FS-Fracture performs basic defect assessments based on the requirements of BS 7910:2005 "Guidance methods for assessing the acceptability of flaws in metallic structures".

• Simple Operation - All input data is input using analysis specific forms each with easily recognisable parameters.

• Fracture - (Level 1A, 2A, 2B, 3A & 3B) assessments for surface, embedded and through thickness flaws.

• Fatigue - Crack growth fatigue predictions for surface, embedded and through thickness flaws using the recommended fracture mechanics principles of BS7910:2005.

Fatigue - Stress Life

• SN Curves
  Standard or user defined curves.
• As -Welded Components
  Optional wall thickness correction
• Notched Components
  Heywood and Peterson infinite life notch alleviation. Optional Heywood notch alleviation at finite life.
• Mean Stress Effects
  Goodman, Gerber, Soderberg. Optional Heywood notch alleviation on mean stress.

Fatigue - Strain Life

• SE Curves
  User defined total life curves
• Notched Alleviation
  Heywood and Peterson infinite life notch alleviation
• Mean Stress Effects
  Utilises SAE recommended method
• Notched Plasticity
  Neuber or Energy method approaches employed

Stress Histories
Stress histories are read from user defined text files using various formats.

Spectral Methods (SeaState)
Fatigue damage from PDFs (Jonswop etc) processed in conjunction with user defined transfer function (RAOs)

Raw Data Processing
Stress histories can also be produced from by processing raw stress/strain data.

• Peak/valley identification
• ‘Rainflow ‘ closed strain cycle counting
• Stress histograms produced
• Mean information in triangular format

Interfaces with FS2000 post-processors
Interprets the stress range output from FS-OffFat and the standard stress range extraction module of FS2000'