Finite Element Simulation ForThermal Analysis In Laser Forming Of D36 Ship Building Steel

The laser bending process is one of the advanced bending processes which can be achieved by elasto-plastic deformation through the local introduction of thermal stresses. It is a thermo-mechanical process in which a laser heat source of suitable power is used for bending the material rather than any external force. In this work, sequential thermal analysis is carried out for SOLID70 element by using ANSYS. The deformation of a sheet, subjected to an irradiation, has been studied through a sequentially coupled thermo-mechanical elasto-plastic simulation by using the finite element model (FEM). D36 shipbuilding steel sheet has been taken as the work-piece material for the analysis. The thermal effects due to heat input into the work piece are analyzed which includes temperature distribution, thermal flux distribution, thermal gradient distribution and variation of thermal properties with time.Keywords: Laser beam forming, Gaussian distribution, FEM

Sustainable prospective of some selected species from Moraceae and Araceae family of Northeast India: A Review

The north-eastern region of India is a rich hub of floristic diversity. The intricate relationship between forest resources and indigenous people is a key to sustainability and rural livelihood. The objective is to review on some plants that has possible function for sustainable source of food. The regional people have been utilizing various species of the two commonly available angiosperm plant families viz. Araceae (Alocasia macrorrhizos, Colocasia esculenta) and Moraceae (Ficus carica, F. semicordata, F. auriculata) as a source of food, herbal medicine, and fodder plants. A variety of natural compounds found among various members of these two families are alkaloids viz., Alocasin B, ?-monopalmitin in A. macrorrhizos; flavonoids viz., orientin, isovitexin, in C. esculenta; betulinic acid, lupeol in F. auriculata; quercetin, leucine, tryptophan in F. carica; terpenoids like ?-thuzene, ?-pinene in F. semicordata; besides the presence of phenols, tannins, saponins, fats, carbohydrates, amino acids and proteins, minerals like Ca, Mg, K, Mn, Cu. The rich tradition of indigenous herbal healthcare practices for curing various ailments are widespread among the rural communities. The review entails the indigenous practices with pharmacological efficacy, phytochemistry and sustainable prospects of Moraceae and Araceae which are widely used in food, nutraceutical and medicinal aspects. These lesser-known plant species may attribute to ecological restoration, bioremediation of toxic compounds, discovery of novel therapeutics, sources of carbon sink in near future as well