In-plane fracture toughness testing of paper using thermography

Atsushi Tanaka, Yuichi Otsuka, Tatsuo Yamauchi

Research output: Contribution to journalArticleScientificpeer-review

21 Citations (Scopus)

Abstract

The temperature distribution of a paper sheet during fracture toughness testing was successively observed as a series of color images by means of an infrared thermography system with close-up lens. No stress concentration accompanied by plastic deformation occurs within the deep double-edge notched tension specimen except around notch tips. A uniformly and plastically deformed region develops from notch tips at the second half of the testing period and becomes a circular plastically deformed region on the ligament just before final sheet failure, irrespective of beating degree.A stable crack has started to grow from notch tips at latest at the point of maximum load.
Original languageEnglish
Pages (from-to)222-226
JournalTappi Journal
Volume80
Issue number5
Publication statusPublished - May 1997
MoE publication typeA1 Journal article-refereed

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