INFLUENCE OF TEST FREQUENCY AND NACL CONCENTRATION ON THE FATIGUE LIFE OF STEELS UNDER A REALISTIC LOAD SEQUENCE

The size and service life of offshore structures is such that it is impossible to investigate their corrosion on full-scale specimens under real-life conditions. Laboratory tests are also often accelerated, by using a higher stress, a higher test frequency or a higher concentration of NaCl in the seawater than would obtain in real life. To investigate the effects of these changes the influences of test frequency and NaCl concentration on the fatigue life of fillet-welded V-shaped specimens made from Fe E 355 KT steel has been determined in artificial seawater using a realistic load sequence. Mean test frequencies of 0.2, 1.0, or 10 Hz did not affect the crack initiation phase of the fatigue tests, but the lower of these frequencies did accelerate the crack propagation phase. Increasing the NaCl concentration of the seawater seemed to have no significant effect.

• Supplemental Notes:
  • Werkst. u. Korrosion, 37 (1986), p. 391 (July) [7 pp., 26 ref., 10 fig., 2 tab.]
• Authors:
  • Oberparleiter, W
• Publication Date: 1986

Language

• English

Subject/Index Terms

• Subject Areas: Marine Transportation;

Filing Info

• Accession Number: 00690454
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM