The 13th World Conference on Titanium 2015: Stability of Residual Stresses in Ti-6Al-4V Components due to Mechanical Loads
Research output: Contribution to conference › Abstract › peer-review
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2015. Abstract from Ti-2015, San Diego, United States.
Research output: Contribution to conference › Abstract › peer-review
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TY - CONF
T1 - The 13th World Conference on Titanium 2015
T2 - Ti-2015
AU - Stanojevic, Aleksandar
AU - Maderbacher, Hermann
AU - Oberwinkler, Bernd
AU - Angerer, Paul
PY - 2015/8/16
Y1 - 2015/8/16
N2 - Residual stresses are an important factor for the design of components that require high fatigue life and low weight while keeping demanding safety requirements.This work describes the stability of residual stresses due to cyclic mechanical loads. The residual stress relaxation can be described by local plastic deformation. In order to determine the plastification behaviour of Ti-6Al-4V, Low-Cycle-Fatigue (LCF) tests were performed on specimens.The yield stress defines the beginning of the plastification and can vary due to cyclic hardening and softening effects. To describe these effects, a material model was applied and parameterized using the LCF data. With this material model, a simulation model was developed to calculate the residual stress relaxation.Additionally, cyclic tests were performed on machined specimens. The residual stresses of the specimens were measured by x-ray diffraction before and after testing. The measured residual stress relaxation was matched by the simulation.
AB - Residual stresses are an important factor for the design of components that require high fatigue life and low weight while keeping demanding safety requirements.This work describes the stability of residual stresses due to cyclic mechanical loads. The residual stress relaxation can be described by local plastic deformation. In order to determine the plastification behaviour of Ti-6Al-4V, Low-Cycle-Fatigue (LCF) tests were performed on specimens.The yield stress defines the beginning of the plastification and can vary due to cyclic hardening and softening effects. To describe these effects, a material model was applied and parameterized using the LCF data. With this material model, a simulation model was developed to calculate the residual stress relaxation.Additionally, cyclic tests were performed on machined specimens. The residual stresses of the specimens were measured by x-ray diffraction before and after testing. The measured residual stress relaxation was matched by the simulation.
KW - Residual stresses
KW - Cyclic load
KW - Constitutive Modelling
M3 - Abstract
Y2 - 16 August 2015 through 20 August 2015
ER -
