Journal of Advanced Ceramics

, Volume 7, Issue 1, pp 5–16 | Cite as

Effects of regenerative mechanical vibration on the mechanical integrity of ceramic diesel particulate filters

  • Gbadebo Owolabi
  • Akindele Odeshi
  • Paul Ragaller
  • Alexander Sappok
Open Access
Research Article


In this study, the effects of mechanical vibration on the mechanical properties of ceramic diesel particulate filters (DPFs) were investigated. The goal is to determine how the mechanical vibration used in the regenerative ash cleaning process for these filters affects their mechanical integrity during subsequent reuse. Both virgin and vibrated DPF samples were subjected to com-pressive and 3-point flexural loading at three different loading rates along axial and tangential directions. Statistical analysis was conducted to determine the significance of variation in the compressive and flexural strengths of the DPFs as a result of exposure to mechanical vibration. The results show that there is no statistically significant difference in both compressive and flexural strengths of the virgin DPFs and the DPFs subjected to the same level of mechanical vibration typically used in ash cleaning of DPFs. When the intensity of vibration was doubled, the drop in compressive strength became statistically significant, but less than 10% under axial loading. However, no drop in flexural strength was observed for DPFs subjected to this high intensity of mechanical vibration. The safe threshold for mechanical vibration of ceramic filters is considered to be much higher than that currently used in vibration-based ash cleaning process.


diesel particulate filter (DPF) cordierite mechanical testing filter regeneration vibration-based ash cleaning technology 



This material is based upon work supported by the National Science Foundation under Grant No. 1230444. The authors would like to thank Dr. Anthony Walters and Dr. Prakash Balan for their support and engaging discussions.


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© The Author(s) 2017

Open Access The articles published in this journal are distributed under the terms of the Creative Commons Attribution 4.0 International License (, which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author (s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Authors and Affiliations

  • Gbadebo Owolabi
    • 1
  • Akindele Odeshi
    • 1
    • 2
  • Paul Ragaller
    • 3
  • Alexander Sappok
    • 3
  1. 1.Department of Mechanical EngineeringHoward UniversityWashingtonUSA
  2. 2.Department of Mechanical EngineeringUniversity of SaskatchewanSaskatoonCanada
  3. 3.CTS Corporation Boston Innovation OfficeMaldenUSA

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