Compact Tension (CT) Specimen, ASTM E647 Fatigue Crack Growth Testing

This model provides a Compact Tension (CT) specimen designed in accordance with the geometry requirements of ASTM E647, the standard test method for measuring fatigue crack growth rates in metallic materials.

The specimen features:

Width: W = 75 mm

Thickness: B = 12 mm

Standard CT geometry suitable for fatigue crack growth experiments

Loading pin holes according to ASTM E647 conventions

Ready for additive manufacturing, machining, educational purposes, and test planning

Suitable for finite element analysis (FEA), fixture design, and laboratory preparation

The model can be used as a reference geometry for:

Fatigue crack growth testing

Fracture mechanics research

Damage tolerance studies

Training and education in fracture mechanics

Numerical simulations and digital engineering workflows

Disclaimer:

This model is intended as a geometric reference. Users are responsible for verifying all dimensions, tolerances, material requirements, and test procedures against the latest version of ASTM E647 before manufacturing or conducting mechanical tests.