Effects of specimen configuration on tensile fracture mechanism of unidirectional CFRP

Heru S B Rochardjo, Jun Komotori, Masao Shimizu, Yasushi Miyano

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Monotonic tensile tests were carried out on unidirectional CFRP to clarify the effects of specimen configuration on fracture mode and tensile strength. Three types of specimen configuration, a standard specimen according to JIS, necked-on-width specimen and necked-on-thickness specimen having various thicknesses of the necked region, were used. The following results were obtained. (i) A transition in fracture mode from tensile failure at the necked region (fracture mode type A) to interlaminar shear failure spreading to the outside of the necked region before final fracture (fracture mode type B) was observed in the necked-on thickness specimen as the thickness ratio of necked and un-necked regions increased. Fracture mode type A occurred when the ratio was low because the tensile failure load was lower than the shear failure load, and high thickness ratio resulted in fracture mode type B due to increasing tensile failure load over that of the shear. (ii) The specimen which fractured with shear failure exhibited lower tensile strength than the specimen which fractured in the tensile mode at the necked region.

Original languageEnglish
Pages (from-to)313-318
Number of pages6
JournalNippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
Volume61
Issue number582
Publication statusPublished - 1995 Feb
Externally publishedYes

Fingerprint

Carbon fiber reinforced plastics
Tensile strength
carbon fiber reinforced plastic

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Effects of specimen configuration on tensile fracture mechanism of unidirectional CFRP. / Rochardjo, Heru S B; Komotori, Jun; Shimizu, Masao; Miyano, Yasushi.

In: Nippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A, Vol. 61, No. 582, 02.1995, p. 313-318.

Research output: Contribution to journalArticle

@article{1ceb06bc1b2d463c824d0e9fc4850510,
title = "Effects of specimen configuration on tensile fracture mechanism of unidirectional CFRP",
abstract = "Monotonic tensile tests were carried out on unidirectional CFRP to clarify the effects of specimen configuration on fracture mode and tensile strength. Three types of specimen configuration, a standard specimen according to JIS, necked-on-width specimen and necked-on-thickness specimen having various thicknesses of the necked region, were used. The following results were obtained. (i) A transition in fracture mode from tensile failure at the necked region (fracture mode type A) to interlaminar shear failure spreading to the outside of the necked region before final fracture (fracture mode type B) was observed in the necked-on thickness specimen as the thickness ratio of necked and un-necked regions increased. Fracture mode type A occurred when the ratio was low because the tensile failure load was lower than the shear failure load, and high thickness ratio resulted in fracture mode type B due to increasing tensile failure load over that of the shear. (ii) The specimen which fractured with shear failure exhibited lower tensile strength than the specimen which fractured in the tensile mode at the necked region.",
author = "Rochardjo, {Heru S B} and Jun Komotori and Masao Shimizu and Yasushi Miyano",
year = "1995",
month = "2",
language = "English",
volume = "61",
pages = "313--318",
journal = "Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A",
issn = "0387-5008",
publisher = "Japan Society of Mechanical Engineers",
number = "582",

}

TY - JOUR

T1 - Effects of specimen configuration on tensile fracture mechanism of unidirectional CFRP

AU - Rochardjo, Heru S B

AU - Komotori, Jun

AU - Shimizu, Masao

AU - Miyano, Yasushi

PY - 1995/2

Y1 - 1995/2

N2 - Monotonic tensile tests were carried out on unidirectional CFRP to clarify the effects of specimen configuration on fracture mode and tensile strength. Three types of specimen configuration, a standard specimen according to JIS, necked-on-width specimen and necked-on-thickness specimen having various thicknesses of the necked region, were used. The following results were obtained. (i) A transition in fracture mode from tensile failure at the necked region (fracture mode type A) to interlaminar shear failure spreading to the outside of the necked region before final fracture (fracture mode type B) was observed in the necked-on thickness specimen as the thickness ratio of necked and un-necked regions increased. Fracture mode type A occurred when the ratio was low because the tensile failure load was lower than the shear failure load, and high thickness ratio resulted in fracture mode type B due to increasing tensile failure load over that of the shear. (ii) The specimen which fractured with shear failure exhibited lower tensile strength than the specimen which fractured in the tensile mode at the necked region.

AB - Monotonic tensile tests were carried out on unidirectional CFRP to clarify the effects of specimen configuration on fracture mode and tensile strength. Three types of specimen configuration, a standard specimen according to JIS, necked-on-width specimen and necked-on-thickness specimen having various thicknesses of the necked region, were used. The following results were obtained. (i) A transition in fracture mode from tensile failure at the necked region (fracture mode type A) to interlaminar shear failure spreading to the outside of the necked region before final fracture (fracture mode type B) was observed in the necked-on thickness specimen as the thickness ratio of necked and un-necked regions increased. Fracture mode type A occurred when the ratio was low because the tensile failure load was lower than the shear failure load, and high thickness ratio resulted in fracture mode type B due to increasing tensile failure load over that of the shear. (ii) The specimen which fractured with shear failure exhibited lower tensile strength than the specimen which fractured in the tensile mode at the necked region.

UR - http://www.scopus.com/inward/record.url?scp=0029253867&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0029253867&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0029253867

VL - 61

SP - 313

EP - 318

JO - Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A

JF - Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A

SN - 0387-5008

IS - 582

ER -