Abstract
The objective of the Crack Growth/Modeling effort of the NG-18 Line Pipe Supervisory Committee’s Stress-Corrosion Phase is to develop an understanding of the factors that control stress-corrosion crack growth. This information can be used to develop models for predicting crack growth and to mitigate crack growth through control of metallurgical parameters and operating conditions. This effort has been divided into the following four main tasks:
(1) Characterization of crack shape,(2) Identification of a crack force driving parameter,(3) Determination of the effects of mechanical properties on crack growth and shape, and(4) Examination of the effects of crack interaction on overall crack growth.
The background, procedures, and results of the work done in each of these tasks will be described separately.
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L51576 Crack Growth Behavior and Modeling
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