Case Study: Tokyo University of Science evaluates carbon fiber interface strength with Mat3ra

Tokyo University of Science - Customer Case Study

Tokyo University of Science needed a way to better understand and optimize the mechanical properties of carbon fiber/polymer resin interfaces, a key challenge for improving composite performance. They worked with Mat3ra, using molecular simulation tools to compare carbon fiber interfaces with epoxy, vinyl ester, and polyimide resins against experimental microbond testing.

Mat3ra supported molecular dynamics and interface energy modeling of graphene/resin systems, alongside finite element analysis of debonding behavior. The study found strong agreement in the ranking of interfacial performance: polyimide > epoxy > vinyl ester, with measured interfacial strengths of 130 MPa, 74 MPa, and 43 MPa, respectively. Mat3ra’s simulations also helped explain these trends through density distributions and π-π interactions, though the tensile debonding model overestimated absolute strength and was not yet quantitatively predictive.

Tokyo University of Science

Jun Koyanagi

Department of Materials Science and Technology