KEY TERMS: NASGRO FLAGRO life
assessment crack
growth fracture mechanics damage
tolerance structural
integrity analysis materials database consortium software stress
intensity factor boundary
element method fracture
control critical
crack size NASA
Code Overview
What's New in:
The NASGRO® fracture mechanics and
fatigue crack growth analysis software is a suite of computer
programs linked together by a graphical user interface.
NASFLA, the central life
assessment code, contains libraries of stress intensity factor solutions and
material properties and
performs the crack growth analyses.
NASBEM is a two-dimensional (2-D)
boundary element (BEM) code used to calculate stress intensity factors or
stress fields in 2-D geometries.
NASMAT is an extensive database of
material data for fatigue crack growth and fracture analysis.
NASFORM is a fatigue crack formation (initiation)
analysis module containing a stress-life model and four different
strain-life models.
NASGRO is operable on
Windows 95/98/2000/XP and Windows 7. NASGRO is compatible with 32-bit and
64-bit machines.
NASGRO executable programs, DLLs, materials files,
and spectrum files require about 230 megabytes of disk space. In addition,
over 20 megabytes of disk space are required for files that
are generated during the execution of the program.
Southwest Research Institute®
(SwRI®) is an independent, nonprofit, applied engineering and physical
sciences research and development organization with
11
technical divisions using
multidisciplinary approaches to problem solving. The Institute
occupies 1,200 acres and provides
nearly two million square feet of laboratories, test facilities, workshops, and offices for more than
2,973
employees who perform contract work for industry and government clients.
NASGRO 
mechanics
Structural Engineering Department