scholarly journals Structural evaluation of a composite centrifugal rotor

2020 ◽  
Vol XXIII (1) ◽  
pp. 29-33
Author(s):  
Sorin Draghici
Keyword(s):  
Polymer Matrix ◽  
Structural Integrity ◽  
Polymer Matrix Composites ◽  
Low Cost ◽  
Turbine Rotor ◽  
Resin Matrix ◽  
Steady Increase ◽  
Matrix Composites ◽  
Polymer Resin ◽  
Structural Evaluation

The steady increase in the use of composites has brought benefits in many areas. Polymer Matrix Composite (PMC) is a material consisting polymer (resin) matrix combined with a fibrous reinforcing dispersed phase. Polymer Matrix Composites are very popular due to their low cost and simple fabrication methods. This paper aims to validate thru finite element method the structural integrity of a composite gas turbine rotor and establish its benefits and disadvantages compared to a steel alternative. Composites provide the advantages of lower weight, greater strength and higher stiffness and the advantage of prepreg technology.

Experimental Investigation of Polymer Matrix Composites Gears with Different Fiber Proportions

2020 ◽  
Vol 12 (2) ◽  
Author(s):  
K. Senthilnathan ◽  
G. Suresh ◽  
T. Srinivasan ◽  
S. Ilaiyavel ◽  
Rajesh Ravi ◽  
...  
Keyword(s):  
Polymer Matrix ◽  
Power Transmission ◽  
Polymer Matrix Composites ◽  
Low Cost ◽  
Polymeric Materials ◽  
Wear Testing ◽  
Gear Pump ◽  
Light Weight ◽  
Matrix Composites ◽  
Essential Components

Nowadays many of the conventional materials are effectively replaced by composite materials, because of their light weight to stiffness ratio. Gears are the very essential components in mechanical power transmission, and drive in the most industrial rotating machinery. Polymer gears are used in motion and power transmission under different loads and speeds. Gears are generally made from metallic materials but recently advanced polymeric materials were developed because of low cost, light weight, high strength and improved performance of the system. Nylon, polymers, acetal and derlin are the structural polymeric materials used in printing and robotics, mechanical machines such as washing machines, sugarcane crushing machine and gear pump that are used for power and speed transmission. The paper investigates the polymer matrix composites gear with different fiber proportions. The main objective is to make glass fiber reinforced polymer gears using epoxy resin with various proportions of E-glass CSM (5%, 10%, 15%, 20%). The work investigates the wear testing of polymer gears of different proportions with metal gear using gear testing rig. The paper focused on morphology of fractured surfaces of polymer gears using scanning electron microscope. Finally, the gear is modeled in Catia software and imported to Ansys for static structural application.

Effective Utilization of Industrial Wastes for Preparing Polymer Matrix Composites

2019 ◽  
pp. 250-261
Author(s):  
Veerasimman Arumugaprabu ◽  
Deepak Joel Johnson R. ◽  
Pragatheeswaran R.
Keyword(s):  
Polymer Matrix ◽  
Polymer Matrix Composites ◽  
Low Cost ◽  
Critical Factor ◽  
Green Manufacturing ◽  
High Strength ◽  
Industrial Wastes ◽  
Matrix Composites ◽  
Effective Utilization ◽  
Composite Product

The present industry scenario focuses on green manufacturing, in terms of effective reuse and recycling of the industrial wastes generated in enormous amount while preparing the product. The wastes also act as a threat to the society by causing various kinds of pollution. Therefore, the proper safe disposal of the same is a very critical factor. Most of the industries struggled with the enormous disposal of these wastes and finding ways for reuse and disposal. In this chapter, one such way of reuse of these wastes for making composite product is explored. Industrial wastes such as flyash and ricehusk used as fillers of varying weight percentages, 6%, 8%, 30%, 40%, and 50%, wt%, respectively, are reinforced with matrix. The prepared composites were subjected to flexural studies to know the load withstand ability. Results show that the incorporation of both fly ash and rice husk industrial wastes as filler into the polymer matrix increases the flexural strength. In addition, a low-cost product with high strength and good performance is obtained by adding this waste.

Computational Micromechanics for High-Temperature Constitutive Equations of Polymer-Matrix Composites With Oxidation Reaction, Damage, and Degradation

2005 ◽  
Vol 128 (1) ◽  
pp. 81-89 ◽  
Author(s):  
Su Su Wang ◽  
Xiaohong Chen
Keyword(s):  
High Temperature ◽  
Polymer Matrix ◽  
Oxidation Reaction ◽  
High Speed ◽  
Structural Integrity ◽  
Polymer Matrix Composites ◽  
Homogenization Theory ◽  
Matrix Composites ◽  
Constitutive Properties ◽  
Computational Micromechanics

The proper determination of high-temperature constitutive properties and damage of polymer-matrix composites (PMC) in an aggressive environment is critical in high-speed aircraft and propulsion material development, structural integrity, and long-term life prediction. In this paper, a computational micromechanics study is conducted to obtain high-temperature constitutive properties of the PMC undergoing simultaneous thermal oxidation reaction, microstructural damage, and thermomechanical loading. The computational micromechanics approach follows the recently developed irreversible thermodynamic theory for polymer composites with reaction and microstructural change under combined chemical, thermal, and mechanical loading. Proper microstructural modeling of the PMC is presented to ensure that reaction activities, thermal and mechanical responses of the matrix, fibers, and fiber-matrix interface are fully addressed. A multiscale homogenization theory is used in conjunction with a finite element representation of material and reaction details to determine continuous evolution of composite microstructure change and associated degradation of the mechanical and physical properties. Numerical examples are given on a commonly used G30-500/PMR15 composite for illustration.

Polymer matrix composites and technology

2011 ◽  
Author(s):  
Ru-Min Wang ◽  
Shui-Rong Zheng ◽  
Ya-Ping Zheng
Keyword(s):  
Polymer Matrix ◽  
Polymer Matrix Composites ◽  
Matrix Composites
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