Laser Ultrasonic Web Stiffness Sensor.

Patterson, T.

Technical Information Center Oak Ridge Tennessee

关键词: Sensors;    Lasers;    Funding;    Data analysis;    Manufacturing processes;   

RP-ID  :  DE2009945369

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

The objective is to provide a sensor that uses non-contact, laser ultrasonics to measure the stiffness of paper during the manufacturing process. This will allow the manufacturer to adjust the production process in real time, increase filler content, modify fiber refining and as result produce a quality product using less energy. The sensor operates by moving back and forth across the paper web, at pre-selected locations firing a laser at the sheet, measuring the out-of-plane velocity of the sheet then using that measurement to calculate sheet stiffness.