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About this Digital Document
Three possible mechanisms for non-propagating cracks were proposed with one being at least partially eliminated when a test run in dry argon on Ti-6Al-4V produced little or no change in the threshold compared to that in air. WOL type compact tension specimens of 9310 steel, 4340 steel, and Ti-6Al-4V were cyclically loaded at frequencies up to 200 cps for long periods of time to obtain extremely slow crack propagaion data down to 5 x 10-9 inches per cycle. Fracture mechanics was used to analyze the data in terms of K, the alternating stress intensity parameter, and da/dn, the fatigue crack growth rate.
Full Title
A threshold in metal fatigue
Member of
Contributor(s)
Creator: Schmidt, Richard A.
Thesis advisor: Paris, Paul C.
Publisher
Lehigh University
Date Issued
1970-05
Language
English
Type
Genre
Form
electronic documents
Department name
Applied Mechanics
Digital Format
electronic documents
Media type
Creator role
Graduate Student
Identifier
1048261869
https://asa.lib.lehigh.edu/Record/10947079
Keywords
Citation
@mastersthesis{schmidt1970,
title = {A threshold in metal fatigue},
author = {Schmidt, Richard},
year = {1970},
month = may,
publisher = {Lehigh University},
isbn = {1048261869},
url = {https://asa.lib.lehigh.edu/Record/10947079},
keywords = {Mechanics, Applied},
abstract = {Three possible mechanisms for non-propagating cracks were proposed with one being at least partially eliminated when a test run in dry argon on Ti-6Al-4V produced little or no change in the threshold compared to that in air. WOL type compact tension specimens of 9310 steel, 4340 steel, and Ti-6Al-4V were cyclically loaded at frequencies up to 200 cps for long periods of time to obtain extremely slow crack propagaion data down to 5 x 10-9 inches per cycle. Fracture mechanics was used to analyze the data in terms of K, the alternating stress intensity parameter, and da/dn, the fatigue crack growth rate.},
language = {English},
}
