Abstract
Aluminum materials of various grades are utilized across many industries, spanning from the cycling, automotive, aerospace, and the marine industry. In the marine grade, aluminum materials are utilized to construct entire vessels of various lengths or portions of them by taking advantage of the lower weight characteristics of the materials and impact on stability of the structures. In particular, 5xxx series aluminum materials are relied on by the marine industry for these purposes, taking advantage of the ability of these series to resist marine corrosive environments. However, during its lifetime, a marine vessel will experience a multitude of variable amplitude loading conditions, with occasional overloads and underloads depending on the operation and environmental conditions. In some cases, these overloads/underloads can result in the failure of the structures by reaching its ultimate capacity, but in other instances, they can systematically affect the growth rate of localized cracks. Existing models, like the Wheeler, Willenborg, plus variations of these, have been utilized to predict the crack growth behavior with varying degrees of success. We created an experimental matrix to explore the effects of overload/underload combinations on fatigue crack growth in 5xxx aluminum. Both visual inspection of crack tip location and digital image correlation (DIC) characterization of the crack tip deformation fields were used to characterize the crack growth in center crack tension (CCT) panel specimens. DIC also enabled additional analysis of strain fields to elucidate on the conditions responsible for change in the crack growth behavior. This chapter outlines some of the ongoing results of this work, which built on past experimental work conducted. Future phases of this work will utilize this data to develop new models for fatigue crack growth, and application of multiple pulses sequences.
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References
Murthy, R., Palani, G., Iyer, N.: State-of-the-art review on fatigue crack growth analysis under variable amplitude loading. IE(I) J., 12 (2004)
Sumi, Y.: Fatigue crack propagation in marine structures under seaway loading. Int. J. Fatigue, 7 (2014)
Fricke, W., Paetzold, H.: Experimental Investigations on Fatigue Damage of Ship Structures Caused by Whipping Stresses. In: PRADS, Changwon City, Korea (2013)
Wheeler, O.: Spectrum loading and crack growth. J. Basic Eng. Transport. ASME, 5 (1972)
Willenborg, J., Engle, R., Wood, H.: A crack growth retardation model using an effective stress concept. AFFDL TM-71-1-FBR, Jan 1971 (1971)
Mehrzadi, M., Taheri, F.: A material sensitive modified wheeler model for predicting the retardation in fatigue response of AM60B due to an overload. Int. J. Fatigue, 10 (2013)
Laseure, N.S.I.M.N.D.W.W.: Effects of Variable Amplitude Loading on Fatigue Life. Ghent University, Labo Soete, Ghent (2016)
Hart, D., Bruck, H.: Characterization and modeling of low Modulus composite patched center crack tension specimen using DIC surface. In: Society of Experimental Mechanics (2018)
ASTM-E8: ASTM E8M-08: Standard Test Methods for Tension Testing of Metallic Materials. ASTM International, Conshohocken (2008)
ASTM-E466: ASTM E466–07: Standard Practice for Conducting Force Controlled Constant Amplitude Axial Fatigue Tests of Metallic Materials. ASTM International, Conshohocken (2007)
ASTM-E647: Standard Test Method for Measuring Fatigue Crack Growth Rates. ASTM International, Conshohocken (2015)
ASTM-E338: Standard Test Method of Sharp-Notch Tension Testing of High-Strength Sheet Materials. ASTM International, Conshohocken (2003)
Sutton, M., Orteu, J.-J., Schreier, H.: Image Correlation for Shape, Motion, and Deformation Measurements. Springer LLC, Boston (2009)
Jones, E.: Good practices guide for digital image Correllation. Int. Digital Image Correl. Soc. (2018)
Bannantine, J., Comer, J., Handrock, J.: Fundamentals of Metal Fatigue Analysis. Prentice Hall Inc, Upper Saddle River (1990)
Bruck, H.: Analysis of 3-D Effects near the Crack Tip on Rice’s 2-D J-Integral Using Digital Image Correllation and Smoothing Techniques, M.S. Thesis, Univeristy of South Carolina (1989)
Yates, J., Zanganeh, Y.: Quantifying crack tip displacement fields with DIC. Eng. Fracture Mech., 14 (2010)
Gdoutos, E.: Fracture Mechanics, An Introduction, 2nd edn. Springer, Minneapolis (2005)
Chen, F., Wang, F., Cui, W.: Fatigue life prediction of engineering structures subjected to variable amplitude loading using the improved crack growth rate model. Fatigue Fracture Eng. Mater. Struct., 13 (2011)
Anderson, T.: Fracture Mechanics Fundamental and Applications, 3rd edn. Taylor and Francis Group LLC, Boca Raton (2005)
Cerri, E., Evangelista, E.: Metallography of Aluminum Alloys. Mechanical Engineering Department, European Aluminum Association, Ancona (1999)
Ritchie, R.: Mechanisms of fatigue crack propagation in metals, ceramics and composites: role of crack tip shielding. Mater. Sci. Eng. A103, 14 (1988)
Magoga, T., Aksus, S., Cannon, S., Ojeda, R., Thomas, G.: Identification of slam events experienced by a high-speed craft. Ocean Eng. 13 (2017)
Acknowledgments
Work described was performed by the Naval Surface Warfare Center Carderock Division’s Platform Integrity Department and the University of Maryland College Park’s Department of Mechanical Engineering. Financial and technical support was provided by an NSWCCD In-house Laboratory Independent Research (ILIR) program under Dr. Jack Price and a grant provided to UMD by Program Officer Dr. Paul Hess of the Office of Naval Research Code 331 under grant number N000141812016.
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Lara, P.A., Bruck, H.A., Müller, E.C. (2021). Characterization of High Frequency Pulse Loading on Fatigue of Metals. In: Xia, S., Beese, A., Berke, R.B. (eds) Fracture, Fatigue, Failure and Damage Evolution , Volume 3. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-030-60959-7_2
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DOI: https://doi.org/10.1007/978-3-030-60959-7_2
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