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Title: Extrapolating Accelerated UV Weathering Data: Perspective From PVQAT Task Group 5 (Presentation)

Abstract

Taskgroup 5 (TG5) is concerned with a accelerated aging standard incorporating factors including ultraviolet radiation, temperature, and moisture. Separate experiments are being conducted in support of a test standard via the regional sub-groups in Asia, Europe, and the United States. The authors will describe the objectives and timeline for the TG5 interlaboratory study being directed out of the USA. Qualitative preliminary data from the experiment is presented. To date, the encapsulation transmittance experiment has: replicated behaviors of fielded materials (including specimen location- and formulation additive-specific discoloration); demonstrated coupling between UV aging and temperature; demonstrated that degradation in EVA results from UV- aging; and obtained good qualitative comparison between Xe and UVA-340 sources for EVA. To date, the encapsulation adhesion experiment (using the compressive shear test to quantify strength of attachment) has demonstrated that attachment strength can decrease drastically (>50%) with age; however, early results suggest significant factor (UV, T, RH) dependence. Much remains to be learned about adhesion.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S)
OSTI Identifier:
1172943
Report Number(s):
NREL/PR-5J00-63850
DOE Contract Number:
AC36-08GO28308
Resource Type:
Conference
Resource Relation:
Conference: Presented at the 2015 NREL PV Photovoltaic Module Reliability Workshop, 24-27 February 2015, Golden, Colorado; Related Information: NREL(National Renewable Energy Laboratory)
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 47 OTHER INSTRUMENTATION; 36 MATERIALS SCIENCE; POLYMER; DURABILITY; RELIABILITY; INDOOR ACCELERATED TEST

Citation Formats

Miller, D., Annigoni, E., Ballion, A., Bokria, J., Bruckman, L., Burns, D., Elliott, L., French, R., Fowler, S., Gu, X., Honeker, C., Khonkar, H., Kohl, M., Krommenhoek, P., Peret-Aebi, L., Phillips, N., Scott, K., Sculati-Meillaud, F., and Shioda, T.. Extrapolating Accelerated UV Weathering Data: Perspective From PVQAT Task Group 5 (Presentation). United States: N. p., 2015. Web.
Miller, D., Annigoni, E., Ballion, A., Bokria, J., Bruckman, L., Burns, D., Elliott, L., French, R., Fowler, S., Gu, X., Honeker, C., Khonkar, H., Kohl, M., Krommenhoek, P., Peret-Aebi, L., Phillips, N., Scott, K., Sculati-Meillaud, F., & Shioda, T.. Extrapolating Accelerated UV Weathering Data: Perspective From PVQAT Task Group 5 (Presentation). United States.
Miller, D., Annigoni, E., Ballion, A., Bokria, J., Bruckman, L., Burns, D., Elliott, L., French, R., Fowler, S., Gu, X., Honeker, C., Khonkar, H., Kohl, M., Krommenhoek, P., Peret-Aebi, L., Phillips, N., Scott, K., Sculati-Meillaud, F., and Shioda, T.. Sun . "Extrapolating Accelerated UV Weathering Data: Perspective From PVQAT Task Group 5 (Presentation)". United States. doi:. https://www.osti.gov/servlets/purl/1172943.
@article{osti_1172943,
title = {Extrapolating Accelerated UV Weathering Data: Perspective From PVQAT Task Group 5 (Presentation)},
author = {Miller, D. and Annigoni, E. and Ballion, A. and Bokria, J. and Bruckman, L. and Burns, D. and Elliott, L. and French, R. and Fowler, S. and Gu, X. and Honeker, C. and Khonkar, H. and Kohl, M. and Krommenhoek, P. and Peret-Aebi, L. and Phillips, N. and Scott, K. and Sculati-Meillaud, F. and Shioda, T.},
abstractNote = {Taskgroup 5 (TG5) is concerned with a accelerated aging standard incorporating factors including ultraviolet radiation, temperature, and moisture. Separate experiments are being conducted in support of a test standard via the regional sub-groups in Asia, Europe, and the United States. The authors will describe the objectives and timeline for the TG5 interlaboratory study being directed out of the USA. Qualitative preliminary data from the experiment is presented. To date, the encapsulation transmittance experiment has: replicated behaviors of fielded materials (including specimen location- and formulation additive-specific discoloration); demonstrated coupling between UV aging and temperature; demonstrated that degradation in EVA results from UV- aging; and obtained good qualitative comparison between Xe and UVA-340 sources for EVA. To date, the encapsulation adhesion experiment (using the compressive shear test to quantify strength of attachment) has demonstrated that attachment strength can decrease drastically (>50%) with age; however, early results suggest significant factor (UV, T, RH) dependence. Much remains to be learned about adhesion.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Feb 01 00:00:00 EST 2015},
month = {Sun Feb 01 00:00:00 EST 2015}
}

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