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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/11489
Title: Experimental and numerical studies to estimate fatigue crack growth behavior of Ni-based super alloy
Authors: Kumar M.
Ahmad S.
Singh, Indra Vir
Rao A.V.
Kumar J.
Kumar V.
Published in: Theoretical and Applied Fracture Mechanics
Abstract: In this work, the fatigue crack growth behavior of the Nickel based super alloy is investigated at room (26 °C) and elevated temperature (650 °C). The fatigue crack growth experiments are performed to understand the effect of temperature and loading rate. The elasto plastic fracture toughness tests are performed to evaluate JIC. Paris law is used in conjunction with extended finite element method (XFEM) to numerically predict the fatigue life. The stress intensity factors of individual mode (KI and KII) are computed from J-integral by decomposing the stress, strain and strain derivatives into symmetric and antisymmetric parts. Few parametric studies are performed to show the mesh convergence and path independency of J-integral. Fatigue crack growth in an aero-engine turbine disc is predicted. The numerically predicted fatigue life is found in good match with the experimental results. © 2018 Elsevier Ltd
Citation: Theoretical and Applied Fracture Mechanics (2018), 96(): 604-616
URI: https://doi.org/10.1016/j.tafmec.2018.07.002
http://repository.iitr.ac.in/handle/123456789/11489
Issue Date: 2018
Publisher: Elsevier B.V.
Keywords: Fatigue crack growth
Fracture toughness
J-decomposition
XFEM
ISSN: 1678442
Author Scopus IDs: 57199856545
56640431400
57204061377
57198920326
24461703400
57200714018
Author Affiliations: Kumar, M., Department of Mechanical and Industrial Engineering, Indian Institute of Technology, Roorkee, Uttarakhand 247667, India
Ahmad, S., Defence Metallurgical Research Laboratory, DRDO, Hyderabad, India
Singh, I.V., Department of Mechanical and Industrial Engineering, Indian Institute of Technology, Roorkee, Uttarakhand 247667, India
Rao, A.V., Defence Metallurgical Research Laboratory, DRDO, Hyderabad, India
Kumar, J., Defence Metallurgical Research Laboratory, DRDO, Hyderabad, India
Kumar, V., Defence Metallurgical Research Laboratory, DRDO, Hyderabad, India
Funding Details: This work is done as part of doctoral thesis work of Mr. Manish Kumar under the scheme of Ministry of Human Resource Development, Government of India, and is partially supported by Defence Metallurgical Research Laboratory , Hyderabad, India.
Corresponding Author: Singh, I.V.; Department of Mechanical and Industrial Engineering, Indian Institute of TechnologyIndia; email: indrafme@iitr.ac.in
Appears in Collections:Journal Publications [ME]

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