Nondestructive Quality Assurance of Ceramic Filters Using Noncontact Dynamic Characterization
Source abstract
Abstract
Ceramic candle filters are stiff cylindrical structures arranged in rosettes in a hot gas vessel. Custom-made with strong composite materials, these filters are designed to withstand heating and cooling cycles of very high temperature gradients during coal energy production processes. To ensure consistency in the manufactured filters, noncontact dynamic characterization using laser vibrometry is proposed as a factory quality control technique. To evaluate the proposed technique, a sensitivity study using both contact and noncontact vibration measurements is first conducted. The shift in natural vibration frequencies is used as a quality indicator for likely manufacturing variables. Six candle filters are tested using dynamic impact tests. Contact and noncontact results are compared with theoretical natural frequency values, which show that laser results were “noisier” due to dropout from speckle noises. The results are used to establish the sensitivity of the technique, which indicates that dynamic characterization is a valid nondestructive testing technique for quality assurance of the ceramic filters, provided that the manufactured filters have a quality variation greater than 3.21%.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Structural Health Monitoring Techniques · Optical measurement and interference techniques · Ultrasonics and Acoustic Wave Propagation
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (18)
Show source-provided references
1. M. A. Alvin, T. E. Lippert, E. E. Smeltzer, and G. J. Bruck, “Advanced hot gas filter performance and characterization,” in Proceedings, Advanced Coal-Based Power and Environment Systems, 1998, National Energy Technology Laboratory, the U.S. Department of Energy, Morgantown, WV.
2. S. Ito, T. Tanaka, and S. Kawamura, “Changes in pressure loss and face velocity of ceramic candle filters caused by reverse cleaning in hot coal gas filtration,” Powder Technol. 100, 32–40 (1998).10.1016/S0032-5910(98)00049-7 ↗
3. M. A. Alvin, “Impact of char and ash fines on porous ceramic filter life,” Fuel Process. Technol. 56, 143–168 (1998).10.1016/S0378-3820(97)00088-X ↗
4. R. D. Adams, P. Cawley, C. J. Pye, and B. J. Stone, “A vibration technique for nondestructively assessing the integrity of structures,” J. Mech. Eng. Sci. 20(2) (1978).10.1243/JMES_JOUR_1978_020_016_02 ↗
5. H. L. Chen, A. C. Kiriakidis, and S. W. Peng, “Nondestructive Evaluation of Ceramic Candle Filters Using Vibration Response,” in Proceedings, Advanced Coal-Based Power and Environment Systems, 1998, National Energy Technology Laboratory, the U.S. Department of Energy, Morgantown, WV.
6. P. Yue, S. E. Chen, and E. R. Monazam, “Sensitivity Analysis of Vibration Testing of Ceramic Candle Filters,” in Proceedings, 19th International Modal Analysis Conference, 2001, SEM, Kissimmee, FL.
7. P. Yue, “NETL NDE Project Overview,” in Lecture Notes, Presentation to the Gasification and Separation Division, 2000, National Energy Technology Laboratory, U.S. Department of Energy, Morgantown, WV, August 31.
8. B. Dittler, R. Gutmann, H. Lichtenberger, Weber, and G. Kasper, “Optical in situ measurement of dust cake thickness distributions on rigid filter media for gas cleaning,” Power Technol. 99, 177–184 (1998).10.1016/S0032-5910(98)00102-8 ↗
9. B. S. Kang, E. K. Johnson, J. Baberio, and S. Gregory, “Test Facility for the Investigation of Surface Regeneration on a Candle Filter,” in Advanced Coal-Based Power and Environmental Systems 1998 Conference,1998, Morgantown, WV, July 21–23.
10. P. Sage and J. L. Melsa, System Identification, 1971, Academic, New York.
11. R. D. Blevins, Formulas for Natural Frequency and Mode Shape, 1979, Krieger, Malabar, FL.
12. Y. Nishihama, Dynamic Characterization for Quality Control of Ceramic Candle Filters, M.S. Thesis, 2002, Department of Civil and Environmental Engineering, University of Alabama at Birmingham.
13. “SCHUMACHER,” 2002, available at 〈http://www.schumacher-usa.com/home.htm〉 (August 30).
14. J. D. Spain, Properties of Ceramic Filters, Final Report, DE-AC-21-94MC31160, 1996, Morgantown Energy Technology Center, Department of Energy, Morgantown, WV.10.2172/425210 ↗
15. Z. Huque, D. Mei, and M. Zhou, “Initial failure analysis of ceramic filters,” in Proceedings, Advanced Coal-Based Power and Environment Systems, 1996, National Energy Technology Laboratory, the U.S. Department of Energy, Morgantown, WV.
16. DADiSP, Signal Processing Software, 1999, DADiSP.
17. D. Oliver, “Scanning Laser Vibrometers”, Automotive Eng. March, 71–75 (1996).
18. S. E. Chen, S. Venkatappa, S. H. Petro, and H. V. S. GangaRao, “A novel damage detection technique using scanning laser vibrometry and a strain energy distribution method,” Mater. Eval. 58(12), 1389–1394 (2000).