Molecular formula :
nature : the sample at a fixed frequency of mechanical vibration to testify when measuring the dynamic mechanical technology. Can strain, or their stress and phase angle change its calculation of storage modulus and damping. This method is different from the free vibration of speaking. Plus the mechanical oscillation frequency can be in a certain range transform, which completed a series of measurements, in order to make the sample frequency spectrum. The procedure can also warming environment for the conduct of a series of measurements, in order to make the sample temperature spectrum. Viscoelastic spectrometer is to use such a mature technology equipment.
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