This work presents a theoretical study of the effects on stiffness and deflection of embedding piezoelectric fibers within
glass fiber reinforced polymer beams. Through this study, enhancements to the beam stiffness and flexural capabilities
are analyzed as a result of the piezoelectric effect of the embedded piezoelectric fibers. Fiber orientation of glass fiber
reinforced polymer laminated beams is optimized based on stiffness requirements following classical lamination theory.
The piezoelectric effect on the glass fiber reinforced polymer beam is analyzed for simply-supported mechanical
boundary conditions. The symmetric unidirectional general stacking sequence laminates are shown to have optimal
stiffness and deflection behavior. The addition of piezoelectric fibers with d333 piezoelectric actuation mode further
increases stiffness and reduces deflection. This enables tuning of the mechanical properties of the laminate beam.
Introducing piezoelectric fibers to the reinforcing phase further optimizes the deflection range under bending while
additionally minimizing the weight of the structure. The strengthening effect of the piezoelectric fibers can reduce the
required number of laminate layers while maintaining optimal behavior.
John A. Gallagher, Roselita Fragoudakis, Vladimir Kim, and Alfred Larsson, "Low-weight: high-stiffness glass fiber reinforced polymer beams with embedded piezoelectric fibers," Proc. SPIE 10164, Active and Passive Smart Structures and Integrated Systems 2017, 101640F (Presented at SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring: March 26, 2017; Published: 11 April 2017); https://doi.org/10.1117/12.2261110.
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