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
-
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...
-
According to Figure 15.11(b), upon excitation the P700 reaction center is raised in potential from about + 0.4 to - 1.3 volts. To what value of ÎGo' does this correspond? How does it compare...
-
Sephora was founded in 1970 by Dominique Mandonnaud, with its headquarters in Paris, France. Its distinct and innovative style of applying the concept of self-service to the world of perfumery and...
-
Two horizontal parallel conducting rods are connected such that a conducting crossbar free to slide along them has a constant current \(I\) running through it (Figure P27.34). The rods are separated...
-
The Bowman Corporation has a $18 million bond obligation outstanding, which it is considering refunding. Though the bonds were initially issued at 10 percent, the interest rates on similar issues...
-
A student addresses a bully mocking another student, " what you're doing isn't even clever or funny, everyone has a right ti express who they are.. you know like we say every morning.. liberty and...
-
Following are separate financial statements of Michael Company and Aaron Company as of December 31, 2013 (credit balances indicated by parentheses). Michael acquired all of Aarons outstanding voting...
-
Jakobs, Penn, and Lundt are partners with beginning-of-year capital balances of $400,000, $320,000, and$160,000, respectively.The partners agreed to share income and loss as follows: Salary of...
-
Risk management can take on many aspects. Discuss risk analysis, risk strategies and controlling and monitoring risks as they influence risk management and the potential for project failure.
-
Andre was asked by his apartment complex manager not to listen to music on his headphones while walking around the apartment complex premises. The manager said that a number of residents in the...
-
A company is projected to generate free cash flows of $600 million per year for the next 3 years (FCFF1, FCFF2 and FCFF3). Thereafter, the cash flows are expected to grow at a 3.0% rate in...
-
Change management is an important part of business management. Using Change Management, organizations can respond to customer requirements while minimizing value and reducing incidents and...
-
(10 points) What is the time complexity of the following method in terms of big O? public static fun(int n) { if (n
-
Write a paper on Aquarius Advertising Agency Analysis?
-
You've been asked to take over leadership of a group of paralegals that once had a reputation for being a tight-knit, supportive team, but you quickly figure out that this team is in danger of...
-
A significance level of 0.05 indicates that the probability of making a type I error is 0.05.
-
A handy mnemonic for interpreting the P-value in a hypothesis test is this: If the P (value) is low, then the null must go.
-
In testing a claim about a population mean, a larger z test statistic always results in a larger P-value. Decide whether the statement makes sense (or is clearly true) or does not make sense (or is...
Study smarter with the SolutionInn App