Abstract
A modified crackline-loaded edge-crack stress corrosion specimen is described. The geometry of the side grooves necessary for stable crack propagation in the desired plane are determined using amorphous Plexiglass specimens. The linear dependence of the compliance with crack length are experimentally established. A linear dependence of crack initiation load with the square root of the product of the sample thickness and crack width for any sample thickness was determined. The geometric results of the Plexiglass study is then shown to transfer directly to the behavior of Ti alloys used in stress corrosion studies. Typical crack velocity values as a function of load and applied electrochemical potential are given. These are shown to be independent of crack location for a well defined region of the specimen.
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