The method of vibration diagnosis for power plant equipment is generally used the modal method using impact hammer. However, it takes a long time to measure and verify the response frequency which is associated with the specific resonant frequency. Therefore, this research deals with the simpler method comparing to the measured modal characteristics using impact hammer. To find an efficient vibration control method, the flexural response of structure and rotating machinery such as turbine, pumps, and generator which are commonly encountering in power plant equipment. The used eccentric mass shaker is a very powerful and available vibration diagnosis method to carry out forced vibration test on structures as well as rotating machines by means of generating a harmonic load. Through the experimental verification using the proposed vibration diagnosis, it is helpful and useful for site experts and practical engineers to evaluate the vibration resonance in field audits.

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