurogane Bridge in Nagasaki, constructed in 1868 using wrought iron. As the developments of large-scale structures, new construction technologies and demanding structural performance, a variety of high performance steels (HPSs) have been developed. In this study, history of applications of HPSs to building and bridge structures in Japan is briefly reviewed. The characteristics of typical HPSs in both buildings and bridges are introduced, respectively, and their impacts on structural engineering are also discussed. INTRODUCTIONConstructions of large-scale and large-span structures in developed countries tend to decrease in recent decades, and structural scales of most projects are becoming smaller in countries such as Japan and America. As a rival of reinforced concrete structures, steel structures are confronting a more and more competitive situation. Partially motivated by this concern, a number of high performance steels (HPSs) have been proposed to reduce construction cost, and employed in both building and bridge structures. As progress of new design concepts, connection details, fabrication technologies and mechanics, various properties such as higher strength, ductility, weldability, toughness, weathering and fireproofing properties, are increasingly demanded in practice. For example, design concept based on whole life cycle cost (LCC) is gaining more attention in steel bridges [1], which not only considers initial construction cost, but also maintenance expenses. From the viewpoint of LCC, durability related characteristics, such as weathering and fracture-resistant properties, are becoming more important issues for structural steels.Before discussion on HPS, its definition is distinguished in different countries. In the USA, HPS is defined as having an optimized balance of strength, weldability, toughness, ductility, corrosion resistance and formability, to achieve the best overall performance of structures while remaining cost-effective [2][3][4]. A series of HPSs, HPS50W, HPS70W and HPS100W, were developed for steel bridges [3], where the aforementioned material properties are all considered through new manufacturing technologies including developments in metallurgical, rolling and heat-treatment.On the other hand, HPS in Japan commonly represents steels that have one or several virtues in strength, ductility, fire-proofing, weathering, weldability, toughness, cold formability, connecting feasibility [5,6], etc. Therefore, the definition of HPS in Japan is broader than that in the USA, and there are more steel grades for HPS in Japan. In this study, Japanese HPSs developed respectively

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Ductile Crack as Trigger of Brittle Fracture in Steel

Cited by 107 publications

References 7 publications

A novel method for predicting damage accumulation in seismically deformed steel

A novel method for predicting damage accumulation in seismically deformed steel

Variación de las características mecánicas de armaduras de alta ductilidad B500SD en función de su grado de corrosión

Advancement and Applications of Japanese High Performance Steel in Structural Engineering

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