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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

NASGRO® Stress Intensity Factor Solutions

NASGRO 5.2 contains stress intensity factor solutions for more than 60 different configurations including surface, corner, embedded, and through-cracks in plates, cylinders, lugs, standard specimens, and other geometries. Many solutions support tension and bending loads, and the newer weight function solutions support general nonlinear (univariant or bivariant) stress gradients. Other K solutions can be imported from the NASBEM module or can be user-supplied via data tables. Solutions that are new beginning with the release of NASGRO Version 4.0 are indicated with the version number in parentheses in the lists below.

NASGRO Stress Intensity Factor Solutions

Through Cracks:
TC01 TC02 TC03 TC04 TC05 TC06 TC07 TC08 TC09 TC10 TC11 TC12 TC13 TC14 TC15 TC16	Through crack at center of plate Through crack at edge of plate Through crack from an offset hole in a plate Through crack from hole in a lug Through crack from hole in a plate with a row of holes *(Version 4.0)* Through crack in a sphere Through crack in a cylinder (longitudinal direction) Through crack in a cylinder (circumferential direction) Through crack from hole in a plate under combined loading Through crack from hole in a cylinder (circumferential direction) Through crack in center of plate – weight function solution *(Version 4.2)* Through crack at edge of plate – weight function solution (Version 4.2) Through crack from hole in a plate (nonlinear stress) (Version 4.1) Through crack at edge of plate – remote displacement loading (Version 5.1) Through crack at edge of variable thickness plate – weight function solution (Version 5.1) Through crack in curved panel with bulging (Version 5.2)
Embedded Cracks:
EC01 EC02	Embedded crack in a plate Embedded crack, offset, in a plate
Corner Cracks:
CC01	Corner crack in a rectangular plate
CC02	Corner crack from offset hole in a plate
CC03	Corner crack from hole in a lug
CC04	Corner crack from hole in a plate (one or two cracks)
CC05	Corner crack in a rectangular plate subjected to bivariant stress (Version 4.0) (superseded by CC09)
CC07	Corner crack from hole in a plate (new soln for one crack, tension and pin loads)
CC08	Corner crack from hole in a plate subjected to nonlinear stress (Version 4.1)
CC09	Corner crack in a rectangular plate subjected to bivariant stress (Version 4.2)
CC10	Corner crack from hole in a plate subjected to bivariant stress (Version 5.0)
CC11	Corner crack in a plate subjected to univariant stress (Version 5.2)
Surface Cracks:
SC01 SC02 SC03 SC04 SC05 SC06 SC07 SC08 SC09 SC10 SC11 SC12 SC13 SC14 SC15 SC17 SC18 SC19	Surface crack in a rectangular plate – tension and/or bending Surface crack in a rectangular plate – nonlinear stress Surface crack in a spherical pressure vessel Longitudinal surface crack in a hollow cylinder – nonlinear stress Thumbnail crack in a hollow cylinder Circumferential crack in a hollow cylinder – nonlinear stress Thumbnail crack in a solid cylinder Thumbnail crack in a threaded, solid cylinder Circumferential crack at thread root in a cylinder Circumferential crack in a threaded pipe – nonlinear stress Surface crack from hole in a plate (one or two cracks) Surface crack from hole in a lug (one or two cracks) Surface crack in bolt head fillet - Shear bolt Surface crack in bolt head fillet - Tension bolt Surface crack in a plate subjected to bivariant stress (Version 4.0) (superseded by SC19) Surface crack in a rectangular plate – nonlinear stress (Version 4.1) Surface crack from hole in a plate – nonlinear stress (Version 5.0) Surface crack in a plate, bivariant weight function solution (Version 5.1)
Standard Specimens:
SS01 SS02 SS03 SS04 SS05 SS06 SS07 SS08 SS09 SS10 SS11 SS12	Center-cracked tension specimen M(T) Compact tension specimen C(T) Disc-shaped compact tension specimen DC(T) Arc-shaped tension specimen A(T) Three-point bend specimen SE(B) Edge cracked tension specimen SE(T) – constrained ends Notched round bar specimen R-bar(T) – circumferential crack Notched plate with a surface crack Notched plate with a corner crack Notched plate with a through crack Corner crack in a plate from symmetric hole Eccentrically-loaded single edge crack tension specimen ESE(T) (Version 5.0)
Data Tables:
DT01 DT02 DT03 DT04	One-dimensional data table for through cracks Two-dimensional data table for through cracks Two-dimensional data table for part-through cracks Two-dimensional data table for part-through cracks from hole or fillet
Polynomial Series:
PS01	F0 = C0 + C1u + C2u*2 + ... + Cnun where u = (a/D)m
Boundary Element Models:
BE02 BE03	Two through cracks from either side of an offset hole in a plate (Version 4.0) One through crack, one corner crack on either side of an offset hole in a plate (Version 4.0)

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