Notch strengthening in titanium aluminides under monotonic loading Author MILKE, J. G 1; BEUTH, J. L 1; BIERY, N. E 2 [1] Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213-3890, United States

The Charpy V-notch test is used worldwide to indicate the ductile-to-brittle transition of a steel. While Charpy results cannot be directly applied to structural design

AU - Stubbins, James F. PY - 2008. Y1 - 2008. N2 - 316L stainless steel has been widely used for structural component applications in irradiation environments. 2005-06-01 · For each of the specimens, a notch strengthening ratio with respect to stress and a notch strengthening ratio with respect to strain were calculated: (1) ϕ σ or ε = X y X ¯ y, smooth, where ϕ is the notch strengthening ratio, and X y is the true yield stress or strain of an individual specimen and X ¯ y, smooth is the mean true yield stress or strain of the smooth specimens.

(d) / =a 14. (e) / =a 25. (f) The angle between the loading direction and the shearing - "Notch strengthening or weakening governed by transition of shear failure to normal mode Notch-Strengthening Phenomenon Under Creep-Fatigue Loading Conditions N. Merah, Assistant Professor, Department of Mechanical Engineering, King Fahd University of Petroleum and Minerals, P.O. Box 1758, Dhahran 31261, Saudi Arabia Notch is a very important geometry with widespread applications in engineering structural components. Finding a universal equation to predict the effect of notch on strength of materials is of much significance for structural design and materials selection. In the present work, we tried to find this universal equation from experimental results of metallic glasses (MGs) and other materials as In this study, the notch effect of different types of 304 stainless steel rod notch is studied because of the problem of difficulty in measuring the notch root strain of 304 rod stainless steel, and the parameters of the annular notch root are analyzed. The notch angle, notch depth, and notch root radius are the main parameters of the stress field affecting the annular notch, and the Notch-related weakening and strengthening behavior under creep–fatigue conditions was studied in terms of the elastic–viscoplasticity finite-element method (FEM). A coupled damage analysis, i.e., the skeletal point method for creep damage evaluation coupled with the equivalent strain range method for fatigue damage, was employed in the notch effect evaluation.

Metallic foams show notch-strengthening behavior when analyzing double-edge notched specimen in compression and tension. A discrete microstructural model has been used to simulate the effect of notch depth and specimen size on the net-section-strength.

Typical notch is 40mm x 90mm (HxW), mostly within 600mm of the ends. One run in of the notches is 300mm from a thermalite wall which I estimate to weigh about 550kg and is therefore providing a load of about 70kg per joist. One other thing, there is an old concrete fireplace hearth in the middle of the affected run too.

2021-02-19 · By increasing the notch depth and the notch sharpness, we observe a failure mode transition from shear banding to necking, and also a large notch strengthening. This necking is found to be caused by the combined effects of large stress gradient at the notch roots and the impingement and subsequent arrest of shear bands emanating from the notch roots.

A discrete microstructural model has been used to simulate the effect of notch depth and specimen size on the net-section-strength. The sharp notch with a large K t may result in a lower NSR and notch weakening even in some ductile materials, while an MG notched sample with a small K t can also show some notch strengthening effect. For a similar K t, a brittle material often has a lower NSR than the ductile one, and vise versa.

A discrete microstructural model has been used to simulate the effect of notch depth and specimen size on the net-section-strength.
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Read Ancient Strengthening Technique Chapter 360 - Top Notch Women Relies On Wisdom And Disposition english translated light novel update daily Notch strengthening is well documented for metals and normally arises because the triaxial stress at the notch tip suppresses yield until the axial stress across the notch is considerably greater than the yield stress, G. y .
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Macroscopic fractography of notched samples after tensile failure. (a) to (e) SEM images to show final fractured samples with different /a and their shear angles. (a) / = .a 1 7. (b) / = .a 6 4. (c) / =a 10. (d) / =a 14. (e) / =a 25.