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What's New in NASGRO

Capability Growth 

Recent Enhancements

Recent enhancements in the current version 10.2 include:

  • New K solution for curved through cracks at every hole in row of holes
  • New K solution for one corner crack at single hole in row of holes
  • New weight function (WF) K solution for curved through crack at edge of plate
  • New WF K solution for internal circumferential surface crack in a cylinder
  • New K solution for semi-elliptical surface crack in notched round bar
  • New API 579 K solution for corner crack at pressure vessel nozzle
  • New bivariant WF K solution for corner crack at pressure vessel nozzle
  • New multi-temperature capabilities for shakedown and FAD calculations

A PDF flyer describing the current version can be downloaded here. A webinar about NASGRO 10.2 can be viewed here.

Previous Versions

Summaries of new features and enhancements in previous versions are available in the release notes for each version.

Future Development

Major new features planned for version 11.0 include:

  • New bivariant WF K solution for curved through crack at edge of plate
  • New K solution for two curved through cracks at one hole in row of holes
  • New bivariant WF K solution for corner crack on long ligament side of hole
  • New K solution for corner crack in T-section flange
  • Expansion and update of EPFM models and capabilities
  • API 579 crack transition criteria and weld residual stress polynomials

Plans for future versions include:

  • New K solutions for surface or corner crack at fillet of L-section or T-section
  • Superposition methods for time-dependent crack growth
  • Advanced methods for thermomechanical fatigue crack growth
  • Additional K solutions for curved through cracks
  • New K solutions for plates and lugs with out-of-plane bending from pin loads
  • Additional K solutions for other unique geometries


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