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Journal articles
Open Access
Relationship of Surface Strength and Bulk Strength Properties in Uncoated Woodfree Paper, TAPPI JOURNAL February 2011

Relationship of Surface Strength and Bulk Strength Properties in Uncoated Woodfree Paper, TAPPI JOURNAL February 2011

Journal articles
Open Access
Water profiles of the forest products industry and their utility in sustainability assessment, TAPPI JOURNAL July 2011

Water profiles of the forest products industry and their utility in sustainability assessment, TAPPI JOURNAL July 2011

Journal articles
Open Access
A method for measuring the in-plane compressive strength and the compression behavior of coating layers, TAPPI JOURNAL July 2011

A method for measuring the in-plane compressive strength and the compression behavior of coating layers, TAPPI JOURNAL July 2011

Journal articles
Open Access
Dynamic Modeling of a Paper Machine, Part I: Programming and Software Development, TAPPI JOURNAL, January 2007

Dynamic Modeling of a Paper Machine, Part I: Programming and Software Development, TAPPI JOURNAL, January 2007

Journal articles
Open Access
Evaluating the Surface Energy of Laboratory-Made Paper Sheets by Contact Angle Measurements, TAPPI JOURNAL, June 2007

Evaluating the Surface Energy of Laboratory-Made Paper Sheets by Contact Angle Measurements, TAPPI JOURNAL, June 2007

Journal articles
Open Access
Topography and Gloss of Precipitated Calcium Carbonate Coating Layers on a Model Substrate, TAPPI JOURNAL, May 2007

Topography and Gloss of Precipitated Calcium Carbonate Coating Layers on a Model Substrate, TAPPI JOURNAL, May 2007

Journal articles
Open Access
The influence of thickeners on coating surface structure: pair distribution analysis and correlations to structure and porosity, TAPPI JOURNAL, October 2007

The influence of thickeners on coating surface structure: pair distribution analysis and correlations to structure and porosity, TAPPI JOURNAL, October 2007

Magazine articles
Open Access
Leveraging mill-wide big data sets for process and quality i

Authors: Jianzhong Fu and Peter W. Hart | ABSTRACT: The MWV mill in Covington, VA, USA, experienced a long term trend of increasing episodes of paper indents that resulted in significant quantities of internal rejects and production downtime. When traditional troubleshooting techniques failed to resolve the problem, big data analysis techniques were employed to help deter-mine root causes of this negative and increasingly frequent situation. Nearly 6000 operating variables were selected for a deep dive, multi-year analysis after reviewing mill-wide process logs and 60000+ PI tags (data points) collected from one of the major data historian systems at the MWV Covington mill. Nine billion data points were collected from November 2011 to August 2014. Strategies and methods were developed to format, clean, classify, and sort the various data sets to compensate for process lag time and to align timestamps, as well as to rank potential causes or indicators. GE Intelligent Platforms software was employed to develop decision trees for root cause analysis. Insights and possible correlations that were previously invisible or ignored were obtained across the mill, from pulp-ing, bleaching, and chemical recovery to the papermaking process. Several findings led the mill to revise selected process targets and to reconsider a step change in the drying process. These changes have exhibited significant impacts on the mill’s product quality, cost, and market performance. Mill-wide communications of the identified results helped transform the findings into executable actions. Several projects were initiated.

Journal articles
Open Access
Digester thinning: Erosion-corrosion of internal flow channel headers, TAPPI JOURNAL August 2014

Digester thinning: Erosion-corrosion of internal flow channel headers, TAPPI JOURNAL August 2014

Journal articles
Open Access
Trends in pulp and paper mill emissions of SO2 and NOx, 1980-2010, TAPPI JOURNAL February 2014

Trends in pulp and paper mill emissions of SO2 and NOx, 1980-2010, TAPPI JOURNAL February 2014

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