Experimental investigation and numerical modeling of creep response of glass fiber reinforced polymer composites

Glass fiber reinforced polymer (GFRP) composites have gained significant attention in various engineering applications due to their superior mechanical properties, lightweight, and corrosion resistance. However, their long-term behavior under sustained loads, known as creep, is not well understood. Creep is a time-dependent deformation that occurs under constant stress and can lead to significant structural damage. Therefore, it is crucial to investigate the creep behavior of GFRP composites to ensure their safe and reliable use in various applications.

Experimental investigation of the creep behavior of GFRP composites involves subjecting the specimens to constant stress over an extended period and measuring the resulting strain. The tests are typically conducted at elevated temperatures and under different stress levels to evaluate the effect of these variables on the creep response. The data obtained from the tests can be used to determine the creep parameters of the material, such as the creep compliance and creep rate.

Numerical modeling of the creep behavior of GFRP composites involves developing mathematical models that simulate the material's response under sustained loads. The models are typically based on creep laws that describe the relationship between stress, strain, and time. The models can be used to predict the long-term behavior of GFRP composites under different loading conditions.

Several factors can affect the creep behavior of GFRP composites, including fiber orientation, matrix properties, fiber volume fraction, and temperature. Therefore, it is essential to consider these factors when conducting experimental tests and developing numerical models.

In conclusion, the creep behavior of GFRP composites is a complex phenomenon that requires experimental investigation and numerical modeling to understand fully. The data obtained from these studies can be used to design and optimize GFRP composite structures for safe and reliable use in various applications