Bond Surface Contamination Imaging Using an AOTF Spectrometer
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Begun in 1973, the Review of Progress in Quantitative Nondestructive Evaluation (QNDE) is the premier international NDE meeting designed to provide an interface between research and early engineering through the presentation of current ideas and results focused on facilitating a rapid transfer to engineering development.
This site provides free, public access to papers presented at the annual QNDE conference between 1983 and 1999, and abstracts for papers presented at the conference since 2001.
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Abstract
Because of inherent limitations of currently implemented methods for bond surface contamination detection such as visual inspection with “black light” and optically stimulated electron emission (OSEE), research and development activities have been ongoing to develop alternate methods for detection of contamination on bonding surfaces of solid rocket motors (SRM). Limitations of current technology include the inability to identify contaminants or to effectively detect their presence on rough aluminum and most polymeric substrates characteristic of case, insulator, and nozzle materials. In this work, diffuse reflectance IR spectroscopy using an AOTF spectrometer has been applied to the problem of mapping or scanning SRM type materials — specifically, aluminum 7075 with hydrocarbon contamination.