Author: R. de Wit
Publisher:
ISBN:
Category : Collapse
Languages : en
Pages : 16
Book Description
Analytical models based on fracture mechanics technology are developed to establish predicted critical defect sizes for sharp, circumferential defects in pressurized pipe. These models are only intended to provide a theoretical basis for establishing predicted critical defect sizes. The general problem considered here is that of a surface-defect in a plate; that is, the flat plate analogy is used here for a pipeline. Failure is considered to occur when the ligament ruptures and provides a leakage path. The fracture mechanics model used, called the collapsed ligament model, is based on the work of Erdogan and Bakioglu, which is in turn based on the Dugdale model. The collapsed ligament model assumes plastic collapse in the depth direction but any fracture mechanics model in the length direction. To illustrate the use of these theoretical models for defects in pressurized pipes, curves are derived that show the predicted critical defect sizes. In these curves, the defect depth is plotted versus the defect length for a given set of material properties and applied stress. Defects having sizes that fall below this curve are not expected to extend. On the other hand, it is assumed that defects with sizes which fall above the curve will extend.
Development of Some Analytical Fracture Mechanics Models for Pipeline Girth Welds
Author: R. de Wit
Publisher:
ISBN:
Category : Collapse
Languages : en
Pages : 16
Book Description
Analytical models based on fracture mechanics technology are developed to establish predicted critical defect sizes for sharp, circumferential defects in pressurized pipe. These models are only intended to provide a theoretical basis for establishing predicted critical defect sizes. The general problem considered here is that of a surface-defect in a plate; that is, the flat plate analogy is used here for a pipeline. Failure is considered to occur when the ligament ruptures and provides a leakage path. The fracture mechanics model used, called the collapsed ligament model, is based on the work of Erdogan and Bakioglu, which is in turn based on the Dugdale model. The collapsed ligament model assumes plastic collapse in the depth direction but any fracture mechanics model in the length direction. To illustrate the use of these theoretical models for defects in pressurized pipes, curves are derived that show the predicted critical defect sizes. In these curves, the defect depth is plotted versus the defect length for a given set of material properties and applied stress. Defects having sizes that fall below this curve are not expected to extend. On the other hand, it is assumed that defects with sizes which fall above the curve will extend.
Publisher:
ISBN:
Category : Collapse
Languages : en
Pages : 16
Book Description
Analytical models based on fracture mechanics technology are developed to establish predicted critical defect sizes for sharp, circumferential defects in pressurized pipe. These models are only intended to provide a theoretical basis for establishing predicted critical defect sizes. The general problem considered here is that of a surface-defect in a plate; that is, the flat plate analogy is used here for a pipeline. Failure is considered to occur when the ligament ruptures and provides a leakage path. The fracture mechanics model used, called the collapsed ligament model, is based on the work of Erdogan and Bakioglu, which is in turn based on the Dugdale model. The collapsed ligament model assumes plastic collapse in the depth direction but any fracture mechanics model in the length direction. To illustrate the use of these theoretical models for defects in pressurized pipes, curves are derived that show the predicted critical defect sizes. In these curves, the defect depth is plotted versus the defect length for a given set of material properties and applied stress. Defects having sizes that fall below this curve are not expected to extend. On the other hand, it is assumed that defects with sizes which fall above the curve will extend.
Fracture Mechanics
Author: Richard Roberts
Publisher: ASTM International
ISBN:
Category :
Languages : en
Pages : 587
Book Description
Publisher: ASTM International
ISBN:
Category :
Languages : en
Pages : 587
Book Description
Fracture Mechanics
Author: National Symposium on Fracture Mechanics
Publisher: ASTM International
ISBN: 9780803103634
Category : Fracture mechanics
Languages : en
Pages : 608
Book Description
Publisher: ASTM International
ISBN: 9780803103634
Category : Fracture mechanics
Languages : en
Pages : 608
Book Description
Publications
Author: United States. National Bureau of Standards
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 766
Book Description
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 766
Book Description
Publications of the National Institute of Standards and Technology ... Catalog
Author: National Institute of Standards and Technology (U.S.)
Publisher:
ISBN:
Category :
Languages : en
Pages : 410
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 410
Book Description
A Fracture Mechanics Evaluation of Flaws in Pipeline Girth Welds
Author: Richard Palmer Reed
Publisher:
ISBN: 9781581452440
Category : Pipelines
Languages : en
Pages : 23
Book Description
Publisher:
ISBN: 9781581452440
Category : Pipelines
Languages : en
Pages : 23
Book Description
Journal of Research of the National Bureau of Standards
Author: United States. National Bureau of Standards
Publisher:
ISBN:
Category : Chemistry
Languages : en
Pages : 608
Book Description
Publisher:
ISBN:
Category : Chemistry
Languages : en
Pages : 608
Book Description
Publications of the National Bureau of Standards ... Catalog
Author: United States. National Bureau of Standards
Publisher:
ISBN:
Category :
Languages : en
Pages : 748
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 748
Book Description
NBS Special Publication
Author:
Publisher:
ISBN:
Category : Weights and measures
Languages : en
Pages : 416
Book Description
Publisher:
ISBN:
Category : Weights and measures
Languages : en
Pages : 416
Book Description