📢Spreading the Word!📢 Numerical tool with mean stress correction demonstrated for fatigue life estimation of thermoplastic composites!
"The replacement of well-characterized thermoset matrix composites with thermoplastic composites is being driven by the increasing need for recyclability, as well as the potential for much faster cycle times and fastener-less assemblies via welding. Although there are indeed companies producing thermoplastic composite structures that have demonstrated years of successful use, these designs have been developed using internal methods and design rules. Currently, there are no standard methodologies or commercial calculation tools to design such materials to avoid fatigue failure." 👀
"In general, thermoplastic matrix materials exhibit more susceptibility to cyclic loading failure, manifested by phenomena including steeper SN curves (plots of cycles (N) vs. stress (S) to failure), time-dependent deformation and failure behavior due to viscoelastic mechanisms (creep and/or relaxation)), as well as lower endurance limits and higher levels of ductility in matrix behavior that can lead to plasticity-driven failure modes." 🕵🏻♀️
"Thus, the need for high-fidelity methods of predicting fatigue life for these materials is increasingly important as they are adopted for applications such as large aerospace and automotive structures and pressure vessels storing fuels such as hydrogen — structures that operate for long periods of time and require durability under cyclic loads. As a result, there is strong interest in a technique and an associated automated simulation tool to support designing fatigue-tolerant thermoplastic composite structures." 😀
#managingcomposites
#thenativelab
#thermoplastics
Scientific Researcher III at COMOTI - Romanian Research & Development Institute for Gas Turbines
1moComsol Multiphysics can do this much better though...