The Fatigue Behavior of Built-Up Welded Beams of Commercially Pure Titanium View Full Text


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Article Info

DATE

2010-11-02

AUTHORS

Anil Patnaik, Narendra Poondla, Udaykar Bathini, T. S. Srivatsan

ABSTRACT

In this article, the results of a recent study aimed at evaluating, understanding, and rationalizing the extrinsic influence of fatigue loading on the response characteristics of built-up welded beams made from commercially pure titanium (Grade 2) are presented and discussed. The beams were made from welding plates and sheets of titanium using the pulsed gas metal arc welding technique to form a structural beam having an I-shaped cross section. The welds made for the test beams of the chosen metal were fillet welds using a matching titanium filler metal wire. The maximum and minimum load values at which the built-up beams were cyclically deformed were chosen to be within the range of 22-45% of the maximum predicted flexural static load. The beams were deformed in fatigue at a stress ratio of 0.1 and constant frequency of 5 Hz. The influence of the ratio of maximum load with respect to the ultimate failure load on fatigue performance, quantified in terms of fatigue life, was examined. The percentage of maximum load to ultimate load that resulted in run-out of one million cycles was established. The overall fracture behavior of the failed beam sample was characterized by scanning electron microscopy observations to establish the conjoint influence of load severity, intrinsic microstructural effects, and intrinsic fracture surface features in governing failure by fracture. More... »

PAGES

1247-1255

References to SciGraph publications

  • 2004-03. Structural Titanium Alloys in Modern Mechanical Engineering in METAL SCIENCE AND HEAT TREATMENT
  • Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1007/s11665-010-9773-3

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    http://dx.doi.org/10.1007/s11665-010-9773-3

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