SmartDT Capabilities
General Capabilities of SmartDT
Probability Calculations

Single flight probability of failure (Lincoln and Freudenthal)

Percent cracks detected at inspections
Random Variables

ai, Kc, EVD, yield strength, ultimate strength, da/dN, hole diameter, hole offset, crack aspect ratio
Computational Implementation

Standard Fortran 95/03/08, Windows, Mac OS and Linux â€‹

HPC Implementation (parallel and vectorized)
Probabilistic Methods

â€‹Standard Monte Carlo (multithreaded) â€‹

Numerical integration â€‹

Weighted Branch Integration Method â€‹

Adaptive Multiple Importance Sampling
Crack Growth

Master curve (ai, Kc and yield strength) interpolation (user input) â€‹

Through, Corner, Surface cracks â€‹

HyperGrow (efficient crack growth analysis) â€‹

Failure due to fracture instability or net section yield
Extreme Value Distribution

User input, e.g., Gumbel, Frechet , and WeibullMax. â€‹

Ultimate/Limit load (deterministic) â€‹

Computed from exceedance curves, weight matrix, etc. (Gumbel, Frechet , and WeibullMax)â€‹
Inspection Capabilities

Any number of inspections â€‹

Arbitrary repair crack size distribution (lognormal, Weibull, deterministic, tabular) â€‹

Arbitrary POD (lognormal, deterministic, tabular) â€‹

User defined probability of inspection â€‹

Different repair scenarios between inspections
Probabilistic Database

Material Properties (Kc, da/dN, yield, ultimate) Aluminum, steel, titanium â€‹

Equivalent initial flaw size â€‹

Probability of Detection Curve â€‹

Hole diameter â€‹

Edge distance â€‹

Exceedance curves
Loading Generation

Computed from exceedance curves (Internal library and user exceedance option)

Weighted usage available. â€‹

Flight Duration and weight matrices, design load limit factors, oneg stress, and ground stress â€‹

Stresses and/or flights randomizations â€‹

Spectrum editing option (Rainflow, rise/fall, Dead band) â€‹

Userdefined spectra (Afgrow format)â€‹â€‹â€‹â€‹â€‹â€‹

Probability calculations
–Single flight probability of failure (Lincoln and Freudenthal)
â€‹
–Percent cracks detected at inspections
â€‹

Probabilistic methods
–Standard Monte Carlo (multithreaded)
â€‹
–Numerical integration
â€‹
–Weighted Branch Integration Method
â€‹
–Adaptive Multiple Importance Sampling
â€‹

Random variables
–ai, Kc, EVD, yield strength, ultimate strength, da/dN, hole diameter, hole offset, crack aspect ratio
â€‹

Crack growth
–Master curve (ai, Kc and yield strength) interpolation (user input)
â€‹
–Through, Corner, Surface cracks
â€‹
–HyperGrow (efficient crack growth analysis)
â€‹
–Failure due to fracture instability or net section yield
â€‹

Extreme Value Distribution
–User input, e.g., Gumbel, Frechet , and WeibullMax.
â€‹
–Ultimate/Limit load (deterministic)
â€‹
–Computed from exceedance curves, weight matrix, etc. (Gumbel, Frechet , and WeibullMax)â€‹
â€‹

Inspection capabilities
–Any number of inspections
â€‹
–Arbitrary repair crack size distribution (lognormal, Weibull, deterministic, tabular)
â€‹
–Arbitrary POD (lognormal, deterministic, tabular)
â€‹
–User defined probability of inspection
â€‹
–Different repair scenarios between inspections
â€‹

Probabilistic Database
–Material Properties (Kc, da/dN, yield, ultimate) Aluminum, steel, titanium
â€‹
–Equivalent initial flaw size
â€‹
–Probability of Detection Curve
â€‹
–Hole diameter
â€‹
–Edge distance
â€‹
–Exceedance curves
â€‹

Loading Generation
–Computed from exceedance curves (Internal library and user exceedance option) – Weighted usage available.
â€‹
–Flight Duration and weight matrices, design load limit factors, oneg stress, and ground stress
â€‹
–Stresses and/or flights randomizations
â€‹
–Spectrum editing option (Rainflow, rise/fall, Dead band)
â€‹
–Userdefined spectra (Afgrow format)â€‹â€‹â€‹â€‹â€‹â€‹
â€‹

Computational Implementation
–Standard Fortran 95/03/08, Windows, Mac OS and Linux
â€‹
–HPC Implementation (parallel and vectorized)
â€‹â€‹