Examination of a size-change test for photovoltaic encapsulation materials

David C. Miller, Xiaohong Gu, Liang Ji, George Kelly, Nichole Nickel, Paul Norum, Tsuyoshi Shioda, Govindasamy Tamizhmani, John H. Wohlgemuth

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We examine a proposed test standard that can be used to evaluate the maximum representative change in linear dimensions of sheet encapsulation products for photovoltaic modules (resulting from their thermal processing). The proposed protocol is part of a series of material-level tests being developed within Working Group 2 of the Technical Committee 82 of the International Electrotechnical Commission. The characterization tests are being developed to aid module design (by identifying the essential characteristics that should be communicated on a datasheet), quality control (via internal material acceptance and process control), and failure analysis. Discovery and interlaboratory experiments were used to select particular parameters for the size-change test. The choice of a sand substrate and aluminum carrier is explored relative to other options. The temperature uniformity of ?5?C for the substrate was confirmed using thermography. Considerations related to the heating device (hot-plate or oven) are explored. The time duration of 5 minutes was identified from the time-series photographic characterization of material specimens (EVA, ionomer, PVB, TPO, and TPU). The test procedure was revised to account for observed effects of size and edges. The interlaboratory study identified typical size-change characteristics, and also verified the absolute reproducibility of ?5% between laboratories.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume8472
DOIs
StatePublished - 2012
Externally publishedYes
EventReliability of Photovoltaic Cells, Modules, Components, and Systems V - San Diego, CA, United States
Duration: Aug 13 2012Aug 16 2012

Other

OtherReliability of Photovoltaic Cells, Modules, Components, and Systems V
CountryUnited States
CitySan Diego, CA
Period8/13/128/16/12

Fingerprint

Encapsulation
examination
Ionomers
Ovens
Substrates
Aluminum
modules
Failure analysis
Process control
Quality control
Substrate
Time series
extravehicular activity
Sand
Module
Failure Analysis
failure analysis
ovens
Reproducibility
Heating

Keywords

  • Material characteristics
  • Polymer
  • Quality assurance
  • Shrinkage

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Miller, D. C., Gu, X., Ji, L., Kelly, G., Nickel, N., Norum, P., ... Wohlgemuth, J. H. (2012). Examination of a size-change test for photovoltaic encapsulation materials. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 8472). [84720T] https://doi.org/10.1117/12.929796

Examination of a size-change test for photovoltaic encapsulation materials. / Miller, David C.; Gu, Xiaohong; Ji, Liang; Kelly, George; Nickel, Nichole; Norum, Paul; Shioda, Tsuyoshi; Tamizhmani, Govindasamy; Wohlgemuth, John H.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8472 2012. 84720T.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Miller, DC, Gu, X, Ji, L, Kelly, G, Nickel, N, Norum, P, Shioda, T, Tamizhmani, G & Wohlgemuth, JH 2012, Examination of a size-change test for photovoltaic encapsulation materials. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 8472, 84720T, Reliability of Photovoltaic Cells, Modules, Components, and Systems V, San Diego, CA, United States, 8/13/12. https://doi.org/10.1117/12.929796
Miller DC, Gu X, Ji L, Kelly G, Nickel N, Norum P et al. Examination of a size-change test for photovoltaic encapsulation materials. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8472. 2012. 84720T https://doi.org/10.1117/12.929796
Miller, David C. ; Gu, Xiaohong ; Ji, Liang ; Kelly, George ; Nickel, Nichole ; Norum, Paul ; Shioda, Tsuyoshi ; Tamizhmani, Govindasamy ; Wohlgemuth, John H. / Examination of a size-change test for photovoltaic encapsulation materials. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8472 2012.
@inproceedings{adcfcb21a61140e89ac6b2feca496821,
title = "Examination of a size-change test for photovoltaic encapsulation materials",
abstract = "We examine a proposed test standard that can be used to evaluate the maximum representative change in linear dimensions of sheet encapsulation products for photovoltaic modules (resulting from their thermal processing). The proposed protocol is part of a series of material-level tests being developed within Working Group 2 of the Technical Committee 82 of the International Electrotechnical Commission. The characterization tests are being developed to aid module design (by identifying the essential characteristics that should be communicated on a datasheet), quality control (via internal material acceptance and process control), and failure analysis. Discovery and interlaboratory experiments were used to select particular parameters for the size-change test. The choice of a sand substrate and aluminum carrier is explored relative to other options. The temperature uniformity of ?5?C for the substrate was confirmed using thermography. Considerations related to the heating device (hot-plate or oven) are explored. The time duration of 5 minutes was identified from the time-series photographic characterization of material specimens (EVA, ionomer, PVB, TPO, and TPU). The test procedure was revised to account for observed effects of size and edges. The interlaboratory study identified typical size-change characteristics, and also verified the absolute reproducibility of ?5{\%} between laboratories.",
keywords = "Material characteristics, Polymer, Quality assurance, Shrinkage",
author = "Miller, {David C.} and Xiaohong Gu and Liang Ji and George Kelly and Nichole Nickel and Paul Norum and Tsuyoshi Shioda and Govindasamy Tamizhmani and Wohlgemuth, {John H.}",
year = "2012",
doi = "10.1117/12.929796",
language = "English (US)",
isbn = "9780819491893",
volume = "8472",
booktitle = "Proceedings of SPIE - The International Society for Optical Engineering",

