By ASM (American Society for Metals)
Offering a operating wisdom of fatigue and fracture homes in genuine engineering perform, this guide is principally helpful in comparing attempt information and understanding the foremost variables that impact effects. it's going to additionally offer you a greater figuring out of fracture mechanics to help you in existence review and lifestyles extension of elements. Sections contain: Fatigue Mechanisms, Crack progress, trying out, Engineering features of Fatigue existence, Fracture Mechanics of Engineering fabrics, Fatigue and Fracture keep watch over, Castings, Weldments, Wrought Steels, Aluminum Alloys, Titanium Alloys and Superalloys. Appendices comprise accomplished assurance of fatigue energy parameters and stress-intensity elements.
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Additional info for ASM Handbook, Volume 19: Fatigue and Fracture
Fig. 1 Schematic S-N representation of materials having fatigue limit behavior (asymptotically leveling off) and those displaying a fatigue strength response (continuously decreasing characteristics) What about the S-N data presentation? Stress is the controlling quantity in this method. The most typical formats for the data are to plot the log number of cycles to failure (sample separation) versus either stress amplitude (Sa), maximum stress (Smax), or perhaps stress range (∆S) (Ref 15). Remember that one other dynamic variable needs to be specified for the data to make sense.
Finally, an experimental alpha + beta alloy was studied where the strength was held constant in both the equiaxed alpha and transformed microstructural conditions. For equiaxed alpha, toughness increased with beta grain boundary area per unit volume. In the transformed condition, toughness increased with an increase in the percentage of primary alpha. Table 2 gives the relationship between KIc and the fraction of transformed structure for Ti-6Al-4V. 5 63 56 42 36 Harrigan (Ref 41) has examined the effect of microstructures on the fracture properties of titanium alloys and concludes that variations in microstructures can result in large scatter of experimental results.
D. D. thesis, Delft University of Technology, Delft, The Netherlands, 1971 18. C. Grosskreutz and G. Shaw, Critical Mechanisms in the Development of Fatigue Cracks in 2024-T4 Aluminum, Fracture, Chapman and Hall, 1969, p 620-629 19. Q. Bowles and J. Schijve, The Roll of Inclusions in Fatigue Crack Initiation in an Aluminum Alloy, Int. J. , Vol 9, 1973, p 171-179 20. J. C. Boettner, A Note on Fatigue and Microstructure, Fracture of Solids, Interscience Publishers, 1963, p 383-389 21. D. , Martinus Nijhoff Publishers, 1986, p 51-55 22.
ASM Handbook, Volume 19: Fatigue and Fracture by ASM (American Society for Metals)