The microneedle is used to deliver the drug inside the skin structure. During the insertion procedure, the microneedle travel up to the dermis layer through the stratum corneum and epidermis layer. The microneedle have a tendency to critically buckle when the applied load achieves the maximum buckling load. To avoid structural failure of the microneedle, the critical load is identified and safely applied. In this paper, the critical buckling load is identified using the linear and non-linear buckling analysis. The critical load using linear buckling analysis is found to be 263.7µN. The non-linear or post -buckling analysis is performed for the load of 263.7µN and the critical load is found to be 149µN. Thus for silicon microneedle, the critical load is identified as 149µN. Henceforth for silicon microneedle, the applied load should always be smaller than the critical buckling load for safe insertion.
The conductors that can embrace high temperature low sag characteristics are known as HTLS conductors. The coefficient of thermal expansion of High temperature low sag conductor is lesser than that of conventional conductors. This thereby results in reduced sag with a high rating. Among some HTLS conductor accessible, the Aluminium Conductor Composite Core (ACCC) conductor has a lightweight inner composite core. The geometric model of the ACCC/TW conductor is modeled and analyzed using finite element analysis. The ACC/TW conductor is composed of an inner composite core surrounded by two aluminium layers wound in a clockwise and anti-clockwise direction. The inner composite core is made of glass carbon composite material. The core is surrounded by the first layer consisting of 8 individual strands wound in a clockwise direction. The second layer consists of 14 individual aluminium strands wound in an anticlockwise direction. In this paper, the individual core and assembled conductor are analyzed using FEA software to predict the behavior under loading conditions. The attained outcomes are validated with the experimental work reported in the literature.
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