please compare the plane strain fracture toughness and Charpy test

Expert Solution

Ally Wells answered 1 year ago

Suppose an experiment was conducted to compare the fracture toughness of high-purity steel of some type...

Suppose an experiment was conducted to compare the fracture toughness of high-purity steel of some type with commercial-purity steel of the same type. For 9 high-purity specimens, the sample mean toughness and sample standard deviation of toughness (in some scale) were 1.82 and 0.6, respectively, whereas for 9 commercial-purity specimens, the sample mean and sample standard deviations were 2.43 and 0.82, respectively. Assume the data for both the high- and commercial-purity steels are normally distributed. Does this data suggest that...

An experiment was performed to compare the fracture toughness of high-purity 18 Ni maraging steel with...

An experiment was performed to compare the fracture toughness of high-purity 18 Ni maraging steel with commercial-purity steel of the same type. For m = 34 specimens, the sample average toughness was x = 63.4 for the high-purity steel, whereas for n = 37 specimens of commercial steel y = 57.8. Because the high-purity steel is more expensive, its use for a certain application can be justified only if its fracture toughness exceeds that of commercial-purity steel by more than...

Experimentally it has been found that the toughness to fracture, varies with the thickness of the...

Experimentally it has been found that the toughness to fracture, varies with the thickness of the test specimen, under what conditions a minimum value (flat effort or flat deformation) is obtained and why ?.

To become familiar with the general equations of plane strain used for determining in-plane principal strain,...

To become familiar with the general equations of plane strain used for determining in-plane principal strain, maximum in-plane shear strain, and average normal strain. The state of strain at a point has components of ϵx=350.0×(10−6) , ϵy=−200.0×(10−6), and γxy=150.0×(10−6). Part A - Equivalent in-plane strains on the oriented element. Determine the equivalent in-plane strains on an element rotated counterclockwise at an angle of θ = 30.0 ∘ Part B - In-plane principal strains on the oriented element. Determine the in-plane...

Discuss the variation of tensile strength, elongation, Vickers hardness and fracture toughness with C (carbon) %...

Discuss the variation of tensile strength, elongation, Vickers hardness and fracture toughness with C (carbon) % for normalised carbon steels. Write 500 words

A metal has a toughness of 748 MPa. Elastic deformation terminates at a strain of 0.010,...

A metal has a toughness of 748 MPa. Elastic deformation terminates at a strain of 0.010, and the material fractures at a total strain of 0.55. The modulus of resilience is 2.50MPa. Plastic deformation can be described by the equation sigma = K(epsilon)^n, where n is 0.18, and assume for this metal the equation is validto the point of fracture. A stress-strain diagram is not required but may help you in determining the answer. The student is expected to know...

3. Describe step-by-step brittle fracture of some metals and ceramics with poor ductility and toughness. In...

3. Describe step-by-step brittle fracture of some metals and ceramics with poor ductility and toughness. In discussion highlight and use relevant terms such as transgranular, Chevron pattern and others. Text Book- The Science and Engineering of Materials, Askeland et al. (seven edition

Define toughness for the case of 1) elastic deformation 2) plastic deformation 3) fast fracture

The following observations were made on fracture toughness of base plate of 18% nickel maraging steel...

The following observations were made on fracture toughness of base plate of 18% nickel maraging steel in ksi √in. 69.5, 71.9, 72.6, 73.1, 73.3, 73.5, 75.5, 75.7, 75.8, 76.1, 76.2, 76.2, 77.0, 77.9, 78.1, 79.6, 79.7, 79.9, 80.1, 82.2, 83.7, 93.7, (a) Explain why the t-curve is more appropriate than the z-curve in this case. (b) Based upon this study, find the 99% lower confidence bound of the mean fracture toughness.(c) Find the 95% confidence interval.

Describe step-by-step brittle fracture of some metals and ceramics with poor ductility and toughness. In discussion...

Describe step-by-step brittle fracture of some metals and ceramics with poor ductility and toughness. In discussion highlight and use relevant terms such as transgranular, Chevron pattern and others. Answer should jot exceds more than half a page. Thank you

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