Abstract
The design of high performance aircraft structures frequently includes various shape and size discontinuities for various purposes. The zones near to these notches become critical regions under various working loading. The stress concentration factor (SCF) and tensile strength degradation of poly lactic acid (PLA) plates are addressed in the current study through a combination of experimental and numerical studies using finite element (FE) modeling techniques. The present work performs stress concentration factor (SCF) of rectangular plates with two symmetrical circular holes under uniaxial tension load of two various types (PLA, PLA/15%carbon), which were determined in the current work experimentally and numerically using finite element method with help of Ansys software. The results of experimental test showed decay in tensile modulus and tensile strength is less than that of using plates without holes by (10%, 22.1%) for (PLA, PLA/15%carbon) respectively, and the apparent stress concentration factor is (3.33, 3.61) respectively. And showed decay in tensile strength is less than that of using plates without holes by (28.35%, 27.77%) for (PLA, PLA/15%carbon) respectively, due to the concentration of stresses around the holes. A finite element analysis is carried out and the outcomes have been estimated with experimental results for checking the efficient use of this article. The numerical results show the Von Mises stress distribution and stress concentration factor is (2.16, 2.35) for (PLA, PLA/15%carbon) respectively.
Highlights
In recent times, environmental waste has become a large concern due to the elevated effect of plastic pollution in everyday use
Many recent researches study the effect of cutout on stress concentration factor (SCF) by using finite element analysis (FEA) [8]
Found the values of the mechanical properties of the plates used in the research
Summary
Environmental waste has become a large concern due to the elevated effect of plastic pollution in everyday use. To improve the lower the production cost and various properties, different researches on PLA blends as composite materials [1]. The poly lactic acid is obtained from the natural resources which will reduce carbon foot print Along with this PLA is eco-friendly and is compatible with other resins, fibers and additives. Always the nonbiodegradable composites have more stability and strength, researchers adding various additives, blending resins and fibers which are biodegradable to get the stability and strength on par with non-biodegradable composites. It can be reused and recycled [2]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
