Stable tearing characterization of three materials with three methods

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Show simple item record Johnston, Elizabeth Nicole 2012-08-23T12:50:48Z 2012-08-23T12:50:48Z 2012-08-23
dc.description.abstract Over the past several years the crack tip opening angle (CTOA) has been identified as one of the key fracture parameters to characterize low constraint stable tearing and instability in structural metallic alloys. This document presents the results of experimental stable tearing characterizations. Characterization methods include optical microscopy and marker band measurements of crack front tunneling. Specific attention is given to the measurement methods used, and also the correlation between CTOA and Delta-5. The effect of tunneling and comparisons with computational results are discussed, and the effect of material and measurement method on CTOA is observed and a clear relationship is seen. Preliminary work on future studies into internal features and behavior is also presented. en_US
dc.description.sponsorship Department of Defense (DoD) through the National Defense Science & Engineering Graduate Fellowship (NDSEG) Program en_US
dc.language.iso en en_US
dc.publisher Kansas State University en
dc.subject Crack tip opening angle en_US
dc.subject Stable tearing en_US
dc.title Stable tearing characterization of three materials with three methods en_US
dc.type Thesis en_US Master of Science en_US
dc.description.level Masters en_US
dc.description.department Department of Mechanical and Nuclear Engineering en_US
dc.description.advisor Kevin Lease en_US
dc.subject.umi Mechanical Engineering (0548) en_US 2012 en_US December en_US

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