Potentialities of the IET technique for measuring the elastic modulus

S. TOGNANA; W. SALGUEIRO; S. MONTECINOS

Revista IngloMayor

Universidad Mayor

Lugar: Santiago; Año: 2018 vol. 14

0719-7578

It has been found that the IET technique is a very auseful tool to obtain reliable results in mechanical properties of polymericand metallic materials. Information of several polymers with different internalstructure has been obtained, observing the response that this device presentswhen some external parameter is changed, as is the temperature,specifically in the signal/noise ratio of the spectra obtained. Itis concluded that a lower signal/noise ratio implies a sample with higherenergy dissipation, which depends exclusively on the internal arrangementpresented by the material under study. The values obtained of the modulus E are close to those reported in the literature, soit is concluded that the measurement system exhibits a satisfactory response.The behavior of epoxy and an epoxy matrix filled withaluminum particles with the temperature was studied. Thedetermination of Tg withthis technique presents a good agreement with results reported in theliterature using specific experimental technique as differential scanningcalorimetry.A particular study for theGrilon polymer was presented, where the sensitivity of the technique to E variations due to frequency wasevidenced.