2. A material possesses a fracture toughness of 48 MPa·m½. Determine the critical size (length) of...
2. A material possesses a fracture toughness of 48 MPa·m½. Determine the critical size (length) of the crack if is subjected to a critical far field stress of 1460 MPa. Assume infinite geometry and include a drawing.
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2. A material possesses a fracture toughness of 48 MPa·m½.
Determine the critical size (length) of...
1. A large plate is fabricated from a steel alloy that has a plane strain fracture toughness of 8...
1. A large plate is fabricated from a steel alloy that has a plane strain fracture toughness of 82.4 MPavm. If the plate is exposed to a tensile stress of 345 MPa during service use, determine the minimum length of a surface crack that will lead to fracture. Assume a value of 1.0 for Y. Maximum stress at tip of elliptically shaped crack Pt 2Ery, 1/2 critical stress required for crack propagation in a brittle material πα KIe YoeVra Fracture...
Deformation and Fracture Mechanics 1. (Fracture toughness) (a) An AISI 4340 steel plate has a width...
Deformation and Fracture Mechanics
1. (Fracture toughness) (a) An AISI 4340 steel plate has a width W of 30 cm and has a central crack 2a of 3 mm. The plate is under a uniform stress, ?·This steel has a Kic value of 50 m2. Find the maximum stress for this crack length. (b) If the operating stress is 1500 MPa, compute the maximum crack size that the steel may have without failure. 2. (Plastic zone radius) The size of...
A specimen of a 4340 steel alloy with a plane strain fracture toughness of 54.8 MPaym...
A specimen of a 4340 steel alloy with a plane strain fracture toughness of 54.8 MPaym (50 ksi n) is exposed to a stress of 1225 MPa (177700 psi). Assume that the parameter Y has a value of 1.04 (a) If the largest surface crack is 0.7 mm (0.02756 in.) long, determine the critical stress C- MPa (b) Will this specimen experience fracture?
An aircraft component is fabricated from an Al alloy that has a plane strain fracture toughness...
An aircraft component is fabricated from an Al alloy that has a plane strain fracture toughness of 32 MPa·m1/2. It has been determined that fracture results at a stress of 235 MPa when the maximum internal crack length is 1.8 mm. For the same component and alloy, will fracture occur at a stress level of 310 MPa when the maximum internal crack length is 0.9 mm?
A large plate is fabricated from a steel alloy that has a plane strain fracture toughness...
A large plate is fabricated from a steel alloy that has a plane strain fracture toughness of 75 MPam (68.25 ksi vin.). If the plate is exposed to a tensile stress of 347 MPa (50330 psi) during use, determine the minimum length of a surface crack that will lead to fracture. Assume a value of 0.94 for Y. mm
2. An aircraft component is fabricated from an aluminum alloy that has a plane strain fracture...
2. An aircraft component is fabricated from an aluminum alloy that has a plane strain fracture toughness of 35 MPa m. It has been determined that fracture results at a stress of 250 MPa when the maximum (or critical) internal crack length is 2.0 mm. For this same component and alloy, will fracture occur at a stress level of 325 MPa when the maximum internal crack length is 1.0 mm? (10 points)
1. A large, thick plate contains a through crack with total crack length 2a, lying in the x-axis (figure below). The size of the specimen is much larger than the crack. The toughness of the materi...
1. A large, thick plate contains a through crack with total crack length 2a, lying in the x-axis (figure below). The size of the specimen is much larger than the crack. The toughness of the material is Gc-11.7 KJ / m2 , the Young's modulus of the material is E-200 GPa, the Poisson's ratio v 0.25, and the yield stress is sufficiently high. If the remote stresses are σ o, :: 200 MPa. Try-100 MPa, what should be the critical...
please answer both the questions Question 2 A titanium tube 200mm diameter and 5mm wall thickness...
please answer both the questions
Question 2 A titanium tube 200mm diameter and 5mm wall thickness is subjected to an internal pressure of 13.5MPa. The tube contains a longitudinal crack along its full length. Assuming that the tube can be approximated by a single edge notched plate subjected to a tensile stress equal to the hoop stress in the tube determine the crack length to cause failure. You may assume that the material fracture toughness is 55 MPavm. Please provide...
MECHANICS OF ENGINEERING MATERIALS. FRACTURE TOUGHNESS. INTERNAL CRACKS 2. A 1 meter long metal bar with...
