PmmaOpslagmodulus

What is the Young's modulus for PMMA?

Figure 16 provides data for the Young’s modulus for the PMMA, relative to the data illustrated in figure 17. The Young’s modulus appears to be fairly constant with increasing hold time when the maximum contact load is relatively high; that is, at the deeper penetrations.

What are the physical and mechanical properties of PMMA?

Physical and mechanical properties PMMA is a glassy polymer with an amorphous structure. It has a density of 1.19 g/cm3 and has a very low water absorption. The refractive index ranges from 1.49 to 1.51 depending on the type. Parts made of PMMA have high mechanical strength and good dimensional stability.

Does the model reflect the characteristics of PMMA under high strain rates?

It can be observed from Fig. 15 that the model can reflect the characteristics of PMMA under high strain rates at large deformations, including the yielding and large softening behaviour. The rate-dependent softening behaviour can be interpreted as following.

Does PMMA have uniaxial compression?

Garcia-Gonzalez et al. conducted uniaxial compression experiments on PMMA from quasi-static to dynamic loading at 193–413 K and proposed a new model to capture the uniaxial compression characteristics of PMMA at high temperatures and high strain rates.

What is the simulated temperature rise of PMMA?

They found that the simulated temperature rise was close to the actual measured temperature rise when β = 0.5. EI-Qoubaa et al. used β = 0.6 to depict the mechanical response of PMMA at high strain rates and 298 K.

Is PMMA a viscoelastic thermoplastic polymer?

PMMA, however, is a viscoelastic thermoplastic polymer and, therefore, the O&P method should not be the first choice to gain insight on its mechanical properties.