Review of the Physical Basis of Laboratory-derived Relations for Brittle Failure and their Implications for Earthquake Occurrence and Earthquake Nucleation

Author(s):  
N. M. Beeler
1877 ◽  
Author(s):  
George Henry Lewes
Keyword(s):  

1908 ◽  
Author(s):  
Winthrop T. Talbot
Keyword(s):  

1922 ◽  
Vol 126 (3) ◽  
pp. 177-178 ◽  
Author(s):  
James B. Kelly
Keyword(s):  

Alloy Digest ◽  
1984 ◽  
Vol 33 (12) ◽  

Abstract Alloy Steel 3.5Ni-1.8Cr-0.4Mo-0.1V is highly suitable for massive components, usually more than four inches thick. It has high hardenability which in a water-spray or water-immersion quench contributes to the formation of sizeable amounts of martensite along with some bainite, and possibly a little ferrite. On tempering, the martensite adds to toughness and lowers the temperature of transition from tough to brittle failure. This steel is suitable for intermediate-duty and heavy-duty generator and turbine rotors, large axles and shafts, large gears and ship forgings. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as forming, heat treating, and machining. Filing Code: SA-404. Producer or source: Alloy steel mills and foundries.


2018 ◽  
Vol 69 (6) ◽  
pp. 1352-1354
Author(s):  
Anamaria Feier ◽  
Oana Roxana Chivu

The problem of corrosion for old steel bridges in operation is often solved by direct replacement of elements or structure. Only a few studies have been done to determine the efforts influenced by corrosion in those elements. In general, it is considered that a corroded element has exceeded the bearing capacity and should be replaced, but if the corroded element is secondary it could be treated and kept. A factor in the rehabilitation of an old steel bridge in operation is the aspect of structure. If the structure is corroded, rehabilitation decision is taken is easier. Lamellar tearing describes the cracking that occurs beneath the weld and can be characterized as a brittle failure of steel, in the direction perpendicular to the plane of rolling. The paper presents a comprehensive study on lamellar tearing and summarizes some conclusions about the prevention of them. The conclusions will be exemplified in the case of a railway bridge, with a main truss girder. The paper presents also some observations regarding the stress analysis in fillet welds, resulting from the engineering practice.


2003 ◽  
Author(s):  
J. T. Bendler ◽  
J. J. Fontanella ◽  
M. F. Shlesinger
Keyword(s):  

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