Journal Published Online: 01 January 2002
Volume 30, Issue 1

Using X-ray Computerized Tomography for Characterization of Defects in Cartridge Filters

CODEN: JTEVAB

Abstract

Cartridge filter manufacturers conventionally use air permeability and bubble point tests for the evaluation of integrity and filtration rating of their filter elements. These tests reveal information only upstream and downstream of the filters. If a region of low density and a region of high density (compared to the mean density of the filter) exist in the interior of the element, these two regions may be superimposed and the results of the test may cause acceptance of an imperfect filter. The present paper shows the use of an X-ray computerized tomography scanner for visualization of internal defects in the cartridge filter elements used in industrial and domestic applications. Tomographic images with good contrast were obtained. The images clearly revealed cracks in the activated carbon filter and regions of high density in the fibrous filter (meltblown type). Finally, the main objective of this paper is to show that X-ray computerized tomography can be used successfully within the filter industries as a potential tool in the evaluation of existing products, and as a support in new product development.

Author Information

Maschio, C
Faculdade de Engenharia Mecânica, Universidade Estadual de Campinas, Campinas, SP, Brazil
de Arruda, ACF
Faculdade de Engenharia Mecânica, Universidade Estadual de Campinas, Campinas, SP, Brazil
Pages: 4
Price: $25.00
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Details
Stock #: JTE12292J
ISSN: 0090-3973
DOI: 10.1520/JTE12292J