A wellbore logging tool system, comprising: a processor ; a memory ; a wellbore logging tool comprising an acoustic transmitter; a signal generator configured to transmit a signal to the wellbore logging tool to vibrate the acoustic transmitter; and a logging tool control module operable to: cause the signal generator to transmit an actuation signal to generate vibrations in the acoustic transmitter; characterized in that the logging tool control module is operable to: cause the signal generator to transmit a damping control signal to slow the vibrations of the acoustic transmitter; receive sensor signals from one or more sensors coupled to the wellbore logging tool after the damping control signal has been transmitted to the acoustic transmitter; determine one or more expected sensor signals using the damping control signal; determine error values using the expected sensor signals and the sensor signals received from the one or more sensors; compare the error values with one or more thresholds; and determine whether a fault exists in the wellbore logging tool system based on the comparison. a processor ; a memory ; a wellbore logging tool comprising an acoustic transmitter; a signal generator configured to transmit a signal to the wellbore logging tool to vibrate the acoustic transmitter; and a logging tool control module operable to: cause the signal generator to transmit an actuation signal to generate vibrations in the acoustic transmitter; characterized in that the logging tool control module is operable to: cause the signal generator to transmit a damping control signal to slow the vibrations of the acoustic transmitter; receive sensor signals from one or more sensors coupled to the wellbore logging tool after the damping control signal has been transmitted to the acoustic transmitter; determine one or more expected sensor signals using the damping control signal; determine error values using the expected sensor signals and the sensor signals received from the one or more sensors; compare the error values with one or more thresholds; and determine whether a fault exists in the wellbore logging tool system based on the comparison. cause the signal generator to transmit an actuation signal to generate vibrations in the acoustic transmitter; characterized in that the logging tool control module is operable to: cause the signal generator to transmit a damping control signal to slow the vibrations of the acoustic transmitter; receive sensor signals from one or more sensors coupled to the wellbore logging tool after the damping control signal has been transmitted to the acoustic transmitter; determine one or more expected sensor signals using the damping control signal; determine error values using the expected sensor signals and the sensor signals received from the one or more sensors; compare the error values with one or more thresholds; and determine whether a fault exists in the wellbore logging tool system based on the comparison. cause the signal generator to transmit a damping control signal to slow the vibrations of the acoustic transmitter; receive sensor signals from one or more sensors coupled to the wellbore logging tool after the damping control signal has been transmitted to the acoustic transmitter; determine one or more expected sensor signals using the damping control signal; determine error values using the expected sensor signals and the sensor signals received from the one or more sensors; compare the error values with one or more thresholds; and determine whether a fault exists in the wellbore logging tool system based on the comparison. <EOS>