Abstract: A method for inspecting the integrity of diesel exhaust filter by introducing air under pressure through one end of the structure and detecting the presence of air flow at an opposing end surface. The diesel exhaust filter is tested green.

Abstract: A method for inspecting the integrity of diesel exhaust filter by introducing air under pressure through one end of the structure and detecting the presence of air flow at an opposing end surface. The diesel exhaust filter is tested green.

Abstract: In an apparatus for scanning a transverse region of moving web, the speed of the web being scanning adjusts the clock of the camera that controls the scanning rate of the camera, to maintain a constant spacing of the scan regions, rather than vice versa, thereby allowing wide variations in web speed while maintaining constant scan region spacing. Additionally, the intensity of the web illumination is controlled as a function of web speed so that each scan region receives the same amount of light from the illumination means during each scan interval regardless of variations in web speed.

Abstract: A continuous process, namely the quality control of web production, is monitored and analyzed for defects with high resolution continuously, notwithstanding that the processing of signals for such continuous monitoring and analysis with high resolution requires handling of data at enormous data rates (e.g., billions of calculations per second). The system uses a computer architecture for continuous processing of the data in real time. In a first level of the architecture, signals arriving from the process (from the scanning of successive lines on the web) are digitized, and reduced to represent data corresponding to certain events, such as defects in the web. In a second level of the architecture, an array of parallel processors operate concurrently and continuously on the reduced data to provide outputs characterizing the events, for example, measurements of the locations and extents of the web defects.