The dynamic Young's modulus of paperboards measured by a free-free bean method was compared to that obtained using a vibrating-reed method to check if the vibrating-reed method yields a reliable value. The free-free beam vibrating mode yields one of the most reliable values because it satisfies the boundary conditions of the differential equation for vibration. The two sets of values were found to be close. In the process of correcting for the shear effect on Young's modulus resulting from higher vibrating modes in the free-free vibrating beam method with a concentrated mass attached to one end of the specimen, the transverse shear modulus could be calculated.
|Number of pages||5|
|Publication status||Published - May 1 1986|
All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)
- Media Technology
- Materials Science(all)
- Mechanical Engineering