Fatigue Behavior Of Continuous Fiber-Reinforced Composite Beams

<p>A study has been taken to evaluate the fatigue behavior of glass fiber-reinforced composite beams. Due to their highly anisotropic properties, composite beams have different failure modes at different stages of fatigue life. The results of the four-point bending fatigue tests show that the material follows different failure mechanisms depending on the stress level applied to the beam and failure mode changes from compressive failure at high stresses to tensile failure at low stresses. Accordingly, the "stress vs. number of cycles" curve has different slopes at high and low cycle fatigue regions. Two different fatigue damage models, which are used with similar damage mechanisms, were selected. The combination of these two models was applied to composite beam. The methodology of life prediction and calculations are presented. The numerical results are compared to experimental data. The predicted fatigue lives agree with experimental observations very well.</p>

Name thesis:degree_name

Master of Science (MS)

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Mechanical Engineering

Year

2012

Author dc:creator

• Reimbayev, Mahsud

Contributors dc:contributor

• Matthew Cavalli

Repository record dc:identifier

https://commons.und.edu/theses/1373

OAI identifier oai:identifier

oai:commons.und.edu:theses-2374