Effects of weathering on fracture toughness Jc and micromechanical properties of unfilled and short-glass-fiber-filled polyester, Xenoy

J. Karger-Kocsis, Dirk Oschmann, Kiyoshi Takahashi, Jozsef Karger-Kocsis, Klaus Friedrich

Research output: Contribution to journalArticle

Abstract

Influence of weathering on fracture toughness (Jc), microhardness (Hμ) and ultrasonic velocity (Vr) in unfilled and short-glass-fiber-filled polyester, Xenoy, has been investigated. The materials were weathered outdoors in Perth, West Australia. The specimens weathered for 6 months showed a slight increase in Jc as compared with unweathered specimens. Weathering for 11 months caused a large decrease in Jc and a slight increase in yield strength. Fracture surfaces of the specimens, however, exhibited little difference. On the other hand, Hμ measurements revealed a feature consistent with the trend of Jc. Vr decreased considerably in the surface layer weathered for 11 months. Weathering by artificial ultraviolet rays induced a strong increase in Hμ and a small decrease in Vr. Consequently, it was shown that the measurement of Jc in combination with Hμ and Vr is an effective way of studying weathering effects for thermoplastics.

Original languageEnglish
Pages (from-to)272-277
Number of pages6
JournalNippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
Volume61
Issue number582
Publication statusPublished - Feb 1995

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Polyesters
Weathering
Glass fibers
Fracture toughness
Ultrasonic velocity
Microhardness
Thermoplastics
Yield stress
fiberglass

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Effects of weathering on fracture toughness Jc and micromechanical properties of unfilled and short-glass-fiber-filled polyester, Xenoy. / Karger-Kocsis, J.; Oschmann, Dirk; Takahashi, Kiyoshi; Karger-Kocsis, Jozsef; Friedrich, Klaus.

In: Nippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A, Vol. 61, No. 582, 02.1995, p. 272-277.

Research output: Contribution to journalArticle

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