Fatigue and corrosion fatigue data analysis using FATDAC

This paper describes FATDAC, an interactive fatigue and corrosion FATigue Data Analysis Code. FATDAC provides a variety of analysis techniques, including: (1) an optimization process which minimizes the numerical scatter in da/dN that arises from differentiation of (a,N) data, (2) a feature for combining data from many investigators while taking into account the varying amount of crack extension or life represented by each point, (3) weighted least squares techniques for fitting standard or user-defined models, (4) analysis of corrosion fatigue effects by state-of-the-art time domain analysis techniques, and (5) methods for handling outliers, confidence bounds or intervals, printing and plotting.