Fatigue studies on Carbon-steel tubes under multiaxial loading

Arora, Punit and Gupta, Suneel K and Bhasin, V and Singh, R K and Sivaprasad, S and Tarafder, S (2015) Fatigue studies on Carbon-steel tubes under multiaxial loading. Transactions, SMiRT-23, Manchester, United Kingdom, August 10-14, 2015, Division III (Applied Computation Simulation and Animation). pp. 1-13.

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Abstract

The tests and investigations have been carried out in the area of “Multiaxial Fatigue” with an objective to
improve the fatigue damage assessment procedure and design rules. Fatigue tests were conducted on
tubular specimens of SA333Gr.6 material under combined axial-torsion in-phase/ out-of-phase load
combinations with triangular, sine and trapezoidal load waveforms. A software tool has been developed
for the evaluation of multiaxial fatigue damage parameter for analyzing the tests data using invariant
based fatigue model of ASME Sec.III code. The fatigue crack initiation life was predicted using the best
fit axial fatigue life curve (without use of safety factors). The analyses for fatigue crack initiation life
assessment have also been carried out using critical plane based models. A critical plane based model has
been proposed for the prediction of fatigue life for tests carried out on tube specimens.

Item Type: Article
Uncontrolled Keywords: SA 333 steel, Multiaxial fatigue, Critical plane theory, In-phase, Out-of-phase
Subjects: Metallurgy > Metallurgical Techniques > Mechanical Testing
Mechanical Engineering
Divisions: Material Science and Technology
Depositing User: Users 38 not found.
Date Deposited: 24 Aug 2015 12:18
Last Modified: 24 Aug 2015 12:18
URI: http://eprints.nmlindia.org/id/eprint/7300

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