Real-time quality assurance testing using photonic techniques: Application to iodine water system

A feasibility study of the use of inspection systems incorporating photonic sensors and multivariate analyses to provide an instrumentation system that in real-time assures quality and that the system in control has been conducted. A system is in control when the near future of the product quality is predictable. Off-line chemical analyses can be used for a chemical process when slow kinetics allows time to take a sample to the laboratory and the system provides a recovery mechanism that returns the system to statistical control without intervention of the operator. The objective for this study has been the implementation of do-it-right-the-first-time and just-in-time philosophies. The Environment Control and Life Support Systems (ECLSS) water reclamation system that adds iodine for biocidal control is an ideal candidate for the study and implementation of do-it-right-the-first-time technologies

Spectroscopy and multivariate analyses applications related to solid rocket nozzle bondline

Chemical composition and molecular orientation define the properties of materials. Information related to chemical composition and molecular configuration is obtained by various forms of spectroscopy. Software algorithms developed for multivariate analyses, expert systems, and Artificial Intelligence (AI) are used to conduct repetitive operations. The techniques are believed to be of particular significance toward achieving TQM objectives. The objective was to obtain information related to the quality of the bondline in the solid rocket motor, SRM, nozzle. Hysol 934 NA, a room temperature curing epoxide resin, is used as the bonding agent. A good bond requires that the adhesive be placed on a properly prepared metal surface, the adhesives Part A and B be mixed in appropriate ratio from material within shelf life specifications. Spectroscopic data was obtained for surfaces prepared according to specifications, contaminated metal surfaces, samples of the epoxide adhesive at times that represent shelf aging from 3 months to 2 years, several mix ratio of A to B, and curing material. Temperature was found to be a significant factor. The study concentrated on pot life and mix ratio

THE INFRARED SPECTRUM OF DETENE∗DETENE^{\ast}

Author Institution: Department of Chemistry, The University of TennesseeThe infrared spectrum of $CD_{2}CO$ and the spectrum of mixtures of CHDCO, $CD_{2}CO$ and $CH_{2}CO$ have been observed from 2.5 to $25 \mu$ with a Perkin-Elmer Model 12-C Spectrometer. In re-examining the spectrum of $CH_{2}CO$, a record of the KBr region has been obtained with much greater resolution than has been previously reported. Grating spectra have been recorded over the regions of $\nu_{4}, \nu_{5}, \nu_{6}, \nu_{8}$, and $2\nu_{9}$ for $CH_{2}CO$ and $\nu_{3}, \nu_{4}, \nu_{6}$, and $2\nu_{9}$ for $CD_{2}CO$. The analysis of some of these bands has been carried out and moments of inertia have been obtained for both molecules. Examination of the prism and grating spectra lead to significant changes in the assignments of $\nu_{6}$ and $\nu_{8}$ which were given by Halverson and Williams for $CH_{2}CO$. Assignments of the other fundamentals of $CH_{2}CO$ remain unchanged. A satisfactory assignment of the observed bands of $CD_{2}CO$ and CHDCO has been obtained