Capability Growth
Recent Enhancements
Recent enhancements in the current version 11.1 include:
- New K solution for a Through Crack in the Web of a T-Section
- New K solution for a Surface Crack at the Fillet of an L-Section
- New K solution for a Corner Crack at an L-Section
- New K solution for an Edge Crack Growing Towards a Hole
- Expansion of K solution for one curved through crack as one hole in a row of holes
- Addition of newer weight function (WF) K solutions to the Elastic-Plastic Fracture Mechanics (EPFM) Module
- Capability to Use API 579 & ASME Paris Equations (1-D and 2-D)
- Access to material database from the critical crack size module) NASCCS)
- Expanded availability of K solutions in the NASGLS module
- Improved crack transition features
A PDF flyer describing the current version can be downloaded here.
Recent Publications
- “OSMA Continues Development of NASGRO Software for Fitness-for-Service Analyses of Ground-Based Pressure Systems” was posted in March 2026 on the NASA Office of Safety and Mission Assurance website at https://sma.nasa.gov/news/articles.
- The 2025 SwRI report entitled “Fitness-For-Service Assessments of Crack-Like Flaws Using NASGRO” has been published as a NASA contractor report (NASA/CR-20250011200) at https://ntrs.nasa.gov/citations/20250011200.
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 11.2 include:
- Superposition methods for time-dependent crack growth
- Advanced methods for thermomechanical fatigue crack growth
- Expansion of countersunk hole K solution to include corner crack at faying surface
- Addition of optional constraint conditions for corner crack K solution in L-section
- Addition of out-of-plane bending to 2-D WF K solution for a corner crack at a hole
- Addition of pin load (bearing stress) to through crack and corner crack at offset hole with broken ligament K solutions
- New K solution for an embedded crack in a round bar
Plans for future versions include:
- Improve NASGRO installation process
- Add through-wall crack transition K-solutions for surface cracks in a cylinder and a sphere
- Add failure assessment diagram (FAD) capability for univariant WF solutions for curved through-thickness cracks
- Approximate (compounding) method for multi-site damage
- Ability to call NASGRO directly from another user program
- More improvements to EPFM module and documentation
- Additional K solutions for other unique geometries
Or call +1 210 522 3323.