A component made of 7075-T6 aluminum alloy has an edge crack of 1.4 mm in length. Plane strain fracture toughness of this alloy is given as 27 MPavm. Geometrical factor of the crack is given as 1.2. (a) If this alloy is subjected to uniaxial tensile stress of 380 MPa, determine whether sudden brittle fracture occurs or not. (b) Calculate the maximum allowable crack size for this component in order not to be failed in brittle manner under a stress of 1000 MPa (Density of steel 7.85 g/cm³, 9.80665 N = 1 kg). Modulus of elastisity, GPa Ultimate tensile Yield strength, Alloy strength, MPa MPa 2014 Al alloy Bronze (92Cu-8Sn) High carbon steel Pure Titanium 97 186 380 72 110 152 380 615 215 240 330 107

A component made of 7075-T6 aluminum alloy has an edge crack of 1.4 mm in length. Plane strain fracture toughness of this alloy is given as 27 MPavm. Geometrical factor of the crack is given as 1.2. (a) If this alloy is subjected to uniaxial tensile stress of 380 MPa, determine whether sudden brittle fracture occurs or not. (b) Calculate the maximum allowable crack size for this component in order not to be failed in brittle manner under a stress of 1000 MPa (Density of steel 7.85 g/cm³, 9.80665 N = 1 kg). Modulus of elastisity, GPa Ultimate tensile Yield strength, Alloy strength, MPa MPa 2014 Al alloy Bronze (92Cu-8Sn) High carbon steel Pure Titanium 97 186 380 72 110 152 380 615 215 240 330 107

Elements Of Electromagnetics

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Author:Sadiku, Matthew N. O.

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Thermal Properties of Materials

In mechanical engineering, the thermal property is represented as the physical quantity that is relevant to the application of heat. The thermal properties are evaluated by variations in any specific material due to low heat or high heat. The quantities that influence the thermal property of the materials are mass, density, temperature, and many others.

Question

A component made of 7075-T6 aluminum alloy has an edge crack of 1.4 mm in length. Plane strain
fracture toughness of this alloy is given as 27 MPavm. Geometrical factor of the crack is given as 1.2.
(a) If this alloy is subjected to uniaxial tensile stress of 380 MPa, determine whether sudden brittle
fracture occurs or not.
(b) Calculate the maximum allowable crack size for this component in order not to be failed in brittle
manner under a stress of 1000 MPa
(Density of steel 7.85 g/cm³, 9.80665 N = 1 kg).
Modulus of
elastisity,
GPa
Ultimate tensile
Yield strength,
Alloy
strength,
MPa
MPa
2014 Al alloy
Bronze (92Cu-8Sn)
High carbon steel
Pure Titanium
97
186
380
72
110
152
380
615
215
240
330
107

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