Documentation and Supporting Information
The following documents are available to provide assistance with many of AFGROW's features and options:
Manuals
AFGROW Component Object Model (COM) Manual
Reference for the development of AFGROW automation software,written by James Harter, Cordell Smith and Alexander Litvinov
Presentations
Pipeline Steel Tabular da/dN Curves with Validations, Hydrogen Application
This paper reviews the historical basis for Harter-T method tabular crack growth rate model, provide details of the development and considerations for pipeline steel curves, discuss important modelling issues, validation work completed to date, and include the practical application example of hydrogen-charged pipeline steel fatigue growth
, written by James Harter and Lyndon Lamborn (Enbridge)
AFGROW Training at ASIP 2019
AFGROW Version 5.3.4, New Capabilities & Features
, written by James Harter
Broad Application for Modeling
Failure (BAMF) Training
, presented by Joshua Hodges, Hill Engineering
AFGROW Training at ASIP 2018
AFGROW fundementals and new capabilities, written by James Harter and Alexander Litvinov
COM Automation
Explains the basic features and capabilities of AFGROW's COM interface, written by Alexander Litvinov
Building AFGROW Plug-Ins
Step by step instructions for the development of user-defined stress intensity solution plug-in modules, written by James Harter and Kyle Honeycutt
Accurate Stress Intensity Factor Solutions for
Unsymmetric Corner Cracks at a Hole (Aging A/C Conference-2000)
Explanation of the FEM modeling approach used to develop the Advanced multiple corner cracked hole K-solutions, written by Drs. Scott Fawaz and Borje Andersson
Experimental Verification of Stress Intensity Factor
Solutions for Corner Cracks at a Hole Subject to General Loading (ICAF-2003)
Documents work performed to verify the Advanced multiple corner cracked K-solutions, written by Drs. Fawaz, Andersson, and Newman
Using the World's Largest Stress Intensity Factor Database
for Fatigue Life Predictions (International Conf. on DTA of A/C Structures-2007)
Documents the use of the Advanced multiple corner cracked K-solution to perform life predictions, written by Dr. Fawaz
The Effect of Stress Intensity Factor Models on Inspection
Intervals (International Conf. on DTA of A/C Structures (ASIP-2007)
Compares the effect of classic and advanced K-solutions on the predicted life of coupon specimens under constant amplitude and spectrum loading
References
AFGROW Flow Chart
Beta Factors for Collinear Asymmetrical Cracks Emanating from an Offset Circular Hole in a Rectangular Plate
This paper presents the result of an independent investigation by the Australian Defence Science and Technology Group for asymmetric cracks at offset holes in a plate. The solutions show excellent agreement with the Advanced K-solutions currently in AFGROW.
Stress Intensity Solutions for Continuing Damage
Reference for the continuing damage solution currently used in AFGROW, presented by James Harter, AFRL/RBSM at the 2010 Aircraft Airworthiness & Sustainment (AA&S) Conference.
Stress-Intensity Factor Equations for Cracks in Three-Dimensional
Bodies Subjected to Tension and Bending Loads
The classic Newman-Raju closed-form stress intensity factor reference (1986)
Modification of Stress Intensity Factor Equation for Corner
Cracks From a Hole Under Remote Bending
Corrections to the classic Newman-Raju equations for out of plane bending, writen by Drs. Wei Zhao and J.C. Newman, Jr.
Development of Weight Functions and Computer Integration
Procedures for Calculating Stress Intensity Factors Around Cracks Subjected to Complex Stress Fields
Reference for the weight function solutions currently used in AFGROW, written by Prof. G. Glinka
Hsu Model
Documentation for the Hsu retardation model implemented in AFGROW, written by Tom Deiters
Application of Multiple Through Cracks in Plates
With and Without Holes
Documentation for the Advanced multiple through crack K-solutions used in AFGROW, written by James Harter and Deviprasad Taluk
Implementing Models and Libraries - External
K-Solver Demonstration
Documents work done to demonstrate the feasibility of using AFGROW and an external K-solver (StressCheck) interactively to perform life predictions for complex geometries, written by Craig Brooks, Kyle Honeycutt, and Scott Prost Domasky
Fatigue Crack Growth Database for Damage Tolerance Analysis
Documentation of the NASGRO material database, written by R.G. Forman, V. Shivakumar, J.W. Cardinal, L.C. Williams, and P.C. McKeighan
