Alignment and Combination Rules on Multiple Flaws in Fitness-for-Service Procedures

Kunio Hasegawa; Katsumasa Miyazaki

doi:10.4028/www.scientific.net/KEM.345-346.411

Paper Titles

Application of Notch Strain Approach to Evaluate Fatigue Life of Construction Equipment
p.387

Soft Surface Layer of Age-Hardened Al-Zn Alloys and Its Effect on the Fatigue Strength
p.391

Two Methods for Determination of Fatigue Crack Propagation Limit Curves and their Application for Different Materials
p.395

Fracture Assessment of Flaws in Weldments using FITNET FFS Procedure: An Overview
p.401

Alignment and Combination Rules on Multiple Flaws in Fitness-for-Service Procedures
p.411

Failure Assessment Diagrams for a Solid with a Crack or Notch under Uniaxial and Biaxial Loading
p.417

Steel of Highest Fracture Energy
p.421

Influence of Plastic Anisotropy on Limit Load of Welded Joints with Cracks
p.425

Crack Propagation as a Free Boundary Problem
p.429

HomeKey Engineering MaterialsKey Engineering Materials Vols. 345-346Alignment and Combination Rules on Multiple Flaws...

Alignment and Combination Rules on Multiple Flaws in Fitness-for-Service Procedures

Abstract:

If multiple discrete flaws are detected, alignment and combination rules are used to determine whether the flaws should be treated as non-aligned or as coplanar, and independent or combined flaws. Alignment and combination rules for multiple flaws are provided in Fitness-for-Service (FFS) procedures of many codes and standards in the world. However, these alignment and combination rules defined in the FFS are different. This paper aims to give overview of alignment and combination rules for multiple flaws in FFS procedures. In addition, experimental data on flat plates with parallel planar flaws are compared with the alignment rules of these FFS procedures.