In materials science, fracture toughness is a property which describes the ability of a material to resist fracture, and is one of the most important properties of any material for many design applications. The linear-elastic fracture toughness of a material is determined from the stress intensity factor KI at which a thin crack in the material begins to grow. It is denoted KIc and has the units of N/ ^3/2. Plastic-elastic fracture toughness is denoted by JIc, with the unit of J/cm^2 and is a measurement of the energy required to grow a thin crack.
In materials science and metallurgy, toughness is the ability of a material to absorb energy and plastically deform without fracturing. One definition of material toughness is the amount of energy per unit volume that a material can absorb before rupturing. It is also defined as a material's resistance to fracture when stressed.
Toughness requires a balance of strength and ductility.
For two-dimensional problems (plane stress, plane strain, antiplane shear) involving cracks that move in a straight path, the mode I stress intensity factor
KI is related to the energy release rate, also in modeI, GI by
GI= (KI) ^2/E'
where E is the Young's modulus and E'=E for plane stress and {\displaystyle E'= E/(1-nu ^2) for plane strain.
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web.mit.edu/course/3/3.11/www/modules/ss.pdf
In materials science, fracture toughness is a property which describes the ability of a material to resist fracture, and is one of the most important properties of any material for many design applications. The linear-elastic fracture toughness of a material is determined from the stress intensity factor KI at which a thin crack in the material begins to grow. It is denoted KIc and has the units of N/ ^3/2. Plastic-elastic fracture toughness is denoted by JIc, with the unit of J/cm^2 and is a measurement of the energy required to grow a thin crack.
In materials science and metallurgy, toughness is the ability of a material to absorb energy and plastically deform without fracturing. One definition of material toughness is the amount of energy per unit volume that a material can absorb before rupturing. It is also defined as a material's resistance to fracture when stressed.
Toughness requires a balance of strength and ductility.
For two-dimensional problems (plane stress, plane strain, antiplane shear) involving cracks that move in a straight path, the mode I stress intensity factor
KI is related to the energy release rate, also in modeI, GI by
GI= (KI) ^2/E'
where E is the Young's modulus and E'=E for plane stress and {\displaystyle E'= E/(1-nu ^2) for plane strain.
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