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  1. patrickmech

    Time temperature superposition

    Hi, I am trying to evaluate viscoelastic properties of a polymer through dynamic mechanical analysis. I am using time temperature superposition principle to evaluate properties at extended frequency. I am wondering if there is any formula that relates temperature with time (or frequency) which...
  2. patrickmech

    Modal analysis with dampers

    Hi, I am trying to do experimental modal analysis on a structure with tuned mass dampers (TMD) mounted discreetly on it. When compared to testing an undamped (without TMDs) structure, what are the issues / precautions that need to be considered while testing, curve fitting? Suggestions on how...

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