Method and apparatus for measuring the loss modulus of materials

摘要: The loss modulus of a material is ascertained by subjecting sample the to mechanical vibration at resonant frequency material. dynamic driving force required maintain in its measured. Next, static displace same distance as when vibrating quotient divided proportional tangent angle between elastic and material, or tan δ. Since vibration, related may be readily computed multiplying An apparatus capable performing this method includes system that vibrates using sinusoidal which 90° out phase with displacement hence sample's function.