On-machine ultrasonic sensors for paper stiffness. Final report

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This final report presents the results of a 5-year effort by the Institute of Paper Science and Technology (IPST) and its participating partners. The objective of this work was to develop and demonstrate sensors capable of measuring the velocity of ultrasound in the out-of-plane (ZD) and in-plane directions of paper as it is being produced on a commercial paper machine. On-machine ultrasonic measurements can be used to determine various mechanical properties of paper and to monitor process status and product quality. This report first presents a review of the background and potential benefits of on-machine ultrasonic measurements, then summarizes the ... continued below

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Medium: P; Size: 71 pages

Creation Information

Hall, Maclin S.; Jackson, Theodore G. & Brown, Ernest (Andy) April 1, 2000.

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Description

This final report presents the results of a 5-year effort by the Institute of Paper Science and Technology (IPST) and its participating partners. The objective of this work was to develop and demonstrate sensors capable of measuring the velocity of ultrasound in the out-of-plane (ZD) and in-plane directions of paper as it is being produced on a commercial paper machine. On-machine ultrasonic measurements can be used to determine various mechanical properties of paper and to monitor process status and product quality. This report first presents a review of the background and potential benefits of on-machine ultrasonic measurements, then summarizes the results of previous work. The ZD measurement system involving the use of ultrasonic transducers in fluid-filled wheels is described in detail, including the method of measurement, the wheel mounting hardware, the on-machine operation, and an overview of the system software. Mill-trial results from two bump tests when producing 69{number_sign} and 55{number_sign} linearboard are presented. For the 69{number_sign} trial the correlation of ZD transit time with plybond and with ZDT (Z-direction tensile or internal bond strength) was greater than 0.8 (R squared). Also observed were ZD stiffness responses to refining and to calendering. ABB Industrial Systems Inc. was responsible for the in-plane sensor. A paper describing ABB's sensor and mill experience is appended.

Physical Description

Medium: P; Size: 71 pages

Notes

OSTI as DE00807457

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  • Other Information: PBD: 1 Apr 2000

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  • Report No.: DOE/CE-41156-Final
  • Grant Number: FCO2-95CE41156
  • DOI: 10.2172/807457 | External Link
  • Office of Scientific & Technical Information Report Number: 807457
  • Archival Resource Key: ark:/67531/metadc737139

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Creation Date

  • April 1, 2000

Added to The UNT Digital Library

  • Oct. 18, 2015, 6:40 p.m.

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  • July 25, 2016, 7:03 p.m.

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Hall, Maclin S.; Jackson, Theodore G. & Brown, Ernest (Andy). On-machine ultrasonic sensors for paper stiffness. Final report, report, April 1, 2000; United States. (digital.library.unt.edu/ark:/67531/metadc737139/: accessed September 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.