R. Narasimhan ¹, K. R. Vijayakumar ²

Affiliations
1 St. Peter’s Institute of Higher Educational and Research University Avadi, Chennai, IN
2 Dr MGR Educational Research Institute University, Maduravoyal, Chennai, IN

Abstract

Objectives: The Objectives of present research work is to investigate the effect of the mechanisms involved in the rice milling process. So that what is the technological improvement can be made. Methods/Statistical Analysis: To identify the rise in temperature and wear patterns present on major machine components of rice polishers. Use of rice milling mechanisms to analyses: temperature, wear, and mechanisms. The testing to identify, the behaviour of the current milling machine materials and their wear resistance in order to set a benchmark from which to measure alternative materials. Findings: Using the understanding of the Rice milling processes to determine what improvements can be made to machine design to reduce the rice in temperature percentage of the wear components. Application/Improvements: It is known that changes in temperature beyond 500C cause change in material properties increasing in the susceptibility of rice grains to cracking and fissuring. Hence in our design of the polishing system, the rise of grain temperature is kept below 200 C to ensure good polishing performance.

Keywords

Frictional Forces, Grains, Rice, Material, Rice Polishing Cams, Octagonal Sieves.

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W. Andrew Nallayan ¹, K. R. Vijayakumar ², Usama Tariq Rasheed ²

Affiliations
1 Mechanical Department, St. Peter’s University, Chennai - 600054, Tamil Nadu, IN
2 Mechanical Department, Dr. M. G. R. Educational and Research Institute, Chennai - 600095 Tamil Nadu, IN

Abstract

Objectives: The composite materials that are used for flat panel Radome in aircrafts are going through continuous up- gradation in an attempt to enhance their performance with extended capabilities against severe environments. The addition of glass microspheres as fillers in cross plied laminates has been done here, with an intention of measuring the extent of its influence in the selected critical mechanical/structural and di electrical properties. Methods: The thin laminates with three and four plies oriented in 0/90-degree order respectively were fabricated by hand lay technique. Using ASTM standards, the samples were cut by water jet cutting and properties like tensile strength, flexural strength, di electrical strength; loss tangent (Dissipation factor) and dielectric constant were latter evaluated. The inter relation between stacking sequences in accordance with unbalanced and balanced nature of three and four plied laminates respectively and the significance of glass fillers in influencing the above properties are the objectives that were projected into the findings. Findings: Apparently, a better structural response to the loading condition was observed in thicker and symmetrically balanced four plied laminates with 10% filler, wherein di electric constant and loss tangent were found to be best for thinner three plied laminates with 10% and 30% fillers respectively. Di electric strength was found to be superior for thinner three plied laminates but with 20% filler addition. The conclusive summary captures the significant role played by the glass microspheres as fillers in influencing the different properties under different testing conditions. Improvements: Besides the glass microspheres the other filler materials with different tradeoffs between di electrical and mechanical/structural properties could be tried to capture the property changes in the offing. Further novelty could be brought in to this spectrum by introducing variations with regard to the ply numbers and their orientations while stacking the plies to build laminates.

Keywords

Cross Plied Laminates, Glass Spheres, Modified Epoxy, Properties of Epoxy/Cyanate, Stacking Functionalization.

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