An Experimental Investigation of Stress Waves in Rods of a Fiber-Reinforced Composite.
Abstract
This work aims at observing and measuring phase velocity, attenuation, and dispersion of stress waves in fiber-reinforced rods by the generation of longitudinal waves. The propagation of pulses in square bars of glass-epoxy fiber reinforced material is observed experimentally. Fiber orientation is varied from parallel to perpendicular to the bar's axis. Phase velocities are compared with those predicted from taking an effective Young's modulus for the bar. Geometric dispersion is considered by examining sinusoidal vibrations of composite rods of circular cross-section. Dispersion curves are predicted based on a lateral inertia correction and measured using a resonance method. The experimental results are not very extensive but nevertheless sufficient for qualitative conclusions to be advanced. Damping measurements are taken from oscilloscope records of free oscillations of the round composite rods. Again the results are not as complete as desired, but some conclusions can be drawn. (Author, modified-PL)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1973
- Accession Number
- AD0776402
Entities
People
- Peter J. Arseneaux Jr
Organizations
- Brown University