Kirk K. Biegler
MTS Systems Corp., 14000 Technology Dr., Eden Prairie, MN 55344-2290
In recent years, the range of performance has been expanded for servohydraulic test systems utilized for vibration damping measurement. The tests now include: (1) temperature, frequency, and amplitude effects on dynamic characteristics, (2) fatigue effects on dynamic or static properties, (3) resonant frequency determination, (4) stress relaxation after impact, (5) tearing energy analysis, and (6) static deflection measurement. The performance capabilities of servohydraulic test equipment readily available today will be reviewed. Performance capabilities include the range of loading amplitudes, rates, and frequencies and also the automation capabilities that relate to the ease of use and versatility of data analysis currently available. Some of the most recent improvements will be highlighted to show the extended range of tests that servohydraulics can achieve.