To design and fabricate a model static and dynamic balancing machine for single disc and rigid rotors / Aminurrashid Zulkifly and Norzemi Mohd Salleh

Vibratory phenomena are common in nature, in some of the historical significant acts and crafts, and in many of the processes and products of modern technology. Mechanical vibration at Relatively low frequencies is extensively U3ed in industry for separation, sieving, conveying, compacting, percusive drilling and various machining techniques. At very high mechanical frequencies, modern electronic techniques have made possible the generation of high intensity beams of ultrasonic vibratory energy using magneto-strictive and piezo- electric transducers. Vibration level monitoring or diagnostics with remote indicating or recording instrumentation is increasingly being used to facilitate the supervision of mechines and plant, where permissible limits for satisfactory operation in relation to malfunction and wear may be set from experience. Also, program- med environmental vibration testing on sensitive equipment to ensure satisfactory operation and life in service is a widely used procedure. In contrast to the foregoing uses of mechanical vibration, there is a negative or undesired aspect of vibration that is of widespread concern to engineers. The importance of this problem is indicated by the entensive literature on vibration causes analysis, and control. This situation arises largely as a side- effect of mechanisation in industry and transport where the trend is toward high power and speed in prime movers and other machines concurrently with lighter forms of construction in all types of vehicles and structures. Unwanted vibration can be detrimetal to the proper operation and useful life of equipment, and to human comfort and health.