@article{cox_titus_clapp_1999, title={An on-line monitoring system to recognize stitch defects through thread motion and high speed image analyses}, volume={121}, ISSN={["1087-1357"]}, DOI={10.1115/1.2830561}, abstractNote={A sensor system that inspects a garment as it is being sewn has the potential to eliminate much of the cost associated with inspection and to improve product quality. An economically feasible on-line stitch quality monitoring system is under development that utilizes commercially-available, low-cost piezoelectric sensors and a PC-based Linux data acquisition system. The sensors respond to the vibration caused by the thread motion and output a corresponding waveform used to study and model the formation of single stitches. As a result, the presence of periodic occurrences can be identified and attributed to proper stitch formation. Conversely, the absence of such events can be utilized to signal the presence of single stitch defects and diagnose their causes. Finally, high speed image analysis of the sewing threads has verified conclusions drawn from the output signals of the piezoelectric sensors and contributed to a better understanding of the dynamics involved in high speed sewing.}, number={1}, journal={JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING-TRANSACTIONS OF THE ASME}, author={Cox, RN and Titus, KJ and Clapp, TG}, year={1999}, month={Feb}, pages={104–108} } @misc{cox_clapp_titus_1998, title={Stitch quality monitoring system for sewing machines}, volume={5,746,145}, number={1998 May 5}, publisher={Washington, DC: U.S. Patent and Trademark Office}, author={Cox, R. N. and Clapp, T. G. and Titus, K. J.}, year={1998} } @article{titus_clapp_zhu_gardner_1997, title={A preliminary investigation of a beta-particle transmission gauge for seam quality determination}, volume={67}, ISSN={["0040-5175"]}, DOI={10.1177/004051759706700107}, abstractNote={ Automation of assembly operations throughout the textile industry requires the development and implementation of new quality monitoring systems. A beta-particle transmission gauge using a 90Sr source is investigated as a potential on-line seam inspection technique. The fundamentals of beta-particle transmission radio gauges are discussed in the context of their applicability to textile materials, and preliminary results are obtained with a laboratory prototype device. Unknown sample thicknesses for a variety of woven and knit fabrics are determined from the counting rate intensities of radiation transmitted through the fabric and the experimentally derived areal density. Single-fold knit hems and felled denim seams are evaluated by the gauge system. Results indicate that the number of layers present within the hem or seam can be rapidly and accurately determined to assess seam quality. }, number={1}, journal={TEXTILE RESEARCH JOURNAL}, author={Titus, KJ and Clapp, TG and Zhu, Z and Gardner, RP}, year={1997}, month={Jan}, pages={23–34} } @misc{clapp_titus_davis_1997, title={Apparatus and method for monitoring predetermined seam characteristics}, volume={5,671,689}, number={1997 Sept. 30}, publisher={Washington, DC: U.S. Patent and Trademark Office}, author={Clapp, T. G. and Titus, K. J. and Davis, A. B.}, year={1997} } @article{gayler_titus_1997, title={Optoelectronic devices: Their use in textile testing and yarn and fabric production}, volume={12}, journal={Textile Horizons (London, England)}, author={Gayler, J. and Titus, K.J.}, year={1997}, pages={16–20} } @inproceedings{cox_k.j._1996, title={Development of an on-line monitoring system for stitch quality}, volume={1}, booktitle={Textile Industry Division Symposium}, author={Cox, R. and K.J., Titus.}, year={1996} }