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- prac with a through thickness crack of length 2a = 20 mm ected to a...
- prac with a through thickness crack of length 2a = 20 mm ected to a stress of 400 MPa normal to the crack. If the yield strength of the steel is 1500 MPa, what is the plastic zone size and the stress intensity factor for the crack. Assume that the plate is infinitely wide.
A steel (KIC = 132 MPa√m) ship deck plate is 30 mm thick and 12 m...
A steel (KIC = 132 MPa√m) ship deck plate is 30 mm thick and 12 m wide. It is loaded with a uniaxial tensile stress of 50 MPa and is in an enviroment below the ductile-to-brittle transition temperature. If a crack of length 2a=65 mm is present, find the factor of safety with respect to failure under the current loading conditions and estimate the tensile stress at which catastrophic failure will occur. You may assume β = 1.
A plate 92 mm wide, 184 mm long, and 11.04 mm thick is loaded in tension...
A plate 92 mm wide, 184 mm long, and 11.04 mm thick is loaded in tension in the direction of the length. The plate contains a crack as shown in the figure below with the crack length of 14.7 mm. The material is steel with Kic=80 MPa (m) (121 and Sy=950 MPa 7.0 6.0 5.0 4.0 3.0 1/b=0.5 1.0 2.0 10 OB 04 06 ON wibratio Determine the maximum possible load before the plate has uncontrollable crack growth. The maximum...
A plate 90 mm wide, 180 mm long, and 10.8 mm thick is loaded in tension...
A plate 90 mm wide, 180 mm long, and 10.8 mm thick is loaded in tension in the direction of the length. The plate contains a crack as shown in the figure below with the crack length of 14.4 mm. The material is steel with Kic= 80 MPa (m)(12) and Sy =950 MPa. 7.0 6.0 5.0 4.0 3.0 h/b=0.5 1.0 2.0 1.0 0.2 0.6 0.8 0.4 a/b ratio Determine the maximum possible load before the plate has uncontrollable crack growth....
A harmless or harmful crack? (20) routine inspection, a crack was detected in a cylindrical pressure vessel having a wall thickness 186 mm. characteristic dimension (a) of this crack was measured...
A harmless or harmful crack? (20) routine inspection, a crack was detected in a cylindrical pressure vessel having a wall thickness 186 mm. characteristic dimension (a) of this crack was measured to be 0.025 m and it was acted on by a hoop stress -120MPa. For this crack configuration, the stress intensity factor may be calculated using π.a auwhere O-2.93 racture toughness of the vessel material is KIc -59MPavm e need to worry about this crack? late the factor of...
A plate 95 mm wide, 190 mm long, and 11.4 mm thick is loaded in tension...
A plate 95 mm wide, 190 mm long, and 11.4 mm thick is loaded in tension in the direction of the length. The plate contains a crack as shown in the figure below with the crack length of 15.2 mm. The material is steel with KIC= 80 MPa (m)(1/2) and Sy= 950 MPa. 6.0 5.0 4.0 3.0 h/b=0.5 1.0 2.0 1.0 0.2 0.4 a/b ratio Ignoring stress concentration, determine the maximum possible load that can be applied to the plate...
Consider the metal specimen with KIC =64 MPa-sqrt(m); edge crack measures 15.398 mm; Y = 1.05;...
Consider the metal specimen with KIC =64 MPa-sqrt(m); edge crack measures 15.398 mm; Y = 1.05; Paris’ m = 3.1 and Paris’ A = 3.2E-12 meters / (cycle-MPa-sqrt(m)) ^3.1). Use Excel and Goal Seek to estimate the cyclic tensile stress amplitude that results in fatigue life of 0.534E6 cycles.
Consider the metal specimen with KIC =64 MPa-sqrt(m); edge crack measures 15.398 mm; Y = 1.05;...
Consider the metal specimen with KIC =64 MPa-sqrt(m); edge crack measures 15.398 mm; Y = 1.05; Paris’ m = 3.1 and Paris’ A = 3.2E-12 meters / (cycle-MPa-sqrt(m)) ^3.1). Use Excel and Goal Seek to estimate the cyclic tensile stress amplitude that results in fatigue life of 0.534E6 cycles.
