Determination of elastic modulus of a natural fiber-thermoplastic composite

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DASTOORIAN F.

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Paper Information

Journal: IRANIAN JOURNAL OF WOOD AND PAPER INDUSTRIES Year:2018 | Volume:9 | Issue:3 Page(s): 429-440

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Title

Determination of elastic modulus of a natural fiber-thermoplastic composite

Author(s)

DASTOORIAN F. | Issue Writer Certificate

Keywords

elastic modulusQ2

ultrasonic testQ1

loadingunloading testQ1

tangent modulusQ1

Abstract

In order to use the design softwares for natural fibersthermoplastic composites in structural applications, precise determination of elastic parameters is of importance. Regarding the viscoelastic properties of these materials and their nonlinear stress-strain curves, even at low loading levels, determination of precise elastic parameters by common static tests is not simple. In the present study, methods of loadingunloading test was used to determine the elastic modulus of a natural fiber-thermoplastic composite and the results were compared with the tangent modulus obtained from static compression test. Dynamic modulus was also obtained from ultrasonic test, and a regression relationship was proposed between dynamic modulus and the static one. Results showed that the composite had orthotropic nature and the dynamic modulus from ultrasonic test showed higher values compared with the two others. Also, with increasing modulus resulted from unloading test, the difference between dynamic and unloading modulus decreased linearly. Results also showed that using prevalent method of modulus determination for this material (i. e. tangent modulus at 10-40% of ultimate stress) leads to the elastic modulus estimated much lower than the real value.

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APA: Copy

DASTOORIAN, F.. (2018). Determination of elastic modulus of a natural fiber-thermoplastic composite. IRANIAN JOURNAL OF WOOD AND PAPER INDUSTRIES, 9(3 ), 429-440. SID. https://sid.ir/paper/184260/en

Vancouver: Copy

DASTOORIAN F.. Determination of elastic modulus of a natural fiber-thermoplastic composite. IRANIAN JOURNAL OF WOOD AND PAPER INDUSTRIES[Internet]. 2018;9(3 ):429-440. Available from: https://sid.ir/paper/184260/en

IEEE: Copy

F. DASTOORIAN, “Determination of elastic modulus of a natural fiber-thermoplastic composite,” IRANIAN JOURNAL OF WOOD AND PAPER INDUSTRIES, vol. 9, no. 3 , pp. 429–440, 2018, [Online]. Available: https://sid.ir/paper/184260/en

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