}

TY - GEN

T1 - Examination of a size-change test for photovoltaic encapsulation materials

AU - Miller, David C.

AU - Gu, Xiaohong

AU - Ji, Liang

AU - Kelly, George

AU - Nickel, Nichole

AU - Norum, Paul

AU - Shioda, Tsuyoshi

AU - Tamizhmani, Govindasamy

AU - Wohlgemuth, John H.

PY - 2012

Y1 - 2012

N2 - We examine a proposed test standard that can be used to evaluate the maximum representative change in linear dimensions of sheet encapsulation products for photovoltaic modules (resulting from their thermal processing). The proposed protocol is part of a series of material-level tests being developed within Working Group 2 of the Technical Committee 82 of the International Electrotechnical Commission. The characterization tests are being developed to aid module design (by identifying the essential characteristics that should be communicated on a datasheet), quality control (via internal material acceptance and process control), and failure analysis. Discovery and interlaboratory experiments were used to select particular parameters for the size-change test. The choice of a sand substrate and aluminum carrier is explored relative to other options. The temperature uniformity of ?5?C for the substrate was confirmed using thermography. Considerations related to the heating device (hot-plate or oven) are explored. The time duration of 5 minutes was identified from the time-series photographic characterization of material specimens (EVA, ionomer, PVB, TPO, and TPU). The test procedure was revised to account for observed effects of size and edges. The interlaboratory study identified typical size-change characteristics, and also verified the absolute reproducibility of ?5% between laboratories.

AB - We examine a proposed test standard that can be used to evaluate the maximum representative change in linear dimensions of sheet encapsulation products for photovoltaic modules (resulting from their thermal processing). The proposed protocol is part of a series of material-level tests being developed within Working Group 2 of the Technical Committee 82 of the International Electrotechnical Commission. The characterization tests are being developed to aid module design (by identifying the essential characteristics that should be communicated on a datasheet), quality control (via internal material acceptance and process control), and failure analysis. Discovery and interlaboratory experiments were used to select particular parameters for the size-change test. The choice of a sand substrate and aluminum carrier is explored relative to other options. The temperature uniformity of ?5?C for the substrate was confirmed using thermography. Considerations related to the heating device (hot-plate or oven) are explored. The time duration of 5 minutes was identified from the time-series photographic characterization of material specimens (EVA, ionomer, PVB, TPO, and TPU). The test procedure was revised to account for observed effects of size and edges. The interlaboratory study identified typical size-change characteristics, and also verified the absolute reproducibility of ?5% between laboratories.

KW - Material characteristics

KW - Polymer

KW - Quality assurance

KW - Shrinkage

UR - http://www.scopus.com/inward/record.url?scp=84872117225&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84872117225&partnerID=8YFLogxK

U2 - 10.1117/12.929796

DO - 10.1117/12.929796

M3 - Conference contribution

AN - SCOPUS:84872117225

SN - 9780819491893

VL - 8472

BT - Proceedings of SPIE - The International Society for Optical Engineering

ER -