Energy Accumulation in Steel, in the Conditions of Constant-Amplitude-Reference-Cited by-同舟云学术

Energy Accumulation in Steel, in the Conditions of Constant-Amplitude

Published:2015-08 Issue: Volume:240 Page:114-121
ISSN:1662-9779
Container-title:Solid State Phenomena
language:
Short-container-title:SSP

Author:

Mroziński Stanisław¹,Piotrowski Michał¹

Affiliation:

1. University of Technology and Live Sciences in Bydgoszcz

Abstract

This work presents results of fatigue tests of P91 steel specimens under constant-amplitude and programmed loading in temperature T=600°C. Two strain levels, applied in different order, were used for programmed loading. The loading program level changes were introduced for different levels of damage. The tests provided the basis for analysis of strain energy ΔWpl in the function of the number of load cycles under constant-amplitude and programmed loading. It has been found that that the form of a loading program has an influence on the life and value of energy cumulated in the specimen until crack initiation. Verification of Palmgren Miner hypothesis revealed that its effectiveness depends on the loading program and temperature.

Publisher

Trans Tech Publications, Ltd.

Subject

Condensed Matter Physics,General Materials Science,Atomic and Molecular Physics, and Optics

Link

https://www.scientific.net/SSP.240.114.pdf

Reference13 articles.

1. Kocańda S., Kocańda A., Low cycle fatigue strength of metals, PWN, Warsaw, 1989. (Niskocyklowa wytrzymałość zmęczeniowa metali, PWN, Warszawa, 1989).

2. Feltner C.E., Morrow J.D., Microplastic strain hysteresis energy as a criterion for fatigue fracture, Journal Basic Engineering ASME, March, 1961, pp.15-22.

3. Ellyin F., Kujawski D., Plastic strain energy in fatigue failure. Journal Pressure Vessel Technology, Trans. ASME 106, 1984, pp.342-347.

4. Gołoś K.,. Plastic strain energy under cyclic multiaxial states of stress. Mechanika Teoretyczna i Stosowana 1(26), (1988), pp.171-177.

5. Mroziński S., Topoliński T., New energy model of fatigue damage acaccumulation and its verification for 45-steel. Journal of Theoretical and Applied Mechanics 2(37), 1999, pp.223-239.