QUESTION 14 A component is fabricated from a titanium alloy that has a plane strain fracture toughness of 60MPam 1/2. It has been determined that fracture results at a stress of 400MPa when the maximum internal crack length is 14.0mm. For this same component and alloy, determine the critical internal crack length that fracture will occur at a stress level of 300MPa. O a. 12.4 mm O b.49.8 mm c. 18.7 mm O d. 24.9 mm

QUESTION 14 A component is fabricated from a titanium alloy that has a plane strain fracture toughness of 60MPam 1/2. It has been determined that fracture results at a stress of 400MPa when the maximum internal crack length is 14.0mm. For this same component and alloy, determine the critical internal crack length that fracture will occur at a stress level of 300MPa. O a. 12.4 mm O b.49.8 mm c. 18.7 mm O d. 24.9 mm

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

10. A steel rod specimen with a diameter of 10mm was subjected to a force 3000 N in the stress-strain experiment, if the area of the rod at fracture was 63.59 mm^2, determine the percentage of the sample ductility (RA). *
An aircraft component is fabricated from an aluminum alloy that has a plane strain fracture toughness of 31 MPa/m. It has been determined that fracture results at a stress of 227 MPa when the maximum (or critical) internal crack length is 2.47 mm. a) Determine the value of Yo√a for this same component and alloy at a stress level of 340 MPa when the maximum internal crack length is 1.24 mm. i MPa √//m b) Under these circumstances will the component fail? No Yes Unable to Determine 3
i need correct answer no copy paste please help
Q1. (i) Initial strain Please enter your supplied question data Q1. (ii) Eo B (hr¹Pa-¹) n IVICUITO Fracture 0.003 Please enter your answers here Your Q1. (i) Answers: 4.60E-34 Q1. (ii) 3.2 Q2. o (Pa) σo (Pa) 780,000,000 Q3. t (hr) Q2. A component is made from a metal that is known to be viscoelastic and behaves according to a secondary creep rate equation with constants of B and n provided as your input values. If the component is subjected to a constant force that results in the initial strain of E provided to you, determine the design stress for a secondary creep life of 1,000 hrs before attaining a limiting strain, &, of 0.01. Q3. If the same component is subjected to a constant displacement that results in the value of initial stress, o, provided to you, calculate the time for the stress to reduce to 200MPa. Young's modulus of the bolt is E = 200GPa.
Which statement is most accurate regarding the two materials represented in the given stress-strain diagrams? material A material B none of the choices Material B will withstand a higher load than material A but is more likely to fracture suddenly. Material B would require more total energy to fracture than material A. d. Material B is more ductile and has a lower modulus of elasticity than material A Material A will withstand more stress before plastically deforming than material B. а. b. е. с.
Q: Choose the correct answer: 1- The true stress of metallic sample which was subject to the mechanical test is equal to which of the following values?? If you know that the sample radius before and after the fracture are (6.3mm) and (0.2in.) respectively, and the failure occurs at (65*10 psi)? 660MPA, 680.03 10ʻPa, 689.04 10’KPa, 710 10ʻPa
A structural component in the form of a wide plate is to be made of a steel alloy that has a fracture toughness of 77 MPa.m ¹/2 and a yield stress of 1400 MPa. Inspection of the plate has identified an internal through the thickness crack of length 7.7 mm. Assume a value of Y=1. What is the maximum stress the component should be subjected to in order to not undergo rapid fracture.
(a) A large medium carbon steel crane hook is thought to contain penny- shaped internal cracks. If the non-destructive test equipment used on the hook is not capable of detecting cracks smaller than 20 mm diameter, determine the fracture toughness required from this steel if the safety factor on stress is to be 2. The yield stress of the AISI 1045 grade steel is 1050 MNm². Note: For this crack geometry, the 'compliance function' Y in the Stress Intensity Factor (K)) may be taken as 1. (b) A surface crack of 2.5 mm depth and a certain length is found in a thick rectangularcomponent. The component is schedule to be repaired in 6 months. The component is subjected to zero to maximum stress of 340 MPa, 50 times per hour. It was known that for this component catastrophic failure occurs when the crack size reaches 12 mm in depth. Assuming that the crack geometrical shape (aspect ratio) remains constant during crack growth, will the component fail before repair? For the crack geometry, the…
1- The ultimate tensile strength of metallic sample is equal to which of the following values? If that the initial and final radius are (0.256in.) and (0.157in.) respectively. The failure occurs at maximum weight of (84*10 gm)? What is behavior type of sample? 559*10 (N/m2), as brittle behavior 620*10 (N/m2), as brittle behavior 620*10(N/m?), as ductile behavior 560MPA, as brittle behavior
Determine the fracture load (in N) of a copper specimen subjected to a tensile load if the breaking stress is 555 N/mm2 and the cross-sectional area at fracture is 6 mm².
QUESTION 14 A precipitation strengthened aluminium alloy has the following material properties: E = 75 GPa o = 450 MPa y K = 35.4 MPa m¹/2 C On inspection of a lightweight pressure vessel, a plate made from this alloy, with a width of 35 mm, is found to contain an edge-crack with a length of 3.5 mm during a regular maintenance inspection. Under standard operating conditions, this plate is subjected to a peak stress of 125 MPa. Estimate the critical crack length (ac) for fast fracture to occur under the applied stress. Give your answer in millimetres (mm) to an accuracy of two decimal places. Do not include the units 'mm' in your answer. Only give the numerical value. The stress intensity is given by the standard equation (K=Yona) where Y= 1.12 for an edge-crack in a semi-infinite width plate. πα
9-Brittle failure of polycrystalline material is always associated with the intergranular crack propagation mechanism. Group of answer choices True False