1. Using a single edge notched bend specimen of nodular cast iron, a Jic test is...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
1. Using a single edge notched bend specimen of nodular cast iron, a Jic test is performed based on the unloading compliance technique. In figure la the measured load P is plotted as a function of the load displacement v. From these data the slope of the P-v curve during the different unloading-loading cycles are found as follows: no. slope [N/mm] 123 45 19200 18800 17600 15800 13300 (no crack growth yet) 6 11000 For specimens with this geometry and made of this material the relative crack length a/W is plotted in figure 1b as a function of the compliance C. Other data are: Material: Young's modulus E = 200 000 MPa yield strength Sys = 350 MPa ultimate tensile strength Suts - 450 MPa Specimen: thickness B = 7 mm height W=4B a) Roughly indicate the positions of the J-Aa points in figure 1c, as they follow from the experimental results. Be sure to add numerical values to the vertical axis. J may be calculated without making a distinction between elastic and plastic displacements. b) Explain how crack tip blunting is quantified for a Jic test. Indicate this in figure 1c. The critical J value according to ASTM E 813 is defined as the value after 0.2 mm of stable crack growth. c). d) In figure 1c, draw the line that represents this stable crack growth. Roughly show in figure 1c how the critical J-value, Jie, is obtained. 3000 2500 2000 1500 1000 500 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 Figure la v [mm] 14 1.1 1.2 1.3 J [N/mm] a/W[-] 0.80 0.75 0.70 0.65 0.60 0.55 0.50 30 30 Figure 1b 40 40 50 60 70 80 90 100 110 120 130 140 C 1E6 [mm/N] 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.6 Aa [mm] Figure 1c 1. Using a single edge notched bend specimen of nodular cast iron, a Jic test is performed based on the unloading compliance technique. In figure la the measured load P is plotted as a function of the load displacement v. From these data the slope of the P-v curve during the different unloading-loading cycles are found as follows: no. slope [N/mm] 123 45 19200 18800 17600 15800 13300 (no crack growth yet) 6 11000 For specimens with this geometry and made of this material the relative crack length a/W is plotted in figure 1b as a function of the compliance C. Other data are: Material: Young's modulus E = 200 000 MPa yield strength Sys = 350 MPa ultimate tensile strength Suts - 450 MPa Specimen: thickness B = 7 mm height W=4B a) Roughly indicate the positions of the J-Aa points in figure 1c, as they follow from the experimental results. Be sure to add numerical values to the vertical axis. J may be calculated without making a distinction between elastic and plastic displacements. b) Explain how crack tip blunting is quantified for a Jic test. Indicate this in figure 1c. The critical J value according to ASTM E 813 is defined as the value after 0.2 mm of stable crack growth. c). d) In figure 1c, draw the line that represents this stable crack growth. Roughly show in figure 1c how the critical J-value, Jie, is obtained. 3000 2500 2000 1500 1000 500 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 Figure la v [mm] 14 1.1 1.2 1.3 J [N/mm] a/W[-] 0.80 0.75 0.70 0.65 0.60 0.55 0.50 30 30 Figure 1b 40 40 50 60 70 80 90 100 110 120 130 140 C 1E6 [mm/N] 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.6 Aa [mm] Figure 1c
Expert Answer:
Related Book For
Posted Date:
Students also viewed these mechanical engineering questions
-
With reference to the case study, discuss how technology has improved efficiency and decision making for governments. Refer to the changes technology has had on Police and Fire Services.
-
Defensiveness can be defined as "...a protective reaction resulting from fear or a threat to one's face or ego" (Andersen & Guerrero, 1989). Defensiveness is a behavior that obstructs effective...
-
The Taos Museum of Southwestern Arts and Crafts (TMSAC) presents rotating exhibits of the works of artists and artisans from the Southwestern United States. Historically, the museum has derived its...
-
Five Smithtown High School students are saving up to buy their first cars. They all have after-school jobs, and their weekly salaries are listed in the table. Emily ..........................$110 Sam...
-
Freshly prepared mitochondria were incubated with b -hyroxybutyrate, oxidized cytochrome c, ADP, Pi, and cyanide. b -Hyroxybutyrate is oxidized by an NAD+ -dependent dehydrogenase. The experimenter...
-
He Given a purchase probability of 0.04 and an awareness probability of 0.1, what is the sales forecast if there are 20,000 customers in the target market?
-
On September 1, Cambridge Company has 500,000 shares of \(\$ 15\) par value common stock that are issued and outstanding. The general ledger shows the following account balances relating to the...
-
Suppose you are a systems analyst developing a detailed test plan. Explain the testing strategies you will use in your plan. Will you use live or simulated data?
-
Select a situation in your life, use whatever "market research" techniques are appropriate, and define a set of customer attributes for the situation. Examples to get you started are as follows:...
-
Finney Company's condensed income statement is presented below: The following data is compiled relative to Finney's operating segments: Included in the amounts allocated to each segment on the above...
-
Two word-wide unsigned integers are stored at the physical memory address 00A0016 and 00A0216, respectively. Write an instruction sequence that computes and stores their sum, difference, product and...
-
During 2005 , Liberty's days' sales in receivables ratio was a. 39 day's b. 37 day's c. 35 day's d. 30 days
-
Liberty's inventory turnover during 2007 was a. 6 times b. 7 times c. 8 times d. Not determinable from the data given
-
Liberty's stock has traded recently around \(\$ 44\) per share. Use your answer to question 9 to measure the company's price/earnings ratio. a. 36 b. 44 c. 1.00 d. 69
-
Triumph Corporation is preparing its statement of cash flows by the indirect method. Triumph has the following items for you to consider in preparing the statement. Identify each item as an -...
-
Anita Maxwell Company expects the following for 2007: Net cash provided by operating activities of $150,000 Net cash provided by financing activities of $60,000 Net cash used for investing...
-
You were offered either a simple interest note or a simple discount note with the following terms: $21,824 at 5% for 24 months. a. Calculate the effective interest rate. Note: Do not round...
-
Nate prepares slides for his microscope. In 1 day he prepared 12 different slides. Which equation best represents y, the total number of slides Nate prepares in x days if he continues at this rate? A...
-
Install and run the Microsoft Security Baseline Analyzer on your home computer or laptop. Write a report explaining any weaknesses identified and how to best correct them. Attach a copy of the tools...
-
Visit the Center for Internet Security Web site (www.cisecurity.org) and down load the appropriate scoring tool for your computer. Run the tool to assess how well your computer conforms to the...
-
a. Apply the following data to evaluate the time-based model of security for the XYZ Company. Does the XYZ Company satisfy the requirements of the time-based model of security? Why? Estimated time...
Study smarter with the SolutionInn App