Viscoelastic Modelling of Creep and Stress Relaxation Behaviour in PLA-PCL Fibres 


Vol. 18,  No. 12, pp. 2443-2453, Dec.  2017


PDF
  Abstract

In case of high performance athletes, ligaments are the most commonly injured tissues. Current gold standard process for replacement of ligament is autografting. Research in the field of biodegradable polymers (as a possible ligament device) has helped in overcoming the various drawbacks of autografting. Biodegradable blend of polylactic acid and polycaprolactone (PLA-PCL) have been proposed for use in a medical device to repair injured ligaments. By using a mathematical model, this study aims to characterise the non-linear viscoelastic properties of PLA-PCL fibres. In the present study, two modified models were used; the Burger셲 model and three-element standard solid model. The model parameters were calibrated by using the tensile and creep experimental data. In case of Burger셲 model, the parameters were significantly affected by the stress level. This functional stress dependency was represented by a second degree polynomial. By employing the previously computed parameters, the stress relaxation data of PLA-PCL fibres was used to check the model simulations. Only the predictions generated from the modified three-element standard solid model were found to be in an agreement with the experimental data. This model enables representing the general viscoelastic response of PLA-PCL fibres through a unique set of parameters.

  Statistics
Cumulative Counts from November, 2022
Multiple requests among the same browser session are counted as one view. If you mouse over a chart, the values of data points will be shown.


  Cite this article

[IEEE Style]

R. M. Guedes, A. Singh, V. Pinto, "Viscoelastic Modelling of Creep and Stress Relaxation Behaviour in PLA-PCL Fibres," Fibers and Polymers, vol. 18, no. 12, pp. 2443-2453, 2017. DOI: fipo-2017-18-12-2443.

[ACM Style]

Rui Miranda Guedes, Anurag Singh, and Viviana Pinto. 2017. Viscoelastic Modelling of Creep and Stress Relaxation Behaviour in PLA-PCL Fibres. Fibers and Polymers, 18, 12, (2017), 2443-2453. DOI: fipo-2017-18-12-2443.

Search
(IN TITLE, AUTHOR, ABSTRACT,KEYWORDS)

Advanced Search ▼

POPULAR KEYWORDS
(TOP 10 KEYWORDS)

Recent Publications
(LAST 3 YEARS)

pISSN : 1229 - 9197
eISSN : 1875 - 0052

Impact Factor(2022): 2.5