← Glossary

Crack Tip Opening Angle

The widening of crack flanks during stable crack growth. A measure of a material's toughness.

Physicochemical Mechanism of Action

Fracture mechanics crack tip opening displacement describes how a crack's flanks widen during propagation. This process depends on stress and material properties.

Metallurgical Relevance & Welding Risks

Too small crack tip opening displacement can lead to stiff, crack-prone materials, which shortens component life. Too large opening can lead to uneven stress distribution and further cracking.

Shop Practice & Action Instructions

When welding, it is important to control crack tip opening displacement. This can be achieved by careful selection of welding process and materials. For high-toughness steels, the opening should be in the range of 10° to 20°.

MetallurgieSchweißtechnik

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