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Crack tip opening displacement

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In case of the ductile materials, the crack faces moves prior to fracture and creates a blunt crack tip. Well proposed that this crack opening can be used as a measure of the toughness of the material. This parameter is known as Crack Tip Opening Displacement or commonly in the form of abbreviation CTOD

Relationship Between K and CTOD

Relation ship between G and CTOD

Relationship between J-integral and CTOD

Advantages and Disadvantages of using CTOD as a design parameter

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