Abstract
An experimental study has been conducted to determine the mechanical properties of fly-ash/polyurea composites by measuring their longitudinal and shear wave velocities, and attenuations at various fly ash volume fractions, using ultrasonic. The complex-valued longitudinal and shear moduli were computed from these measurements at various temperatures. It was observed that a 30% volume fraction addition of fly ash has increased the longitudinal storage and loss moduli and shear storage and loss moduli by up to 22%, 141%, 298% and 125%, respectively. The complex bulk modulus and Poisson's ratio of the composites at 1. MHz were also estimated. Additionally, a computational model based on the method of dilute-randomly-distributed inclusions was created to estimate the dynamic mechanical properties of the composites. The experimental and computational results were compared and showed good agreement.
| Original language | English |
|---|---|
| Pages (from-to) | 264-272 |
| Number of pages | 9 |
| Journal | Materials and Design |
| Volume | 89 |
| DOIs | |
| State | Published - 5 Jan 2016 |
| Externally published | Yes |
Keywords
- Mechanical properties
- Micro-mechanics
- Particle-reinforcement
- Ultrasonics
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