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Paper Information

Journal:   IRANIAN JOURNAL OF WOOD AND PAPER INDUSTRIES   fall 2018 , Volume 9 , Number 3 ; Page(s) 429 To 440.
 
Paper: 

Determination of elastic modulus of a natural fiber-thermoplastic composite

 
 
Author(s):  Dastoorian F.*
 
* Sari agricultural sciences and natural resources university, Sari, Iran
 
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.
 
Keyword(s): elastic modulus,ultrasonic test,loadingunloading test,tangent modulus
 
 
References: 
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Citations: 
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+ Click to Cite.
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. https://www.sid.ir/en/journal/ViewPaper.aspx?id=731211



Vancouver: Copy

DASTOORIAN F.. Determination of elastic modulus of a natural fiber-thermoplastic composite. IRANIAN JOURNAL OF WOOD AND PAPER INDUSTRIES. 2018 [cited 2021October25];9(3 ):429-440. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=731211



IEEE: Copy

DASTOORIAN, F., 2018. Determination of elastic modulus of a natural fiber-thermoplastic composite. IRANIAN JOURNAL OF WOOD AND PAPER INDUSTRIES, [online] 9(3 ), pp.429-440. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=731211.



 
 
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