Supplementary Text from Rate-based structural health monitoring using permanently installed sensors

S1. Uncertainty of linear rate estimates calculated from a series of measurements S2. Demonstration that fatigue is a positive feedback mechanism that is consistent with Voight's postulated relationship S3. Demonstration that creep crack growth is a positive feedback mechanism that is consistent with Voight's postulated relationship S4. Demonstration that the gravitational waves from inspiraling black holes behave according to Voight's postulated relationship