A large crankshaft made of cast iron with fracture toughness (Kc = 50 MNm-3/2) undergoes cyclic...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
A large crankshaft made of cast iron with fracture toughness (Kc = 50 MNm-3/2) undergoes cyclic tensile stress, 250 MPa, and compressive stress, 80 MPa. Before using the material, an inspection with ultrasonic techniques was carried out and the largest surface crack was found to be 3 mm in length. For the cast iron material, the Paris law constants are (A = 1.2x10 - 12 m /(MNm-3/2)n per cycle and n = 2.5. Calculate the number of cycles to failure (Nf). Hint: This problem requires you to determine the critical crack length (af). Take Y = 1. A large crankshaft made of cast iron with fracture toughness (Kc = 50 MNm-3/2) undergoes cyclic tensile stress, 250 MPa, and compressive stress, 80 MPa. Before using the material, an inspection with ultrasonic techniques was carried out and the largest surface crack was found to be 3 mm in length. For the cast iron material, the Paris law constants are (A = 1.2x10 - 12 m /(MNm-3/2)n per cycle and n = 2.5. Calculate the number of cycles to failure (Nf). Hint: This problem requires you to determine the critical crack length (af). Take Y = 1.
Expert Answer:
Answer rating: 100% (QA)
To find the number of cycles to failure Nf for the given large crankshaft made of cast iron we need ... View the full answer
Related Book For
Posted Date:
Students also viewed these mechanical engineering questions
-
The SFA Model helps in determining the ___________ of strategic options. a. Financial requirements and constraints b. Internal resources and capabilities c. Market demand and potential d. Regulatory...
-
Here are the abbreviated financial statements for Planners Peanuts: Income Statement, 2015 Sales Costs $2,004 1,749 Net income $ 255 Balance Sheet, Year-End 2015 S3,818 2014 $999 2014 2015 $1,030...
-
The pilot of a small boat charts a course such that the boat will always be equidistant from an upcoming rock and the shoreline. Describe the path of the boat. If the rock is 2 miles offshore, write...
-
Which plot in Figure 1-10-A, B, C, D, or E-represents the chirping rate of the snowy tree cricket? In Figure 1-10 60 .C 40 -D 20 50 60 70 80 90 Temperature (degrees Fahrenheit) Chirping rate versus...
-
Prove the invalidity of the following, in each case using the suggested notation: Only students are members. Only members are welcome. Therefore all students are welcome. (Sx, Mx, Wx)
-
Refer to Googles financial statements in Appendix A to compute its equity ratio as of December 31, 2015, and December 31, 2014. Data From Google Financial Statement Appendix A Google Inc....
-
Wayne Hills Hospital in tiny Wayne, Nebraska, faces a problem common to large, urban hospitals as well as to small, remote ones like itself. That problem is deciding how much of each type of whole...
-
As a successful entrepreneur and CEO, you are considering making some financial decisions for your engineering company. Examining the financial report of your company, you notice: . The upgrade of...
-
Two quality control technicians measured the surface finish of a metal part, obtaining the data in Table 4E.1. Assume that the measurements are normally distributed. (a)Test the hypothesis that the...
-
Problem Water is heated in a pan to the boiling point of 100C. The water vapor pressure is maintained at 1 atmosphere. (a) [5 points] Find the flux of water molecules (number per cm?) coming out of...
-
Value of Subletting - Assume that a tenant wants to sublet a portion of their space to another tenant. The current tenant is paying $20/PSF/YR, while the new sublet tenant would be paying $25/PSF/YR...
-
Linda Lassiter is meeting with the accountant assigned to help her team create cost estimates for her project to implement a new Customer Relations Management (CRM) system. They determine the project...
-
Find dx d'y for -0 y = tan(x)
-
Solve the system. Express your answer as an ordered pair. 5x - 4y = -3 7y= 2x + 12
-
Kim recently bought an expensive new chandelier for her house. She is starting to regret it because of how expensive it was. Which purchasing decision is Kim facing?
-
Solve the equation of motion for a damped SHM in a mass-spring system and discuss the conditions for heavy damping, critical damping, and light damping.
-
How does health insurance risk differ from other types of insurance risk (e.g., automobile or homeowners insurance)? What is the difference between cost sharing and cost shifting? Is retiree health...
-
A cantilever beam is supported by a tie rod at B as shown. Both the tie rod and the beam are steel E = 30 x 106 with psi. The tie rod is just taut before the distributed load is applied. (a) Find the...
-
A circular tube of aluminum is subjected to torsion by torques T applied at the ends (see figure). The bar is 24 in. long, and the inside and outside diameters are 1.25 in. and 1.75 in.,...
-
The composite shaft shown in the figure is manufactured by shrink-fitting a steel sleeve over a brass core so that the two parts act as a single solid bar in torsion. The outer diameters of the two...
-
Discuss the importance of validity and research design. Next, choose one type of validity (internal, external, construct, or statistical conclusion) and discuss its relevance to experimental, quasi...
-
Explain from a technical viewpoint why it is important to distinguish a method, research, approach, and design. Next, briefly discuss how understanding each term individually in addition to how these...
-
Define the two major types of sampling strategies .
Study smarter with the SolutionInn App