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  1. Mechanical Resonance

    Linked via "resonance peak"

    The Quality Factor ($Q$) and Amplitude Response
    The sharpness of the resonance peak is quantified by the quality factor ($Q$). A high $Q$ factor signifies low damping and thus a sharp, pronounced resonance peak.
    $$Q = \frac{\omega_0 m}{c}$$

  2. Structural Dynamics

    Linked via "resonance peaks"

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    The FRF clearly shows resonance peaks where the denominator approaches zero (for undamped systems) or where the imaginary component of the denominator is minimized (for damped systems). Analyzing the bandwidth of these peaks allows engineers to back-calculate the damping ratios ($\zeta_i$).