Effects of PZT particle-enhanced ply interfaces on the vibration damping behavior of CFRP composites

• Published in: Composites. Part A, Applied science and manufacturing Vol. 42; no. 10; pp. 1477 - 1482
• Main Authors: Kim, Sang Yup, Tanimoto, Toshio, Uchino, Kenji, Nam, Chan Hee, Nam, Sahn, Lee, Woo Il
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.10.2011; Elsevier
• Subjects: Applied sciences; Carbon black; Carbon fiber reinforced plastics; carbon fibers; Coating; coatings; electric current; Exact sciences and technology; Forms of application and semi-finished materials; heat; Laminates; lead; Lead zirconate titanate; Lead zirconate titanates; Loss factor; Optimization; particles; Particulate composites; Ply interface; Polymer industry, paints, wood; polymers; soot; Technology of polymers; Thresholds; vibration; Vibration damping; Loss factor; Ply interface; Carbon black; Lead zirconate titanate; Electrical properties; Fiber reinforced material; Epoxy resin; Lead Titanates; Experimental study; Mineral fiber; Hybrid composite; Oxide ceramics; Composite material; Surface treatment; Vibration damping; Dynamic mechanical properties; Concentration effect; Coated particle; Lead Zirconates; Electric resistivity; Mechanical loss; Carbon fiber
• ISSN: 1359-835X; 1878-5840
• DOI: 10.1016/j.compositesa.2011.06.014

In this study, vibration damping behavior of carbon fiber reinforced polymer composites was investigated when ply interfaces were enhanced by lead zirconate titanate (PZT) particles. The influence of particle loading and carbon black coating of particles was analyzed using the dynamic mechanical analysis. When plain PZT particles were distributed in the ply interfaces, the loss factor increased but suddenly dropped with increased particle loading, producing a threshold effect. As the loss factor represents the joule heat of electric current between PZT particles and carbon fibers, the sudden drop implies that there exists incomplete connectivity. To demonstrate the effect of incomplete connectivity, plain PZT particles were coated with carbon black of various weight fraction and the experiments were repeated. The results show there exists an optimal coating ratio of carbon black where the loss factor reaches its maximum value. When the optimal coating was applied to plain PZT particles, the loss factors of composites continuously increased, eliminating the threshold effect.