3.2 A steel tension bar 8-mm thick and 50-mm wide with an initial single- edge crack...
3.2 A steel tension bar 8-mm thick and 50-mm wide with an initial single- edge crack of 10-mm long is subjected to an uniaxial stress o = 140 MPa. a) Determine the stress intensity factor K). Is the crack stable? b) Determine the critical crack size, and c) determine the critical load. Data: Kic = 60 MPaym. [Solution: a) 34 MPa, b) 31.1 mm, and c) 98.84 kN).
A plate 125 mm wide, 250 mm long and 14 mm thick is loaded in tension...
A plate 125 mm wide, 250 mm long and 14 mm thick is loaded in tension in the direction of the length. The plate contains a crack as shown in Figure 5-26 (textbook) with a crack length of 25 mm. The material is steel with Kic - 30 MPa.mQS and Sy- 950 Mpa. Determine the maximum possible load that can be applied before the plate has uncontrollable crack growth. a. 201 357 6.417 d. 124 .229
- prac with a through thickness crack of length 2a = 20 mm ected to a stress of 400 MPa normal to the crack. If the yield strength of the steel is 1500 MPa, what is the plastic zone size and the stress intensity factor for the crack. Assume that the plate is infinitely wide.
A plate 92 mm wide, 184 mm long, and 11.04 mm thick is loaded in tension in the direction of the length. The plate contains a crack as shown in the figure below with the crack length of 14.7 mm. The material is steel with Kic=80 MPa (m) (121 and Sy=950 MPa 7.0 6.0 5.0 4.0 3.0 1/b=0.5 1.0 2.0 10 OB 04 06 ON wibratio Determine the maximum possible load before the plate has uncontrollable crack growth. The maximum...
A plate 90 mm wide, 180 mm long, and 10.8 mm thick is loaded in tension in the direction of the length. The plate contains a crack as shown in the figure below with the crack length of 14.4 mm. The material is steel with Kic= 80 MPa (m)(12) and Sy =950 MPa. 7.0 6.0 5.0 4.0 3.0 h/b=0.5 1.0 2.0 1.0 0.2 0.6 0.8 0.4 a/b ratio Determine the maximum possible load before the plate has uncontrollable crack growth....
A harmless or harmful crack? (20) routine inspection, a crack was detected in a cylindrical pressure vessel having a wall thickness 186 mm. characteristic dimension (a) of this crack was measured to be 0.025 m and it was acted on by a hoop stress -120MPa. For this crack configuration, the stress intensity factor may be calculated using π.a auwhere O-2.93 racture toughness of the vessel material is KIc -59MPavm e need to worry about this crack? late the factor of...
A plate 95 mm wide, 190 mm long, and 11.4 mm thick is loaded in tension in the direction of the length. The plate contains a crack as shown in the figure below with the crack length of 15.2 mm. The material is steel with KIC= 80 MPa (m)(1/2) and Sy= 950 MPa. 6.0 5.0 4.0 3.0 h/b=0.5 1.0 2.0 1.0 0.2 0.4 a/b ratio Ignoring stress concentration, determine the maximum possible load that can be applied to the plate...
3.2 A steel tension bar 8-mm thick and 50-mm wide with an initial single- edge crack of 10-mm long is subjected to an uniaxial stress o = 140 MPa. a) Determine the stress intensity factor K). Is the crack stable? b) Determine the critical crack size, and c) determine the critical load. Data: Kic = 60 MPaym. [Solution: a) 34 MPa, b) 31.1 mm, and c) 98.84 kN).
A plate 125 mm wide, 250 mm long and 14 mm thick is loaded in tension in the direction of the length. The plate contains a crack as shown in Figure 5-26 (textbook) with a crack length of 25 mm. The material is steel with Kic - 30 MPa.mQS and Sy- 950 Mpa. Determine the maximum possible load that can be applied before the plate has uncontrollable crack growth. a. 201 357 6.417 d. 124 .229
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