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Merging Weather Data With Materials Response Data During Outdoor Exposure

Published

Author(s)

R S. Williams, A A. Sanadi, Corey C. Halpin, Christopher C. White

Abstract

As part of an outdoor exposure protocol for a studying the weathering of sealants, a full weather station was installed at the Forest Products Laboratory field test site near Madison, Wisconsin. Temperature, relative humidity, rainfall, ultraviolet (UV) radiation at 18 different wavelengths, and wind speed and direction are continuously being monitored. Using a specially designed apparatus, sealant specimens are subjected to weather-induced cyclic movement. The load deflection information and weather data can be correlated to yield information on critical factors affecting the materials performance. This report describes the instrumentation used in the outdoor test facility, the data collection system used for the study, and possible methods for analyzing the data. To establish a protocol for future work, two types of sealants (high and low modulus) were chosen for the initial phase of the work to test the concept and to ensure that the specimen and weather data files could be accessed and manipulated. The results show a clear link between the materials response and change in one of the main weather elements. For the outdoor exposure used in this work, weather-induced cyclic fatigue of sealants and documentation of stress and strain during cyclic movement are critical aspects of the experiment.
Proceedings Title
Proceedings of Woodcoatings: Foundations for the Future. Third International Wood Coatings Congress.
Conference Dates
October 28-30, 2002
Conference Location
The Hague, 1, NL
Conference Title
International Woodcoatings Congress

Keywords

instrumentation, materials response, modulus, Outdoor Exposure, Sealant, service life prediction, stress-strain, Wood Deflection

Citation

Williams, R. , Sanadi, A. , Halpin, C. and White, C. (2002), Merging Weather Data With Materials Response Data During Outdoor Exposure, Proceedings of Woodcoatings: Foundations for the Future. Third International Wood Coatings Congress., The Hague, 1, NL (Accessed June 15, 2024)

Issues

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Created September 30, 2002, Updated October 12, 2021