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.
Exponential and power law, linear scale.
Exponential and power law, log scale.
Creep vs. relaxation, direct Stieltjes construction
Stiffness / loss plot.
Broadband viscoelastic spectroscopy (BVS)
Resonant Ultrasound Spectroscopy (RUS)
scan on scope,
Maynard pdf of Physics Today article by Julian Maynard
Videos of vibration modes of isotropic cylinder with length equal diameter, after T. Jaglinski
RUS via R. Leisure
Industrial non destructive testing
Measure damping via RUS, pdf,
shear mode RUS pdf after Lakes.
Bounds on composite stiffness.
Stiffness loss map, theory
Stiff-loss stiff phase
PMMA (Polymethy methacrylate) Viscoelasticity. A broadband spectrum.
Indium-Tin Viscoelasticity. A broadband spectrum.
InSn and models
Stiffness / loss plot
Stiffness / loss plot: new materials.
Case study: Baby heads improper treatment.
Misshapen head reshaped
Baby helmet for head reshaping