Viscoelasticity links
Viscoelasticity
* Think logarithmic
* Think logarithmic, big
* Phase delta. Stress vs. strain in sinusoidal loading. Meaning of the loss tangent.
* Spring damper model which gives single exponential relaxation.
* Single exponential relaxation E(t) on a log scale. *
* Demonstrations.
* Stiffness / loss plot.
Broadband viscoelastic spectroscopy (BVS)
* Instrument diagram
* slow
* fast
* Instrument
* Instrument functions
* Instrument chamber
* Resonant Ultrasound Spectroscopy (RUS)
* RUS diagram
* setup image,
* scan on scope,
* Maynard pdf of Physics Today article by Julian Maynard
* animations of vibration by Julian Maynard
* RUS via R. Leisure
* Industrial non destructive testing
* Measure damping via RUS, pdf,
shear mode RUS pdf after Lakes.
Viscoelastic composites
* Composite Structure.
* Bounds on composite stiffness.
* Stiffness loss map, theory
* Stiff-loss shape
* Stiff-loss stiff phase
Viscoelastic Materials
* Causal mechanisms
* PMMA (Polymethy methacrylate) Viscoelasticity. A broadband spectrum.
* Indium-Tin Viscoelasticity. A broadband spectrum.
* InSn and models
* Stiffness / loss plot: comparison of materials.