The team also used the fracture toughness (KIC) to determine the critical stress intensity factor for the material. The fracture toughness is a measure of a material's resistance to fracture, and is defined as:
where σ is the applied stress, a is the crack length, and π is a constant.
da/dN = 10^(-10) * (50 MPa√m)^2.5 = 2.5 * 10^(-5) inches/cycle
The team also used the fracture toughness (KIC) to determine the critical stress intensity factor for the material. The fracture toughness is a measure of a material's resistance to fracture, and is defined as:
where σ is the applied stress, a is the crack length, and π is a constant.
da/dN = 10^(-10) * (50 MPa√m)^2.5 = 2.5 * 10^(-5) inches/cycle
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