Modeling the lifetime of printed silver conductors in cyclic bending with the Coffin-Manson relation

Tuomas Happonen, Tapio Ritvonen, Pentti Korhonen, Juha Häkkinen, Tapio E. J. Fabritius

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Abstract

This paper discusses the modeling of the lifetime of printed conductors on a flexible substrate under cyclic bending. Roll-to-roll printed silver lines on a plastic film were exposed to cyclic strains accordant to the bending radii of 15, 20, and 30 mm, and their long-term electrical behavior was monitored in situ with four-point dc resistance measurements. By using 5%, 10%, and 20% increase in resistance as failure criteria, the lifetime of test populations was assessed utilizing the Weibull reliability analysis. Based on these results, the relationship between the applied strain and the lifetime was characterized and modeled by the Coffin-Manson equation. The Coffin-Manson relation accordant behavior for the lifetimes under various strains was also verified by confirming measurements with untapped bending radii with good results. As a conclusion, the lifetime of a printed conductor with known geometry and materials under cyclic bending was able to be modeled as a function of bending radius with the Coffin-Manson relation.
Original languageEnglish
Pages (from-to)25-29
JournalIEEE Transactions on Device and Materials Reliability
Volume16
Issue number1
DOIs
Publication statusPublished - 2016
MoE publication typeA1 Journal article-refereed

Fingerprint

Silver
Plastic films
Reliability analysis
Geometry
Substrates

Keywords

  • bending
  • Coffin-Manson relation
  • fatigue life
  • flexible substrate
  • roll-to-roll printing
  • silver conductor
  • strain

Cite this

@article{bf9549d882c64a16b8292630a2bb9794,
title = "Modeling the lifetime of printed silver conductors in cyclic bending with the Coffin-Manson relation",
abstract = "This paper discusses the modeling of the lifetime of printed conductors on a flexible substrate under cyclic bending. Roll-to-roll printed silver lines on a plastic film were exposed to cyclic strains accordant to the bending radii of 15, 20, and 30 mm, and their long-term electrical behavior was monitored in situ with four-point dc resistance measurements. By using 5{\%}, 10{\%}, and 20{\%} increase in resistance as failure criteria, the lifetime of test populations was assessed utilizing the Weibull reliability analysis. Based on these results, the relationship between the applied strain and the lifetime was characterized and modeled by the Coffin-Manson equation. The Coffin-Manson relation accordant behavior for the lifetimes under various strains was also verified by confirming measurements with untapped bending radii with good results. As a conclusion, the lifetime of a printed conductor with known geometry and materials under cyclic bending was able to be modeled as a function of bending radius with the Coffin-Manson relation.",
keywords = "bending, Coffin-Manson relation, fatigue life, flexible substrate, roll-to-roll printing, silver conductor, strain",
author = "Tuomas Happonen and Tapio Ritvonen and Pentti Korhonen and Juha H{\"a}kkinen and Fabritius, {Tapio E. J.}",
year = "2016",
doi = "10.1109/TDMR.2015.2507619",
language = "English",
volume = "16",
pages = "25--29",
journal = "IEEE Transactions on Device and Materials Reliability",
issn = "1530-4388",
publisher = "Institute of Electrical and Electronic Engineers IEEE",
number = "1",

}

Modeling the lifetime of printed silver conductors in cyclic bending with the Coffin-Manson relation. / Happonen, Tuomas; Ritvonen, Tapio; Korhonen, Pentti; Häkkinen, Juha; Fabritius, Tapio E. J.

In: IEEE Transactions on Device and Materials Reliability, Vol. 16, No. 1, 2016, p. 25-29.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Modeling the lifetime of printed silver conductors in cyclic bending with the Coffin-Manson relation

AU - Happonen, Tuomas

AU - Ritvonen, Tapio

AU - Korhonen, Pentti

AU - Häkkinen, Juha

AU - Fabritius, Tapio E. J.

PY - 2016

Y1 - 2016

N2 - This paper discusses the modeling of the lifetime of printed conductors on a flexible substrate under cyclic bending. Roll-to-roll printed silver lines on a plastic film were exposed to cyclic strains accordant to the bending radii of 15, 20, and 30 mm, and their long-term electrical behavior was monitored in situ with four-point dc resistance measurements. By using 5%, 10%, and 20% increase in resistance as failure criteria, the lifetime of test populations was assessed utilizing the Weibull reliability analysis. Based on these results, the relationship between the applied strain and the lifetime was characterized and modeled by the Coffin-Manson equation. The Coffin-Manson relation accordant behavior for the lifetimes under various strains was also verified by confirming measurements with untapped bending radii with good results. As a conclusion, the lifetime of a printed conductor with known geometry and materials under cyclic bending was able to be modeled as a function of bending radius with the Coffin-Manson relation.

AB - This paper discusses the modeling of the lifetime of printed conductors on a flexible substrate under cyclic bending. Roll-to-roll printed silver lines on a plastic film were exposed to cyclic strains accordant to the bending radii of 15, 20, and 30 mm, and their long-term electrical behavior was monitored in situ with four-point dc resistance measurements. By using 5%, 10%, and 20% increase in resistance as failure criteria, the lifetime of test populations was assessed utilizing the Weibull reliability analysis. Based on these results, the relationship between the applied strain and the lifetime was characterized and modeled by the Coffin-Manson equation. The Coffin-Manson relation accordant behavior for the lifetimes under various strains was also verified by confirming measurements with untapped bending radii with good results. As a conclusion, the lifetime of a printed conductor with known geometry and materials under cyclic bending was able to be modeled as a function of bending radius with the Coffin-Manson relation.

KW - bending

KW - Coffin-Manson relation

KW - fatigue life

KW - flexible substrate

KW - roll-to-roll printing

KW - silver conductor

KW - strain

U2 - 10.1109/TDMR.2015.2507619

DO - 10.1109/TDMR.2015.2507619

M3 - Article

VL - 16

SP - 25

EP - 29

JO - IEEE Transactions on Device and Materials Reliability

JF - IEEE Transactions on Device and Materials Reliability

SN - 1530-4388

IS - 1

ER -