Abstract: The Yang＇s modulus is obtained by the measurement of free vibration frequency of a cantilever with damping. During the process, some comprehensive and researchful knowledge are concerned, which include force sensor, Wheatstone bridge, digital oscilloscope, computer interface, fast Fourier transform and LabVIEW virtual instrumentation.

Key words: Young＇s modulus, cantilever beam, digital oscilloscope, LabVIEW