MECHANICS OF ENGINEERING MATERIALS. FRACTURE TOUGHNESS. INTERNAL
CRACKS
2. A 1 meter long metal bar with 40 mm diameter is to withstand an applied tensile load of 630,000 N along the longitudinal direction without yielding. It is also required that the total amount of deformation is not to exceed 2.6 mm. Select the suitable material(s) from the following table for this application and justify your selection(s). For materials that meet the above two requirements, calculate the maximum length of allowable...
1-Determine the % elongation, yield stress and ultimate tensile strength of the material tested above 2-Calculate...
1-Determine the % elongation, yield stress and ultimate tensile
strength of the material tested above
2-Calculate the elastic modulus of the material tested above
3-If a 200mm cylindrical rod of the material tested above, with
radius 20mm, was subjected to a tensile load of 200kN, what would
the length be?
4-An underground wastewater steel pipe with 2mm walls carries an
ammonia solution of 40 g/m3. The pipe is in contact with
groundwater (assume 0 g/m3 ammonia). Determine the
diffusion rate...
1. A large plate is fabricated from a steel alloy that has a plane strain fracture toughness of 82.4 MPavm. If the plate is exposed to a tensile stress of 345 MPa during service use, determine the minimum length of a surface crack that will lead to fracture. Assume a value of 1.0 for Y. Maximum stress at tip of elliptically shaped crack Pt 2Ery, 1/2 critical stress required for crack propagation in a brittle material πα KIe YoeVra Fracture...
Deformation and Fracture Mechanics
1. (Fracture toughness) (a) An AISI 4340 steel plate has a width W of 30 cm and has a central crack 2a of 3 mm. The plate is under a uniform stress, ?·This steel has a Kic value of 50 m2. Find the maximum stress for this crack length. (b) If the operating stress is 1500 MPa, compute the maximum crack size that the steel may have without failure. 2. (Plastic zone radius) The size of...
A specimen of a 4340 steel alloy with a plane strain fracture toughness of 54.8 MPaym (50 ksi n) is exposed to a stress of 1225 MPa (177700 psi). Assume that the parameter Y has a value of 1.04 (a) If the largest surface crack is 0.7 mm (0.02756 in.) long, determine the critical stress C- MPa (b) Will this specimen experience fracture?
A large plate is fabricated from a steel alloy that has a plane strain fracture toughness of 75 MPam (68.25 ksi vin.). If the plate is exposed to a tensile stress of 347 MPa (50330 psi) during use, determine the minimum length of a surface crack that will lead to fracture. Assume a value of 0.94 for Y. mm
2. An aircraft component is fabricated from an aluminum alloy that has a plane strain fracture toughness of 35 MPa m. It has been determined that fracture results at a stress of 250 MPa when the maximum (or critical) internal crack length is 2.0 mm. For this same component and alloy, will fracture occur at a stress level of 325 MPa when the maximum internal crack length is 1.0 mm? (10 points)
1. A large, thick plate contains a through crack with total crack length 2a, lying in the x-axis (figure below). The size of the specimen is much larger than the crack. The toughness of the material is Gc-11.7 KJ / m2 , the Young's modulus of the material is E-200 GPa, the Poisson's ratio v 0.25, and the yield stress is sufficiently high. If the remote stresses are σ o, :: 200 MPa. Try-100 MPa, what should be the critical...
please answer both the questions
Question 2 A titanium tube 200mm diameter and 5mm wall thickness is subjected to an internal pressure of 13.5MPa. The tube contains a longitudinal crack along its full length. Assuming that the tube can be approximated by a single edge notched plate subjected to a tensile stress equal to the hoop stress in the tube determine the crack length to cause failure. You may assume that the material fracture toughness is 55 MPavm. Please provide...
MECHANICS OF ENGINEERING MATERIALS. FRACTURE TOUGHNESS. INTERNAL
CRACKS
2. A 1 meter long metal bar with 40 mm diameter is to withstand an applied tensile load of 630,000 N along the longitudinal direction without yielding. It is also required that the total amount of deformation is not to exceed 2.6 mm. Select the suitable material(s) from the following table for this application and justify your selection(s). For materials that meet the above two requirements, calculate the maximum length of allowable...
1-Determine the % elongation, yield stress and ultimate tensile
strength of the material tested above
2-Calculate the elastic modulus of the material tested above
3-If a 200mm cylindrical rod of the material tested above, with
radius 20mm, was subjected to a tensile load of 200kN, what would
the length be?
4-An underground wastewater steel pipe with 2mm walls carries an
ammonia solution of 40 g/m3. The pipe is in contact with
groundwater (assume 0 g/m3 ammonia). Determine the
diffusion rate...
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