Experimental investigation of mechanical sustainability and acoustic performance of fly ash cenosphere/epoxy polymer composites

Sriharsha Hegde, N. H. Padmaraj, V. Siddesh, T. S. Sunaya, K. Adithya Kini, Vishal K. Sanil

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


Hollow spherical fly ash Cenosphere is a by-product of Coal firing process in thermal power plants and nowadays has become a substitute for the other organic fillers in the composite industry. The present study investigates the mechanical and acoustic performance of Cenosphere/Epoxy based polymer composites. Void content, Shore Hardness, Tensile, Flexural, Impact and Acoustic studies were conducted on Epoxy specimens containing 0, 3, 5 and 7% of Cenosphere by weight. Surface morphology and failure pattern of the tensile failure samples were performed by using scanning electron microscope technique. Incorporation of Cenosphere into Epoxy reduced the void content from 4.27 to 2.54 % and increased the Shore hardness from 80.8 ± 1.44 to 85.8 ± 1.78 when the filler content was increased from 3 to 5%. Impact strength, Tensile and Flexural modulus showed an incremental trend with the increase of weight percentage of Cenosphere. Examination of tensile failure surface showed presence of twist hackles and better interlocking of Cenosphere with Epoxy matrix. Density of the specimens played vital role in sound absorption characteristics. Addition of Cenosphere in Epoxy deteriorates the sound absorption behaviour of the material as compared to neat Epoxy.

Original languageEnglish
JournalJournal of King Saud University - Engineering Sciences
Publication statusAccepted/In press - 2021

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Materials Science (miscellaneous)
  • Fuel Technology
  • Fluid Flow and Transfer Processes
  • Computer Networks and Communications
  • Industrial and Manufacturing Engineering


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