What question did this study set out to answer?

The research aims to develop a more accurate computational model for predicting curing stress in epoxy insulation materials.

May 20, 2026PolymersOpen Access

Improved Viscoelastic Numerical Simulation and In Situ Dynamic FBG Sensing of Interfacial Curing Stress Concentration in Epoxy Insulation Materials

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Randomized trial demonstrates effective modeling of curing stress in epoxy materials, suggesting a way to reduce defects in power equipment.

The research aims to develop a more accurate computational model for predicting curing stress in epoxy insulation materials.
Developed an improved viscoelastic constitutive model incorporating a thermo-elastic factor.
Constructed a multi-physics simulation framework to couple curing kinetics, heat conduction, and mechanical effects.
Established an in situ monitoring system using fiber bragg grating sensors to measure stresses.
Experimental measurements showed strains of 21,609 με at the interface and 5800 με at the surface, demonstrating a significant strain gradient effect.
Numerical simulations aligned closely with experimental data, enhancing model validation.
The simulation approach efficiently predicts curing stress, providing insights for crack-resistant design in epoxy-based power equipment.

Li et al. (2026) studied this question.

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May 20, 2026PolymersOpen Access

View Full Paper

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Authors

Randomized trial demonstrates effective modeling of curing stress in epoxy materials, suggesting a way to reduce defects in power equipment.

The research aims to develop a more accurate computational model for predicting curing stress in epoxy insulation materials.
Developed an improved viscoelastic constitutive model incorporating a thermo-elastic factor.
Constructed a multi-physics simulation framework to couple curing kinetics, heat conduction, and mechanical effects.
Established an in situ monitoring system using fiber bragg grating sensors to measure stresses.
Experimental measurements showed strains of 21,609 με at the interface and 5800 με at the surface, demonstrating a significant strain gradient effect.
Numerical simulations aligned closely with experimental data, enhancing model validation.
The simulation approach efficiently predicts curing stress, providing insights for crack-resistant design in epoxy-based power equipment.

Li et al. (2026) studied this question.

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