Abstract
Indentation tests are performed to evaluate the viscoelastic characteristics of a short-fiber reinforced composite. Finite element analysis is also carried out to estimate the macroscopic viscoelastic characteristics of the composite by using a unit cell models. The results of indentation tests show that a force-displacement curve obtained by the indentation test depends on the area of the fibers appeared in the impression. The creep compliance evaluated by these indentation tests is compared to that by the finite element analysis. As the results, it is suggested that the result of indentation test performed on the surface of the composite without fibers means the measurement result for isotropic composite or anisotropic composite in the direction of the smallest rigidity. On the other hand, indentation test performed on the fiber indicates the measurement result of anisotropic composite in the direction of the largest rigidity. These results present the method to measure the macroscopic characteristics of short-fiber reinforced composite by indentation tests.
| Original language | English |
|---|---|
| Pages (from-to) | 1003-1008 |
| Number of pages | 6 |
| Journal | Experimental Mechanics |
| Volume | 52 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 2012 Oct |
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Keywords
- Creep compliance
- Finite element analysis
- Indentation test
- Short fiber reinforced composite
- Viscoelasticity
ASJC Scopus subject areas
- Mechanical Engineering
- Mechanics of Materials
- Aerospace Engineering
Cite this
Evaluation of Viscoelastic Characteristics of Short-fiber Reinforced Composite by Indentation Method. / Sakaue, Kenichi; Isawa, T.; Ogawa, T.; Yoshimoto, T.
In: Experimental Mechanics, Vol. 52, No. 8, 10.2012, p. 1003-1008.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Evaluation of Viscoelastic Characteristics of Short-fiber Reinforced Composite by Indentation Method
AU - Sakaue, Kenichi
AU - Isawa, T.
AU - Ogawa, T.
AU - Yoshimoto, T.
PY - 2012/10
Y1 - 2012/10
N2 - Indentation tests are performed to evaluate the viscoelastic characteristics of a short-fiber reinforced composite. Finite element analysis is also carried out to estimate the macroscopic viscoelastic characteristics of the composite by using a unit cell models. The results of indentation tests show that a force-displacement curve obtained by the indentation test depends on the area of the fibers appeared in the impression. The creep compliance evaluated by these indentation tests is compared to that by the finite element analysis. As the results, it is suggested that the result of indentation test performed on the surface of the composite without fibers means the measurement result for isotropic composite or anisotropic composite in the direction of the smallest rigidity. On the other hand, indentation test performed on the fiber indicates the measurement result of anisotropic composite in the direction of the largest rigidity. These results present the method to measure the macroscopic characteristics of short-fiber reinforced composite by indentation tests.
AB - Indentation tests are performed to evaluate the viscoelastic characteristics of a short-fiber reinforced composite. Finite element analysis is also carried out to estimate the macroscopic viscoelastic characteristics of the composite by using a unit cell models. The results of indentation tests show that a force-displacement curve obtained by the indentation test depends on the area of the fibers appeared in the impression. The creep compliance evaluated by these indentation tests is compared to that by the finite element analysis. As the results, it is suggested that the result of indentation test performed on the surface of the composite without fibers means the measurement result for isotropic composite or anisotropic composite in the direction of the smallest rigidity. On the other hand, indentation test performed on the fiber indicates the measurement result of anisotropic composite in the direction of the largest rigidity. These results present the method to measure the macroscopic characteristics of short-fiber reinforced composite by indentation tests.
KW - Creep compliance
KW - Finite element analysis
KW - Indentation test
KW - Short fiber reinforced composite
KW - Viscoelasticity
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U2 - 10.1007/s11340-011-9551-7
DO - 10.1007/s11340-011-9551-7
M3 - Article
VL - 52
SP - 1003
EP - 1008
JO - Experimental Mechanics
JF - Experimental Mechanics
SN - 0014-4851
IS - 8
ER -