NO3' ions slow down subcritical crack growth in high strength steel induced by aqueous solution

1976 ◽  
Vol 10 (8) ◽  
pp. 751-754 ◽  
Author(s):  
J. Eickemeyer
Keyword(s):  
Aqueous Solution ◽  
Crack Growth ◽  
High Strength Steel ◽  
Subcritical Crack Growth ◽  
High Strength

Subcritical Crack Growth and Long-Term Strength in Rock and High-Strength and Ultra Low-Permeability Concrete

2009 ◽  
Vol 58 (6) ◽  
pp. 525-532 ◽  
Author(s):  
Yoshitaka NARA ◽  
Masafumi TAKADA ◽  
Daisuke MORI ◽  
Hitoshi OWADA ◽  
Tetsuro YONEDA ◽  
...  
Keyword(s):  
Crack Growth ◽  
Subcritical Crack Growth ◽  
High Strength ◽  
Low Permeability ◽  
Term Strength

Subcritical Crack Growth and Ship Structural Design

1976 ◽  
Vol 13 (02) ◽  
pp. 152-160
Author(s):  
Philip H. Francis ◽  
Philip H. Francis ◽  
James Lankford ◽  
Fred F. Lyle
Keyword(s):  
Crack Growth ◽  
Structural Design ◽  
Load Distribution ◽  
Subcritical Crack Growth ◽  
High Strength ◽  
Design Criterion ◽  
Low Alloy Steels ◽  
Initiation And Propagation ◽  
Alloy Steels ◽  
Environmental Attack

A review is made of the factors which influence subcritical crack growth in conventional and high-strength, low-alloy steels of the type used in primary and secondary welded ship structures. The types of influencing factors considered are the metallurgical parameters, the fracture mechanics of the crack tip processes, the loading state, and the mechanisms of environmental attack. The fatigue process is separated into the crack initiation and (subcritical) crack propagation stages, and the relative influence of the above factors is discussed for each of these stages. Following this review, a basis for a design criterion is established for safe-life design of welded cargo ship structure. Two specific criteria are advanced: one which utilizes only the endurance strengths of the weldment types employed for constant-amplitude cyclic loading, and the other which sums the initiation and propagation lives each as governed by a spectral load distribution. These two criteria are compared, and existing gaps which need to be closed to elevate the confidence in the criteria are pointed out.

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