Journal of Theoretical
and Applied Mechanics

52, 4, pp. 883-894, Warsaw 2014
DOI: 10.15632/jtam-pl.52.4.883

Verification of selected models of the size effect based on high-cycle fatigue testing on mini specimens made of EN AW-6063 aluminum alloy

Tomasz Tomaszewski, Janusz Sempruch, Tomasz Piątkowski
The study presents several cases where use of specimens with reduced overall dimensions, i.e. mini specimens in the course of fatigue tests is advantageous. The high-cycle fatigue tests based on a developed method have been performed on mini specimens and normative specimens (comparative tests). The tests have been conducted on EN AW-6063 aluminum alloy specimens. A correction coefficient determined as a result of monotonic tests and selected models of the size effect have been critically assessed based on the test results. A statistical Weibull's weakest link model and a monofractal approach based on a fractal dimension have been verified.
Keywords: mini specimen; high-cycle fatigue; weakest link theory; fractal approach