Hackle
Definition
Fracture-surface lines approximately parallel to local crack growth. Record the relevant surface and geometry. One visible line is not automatically a complete direction or sequence determination. Damage and competing fracture features can limit interpretation.
- Context
- Fracture examination
For example, several suitably preserved fracture features may be assessed together before proposing a local direction of crack propagation.
Related terms
- Radial Crack
- A crack that runs outward from the point of impact, like spokes of a wheel. The 3R rule applies: Radial cracks have...
- Relative Sequence
- An ordering supported by preserved relationships, without a measurement of elapsed time. State which physical relationship supports the proposed sequence. An order...
- Wallner Lines
- Wallner lines are curved fracture-surface markings associated with interactions between a moving crack front and elastic disturbances under suitable conditions. They can...