Measuring fracture energy in a brittle polymeric material

Application of a high-speed optical extensometer

Kazuo Arakawa, T. Mada

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The brittle fracture of polymethyl methacrylate (PMMA) was studied using a high-speed extensometer, which consisted of an optical fiber and a position-sensing detector (PSD). Single-edge-cracked tensile specimens were pin-loaded with a special jig so that they could split and fly in the loading direction after fracture. The flying height and residual deformation of the split specimen were measured to estimate the elastic energy E e and non-elastic energy E n, respectively. By subtracting E e and E n from the external work U ex applied to the specimen, the fracture energy E f for creating a new fracture surface was evaluated. The results showed that E e, E n, and E f increased with U ex, and the ratio E f/U ex was about 45% over a wide range of U ex. Energy release rate was also estimated using U ex or E f, and the results suggested that it was overestimated if E e and E n were included.

Original languageEnglish
Pages (from-to)211-216
Number of pages6
JournalExperimental Mechanics
Volume47
Issue number2
DOIs
Publication statusPublished - Apr 1 2007

Fingerprint

Dilatometers
Fracture energy
Jigs
Energy release rate
Brittle fracture
Polymers
Polymethyl methacrylates
Optical fibers
Detectors

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Measuring fracture energy in a brittle polymeric material : Application of a high-speed optical extensometer. / Arakawa, Kazuo; Mada, T.

In: Experimental Mechanics, Vol. 47, No. 2, 01.04.2007, p. 211-216.

Research output: Contribution to journalArticle

@article{8c5d61bcbf4a4c1b8204581a71a7ad39,
title = "Measuring fracture energy in a brittle polymeric material: Application of a high-speed optical extensometer",
abstract = "The brittle fracture of polymethyl methacrylate (PMMA) was studied using a high-speed extensometer, which consisted of an optical fiber and a position-sensing detector (PSD). Single-edge-cracked tensile specimens were pin-loaded with a special jig so that they could split and fly in the loading direction after fracture. The flying height and residual deformation of the split specimen were measured to estimate the elastic energy E e and non-elastic energy E n, respectively. By subtracting E e and E n from the external work U ex applied to the specimen, the fracture energy E f for creating a new fracture surface was evaluated. The results showed that E e, E n, and E f increased with U ex, and the ratio E f/U ex was about 45{\%} over a wide range of U ex. Energy release rate was also estimated using U ex or E f, and the results suggested that it was overestimated if E e and E n were included.",
author = "Kazuo Arakawa and T. Mada",
year = "2007",
month = "4",
day = "1",
doi = "10.1007/s11340-006-9000-1",
language = "English",
volume = "47",
pages = "211--216",
journal = "Experimental Mechanics",
issn = "0014-4851",
publisher = "Springer New York",
number = "2",

}

TY - JOUR

T1 - Measuring fracture energy in a brittle polymeric material

T2 - Application of a high-speed optical extensometer

AU - Arakawa, Kazuo

AU - Mada, T.

PY - 2007/4/1

Y1 - 2007/4/1

N2 - The brittle fracture of polymethyl methacrylate (PMMA) was studied using a high-speed extensometer, which consisted of an optical fiber and a position-sensing detector (PSD). Single-edge-cracked tensile specimens were pin-loaded with a special jig so that they could split and fly in the loading direction after fracture. The flying height and residual deformation of the split specimen were measured to estimate the elastic energy E e and non-elastic energy E n, respectively. By subtracting E e and E n from the external work U ex applied to the specimen, the fracture energy E f for creating a new fracture surface was evaluated. The results showed that E e, E n, and E f increased with U ex, and the ratio E f/U ex was about 45% over a wide range of U ex. Energy release rate was also estimated using U ex or E f, and the results suggested that it was overestimated if E e and E n were included.

AB - The brittle fracture of polymethyl methacrylate (PMMA) was studied using a high-speed extensometer, which consisted of an optical fiber and a position-sensing detector (PSD). Single-edge-cracked tensile specimens were pin-loaded with a special jig so that they could split and fly in the loading direction after fracture. The flying height and residual deformation of the split specimen were measured to estimate the elastic energy E e and non-elastic energy E n, respectively. By subtracting E e and E n from the external work U ex applied to the specimen, the fracture energy E f for creating a new fracture surface was evaluated. The results showed that E e, E n, and E f increased with U ex, and the ratio E f/U ex was about 45% over a wide range of U ex. Energy release rate was also estimated using U ex or E f, and the results suggested that it was overestimated if E e and E n were included.

UR - http://www.scopus.com/inward/record.url?scp=33847702170&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33847702170&partnerID=8YFLogxK

U2 - 10.1007/s11340-006-9000-1

DO - 10.1007/s11340-006-9000-1

M3 - Article

VL - 47

SP - 211

EP - 216

JO - Experimental Mechanics

JF - Experimental Mechanics

SN - 0014-4851

IS - 2

ER -