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- W302233377 abstract "The subject analyses were conducted on 3 critical locations on the lower flange of the load-beam of the Ederer 5 ton and 4 ton cranes in the D.A.F. facility. An expression for the fatigue-crack growth behavior of ferritic-pearlitic constructional steels (``Barsom Equation``) was used in place of the previously used equation to describe fatigue-crack growth behavior in this steel (base-line equation) to evaluate the effects of varying the fatigue-crack growth rate. Results appear that: (1) Propagation of a 1/4-in. long flaw, previously undetected by NDE, to a length sufficient to cause failure of either flange, should not occur in at least 70.8 times the postulated operating scenario, down from 104 times as calculated using the base line equation. (2) Should each crane undergo annual inspection, any surface flaw with a length greater than 1.10 in. should be removed and repaired by qualified and approved repair procedures. This flaw length has increased from a surface flaw length of 0.9 in. (base line equation). (3) The indicated change in empirically measured fatigue-crack growth equation did not adversely affect the previous work on modeling fatigue performance of these cranes." @default.
- W302233377 created "2016-06-24" @default.
- W302233377 creator A5066479540 @default.
- W302233377 date "1997-02-03" @default.
- W302233377 modified "2023-09-24" @default.
- W302233377 title "Results of fracture mechanics analyses of the Ederer cranes in the Device Assembly Facility: The effect of using a general expression for fatigue crack growth of the crane material" @default.
- W302233377 doi "https://doi.org/10.2172/514954" @default.
- W302233377 hasPublicationYear "1997" @default.
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