Notch effect on constant amplitude and/or variable amplitude high cycle fatigue life

Notch effect on constant amplitude and/or variable amplitude high cycle fatigue life

Advisor/s

Dr Greg Wheatley, Dr Ricardo Branco University of Coimbra

College or Research Centre

College of Science & Engineering

Summary of Project

Compare the S-N curves under stress-controlled conditions for the different notched (and unnotched) geometries. Study the notch effect for different geometric discontinuities and loading histories (CA and/or VA). Develop a numerical elastic-plastic model to estimate the stress and strain fields at the notch region. Predict the fatigue life using fatigue parameters determined at CA from LCF strain-controlled tests. Develop a mixed numerical-experimental model to predict the fatigue life. Analysis of failure mechanisms from fracture surfaces.

Key Words

Notch effect, ; constant amplitude; variable amplitude; high cycle fatigue

Would suit an applicant who

has a sound academic background, research experience, an interest in mechanical engineering and strong experimental and computational skills.

Updated: 15 Aug 2022