Low-Cycle Fatigue Crack Growth in Ti-6242 at Elevated Temperature
Paper in proceedings, 2014

During low-cycle fatigue test with smooth bars the number of cycles to initiation is commonly defined from a measured relative drop in aximum load. This criterion cannot be directly related to the actual measure of interest - the crack length. By relating data from controlled crack growth tests under low-cycle fatigue conditions of a high strength Titanium alloy at 350°C and numerical simulation of these tests, it is shown that it is possible to determine the relationship between load drop and crack length, provided that care is taken to consider all relevant aspects of the materials stress-strain response.

Finite Element (FE)

Constitutive Model

Low-Cycle Fatigue Crack Growth

Mean Stress Relaxation

Author

Rebecka Brommesson

Chalmers, Applied Mechanics, Material and Computational Mechanics

Magnus Hörnqvist

Chalmers, Applied Physics, Materials Microstructure

Magnus Ekh

Chalmers, Applied Mechanics, Material and Computational Mechanics

Advanced Materials Research

Vol. 891-892 422-427

Subject Categories

Mechanical Engineering

Materials Engineering

Other Materials Engineering

DOI

10.4028/www.scientific.net/AMR.891-892.422

More information

Latest update

10/15/2018