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 language | English |
|---|---|
| Pages (from-to) | 211-216 |
| Number of pages | 6 |
| Journal | Experimental Mechanics |
| Volume | 47 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Apr 1 2007 |
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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 journal › Article
}
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.
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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 -