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Duplex structural stainless steels (DP) are highly corrosion-resistant with austenite (c)-ferrite (d) compositions and processing routes. These DP steels are used in chemical, petrochemical, marine, power generation, and nuclear industries due to their unique properties. Experimental data of 2D slices obtained from optical micrography were used in a multilevel finite element analysis to investigate the interface stresses between the two phases of DP material. Level #1 (macro-level) finite element analysis involves homogenizing the 2D slices based on their representative constituent properties to identify high-stress regions. Level #2 (micro-level) finite element analysis was conducted with representative austenite/ferrite microstructure identified from level #1 analysis. The results from finite element simulations from both macro-and microlevels revealed that interface stresses are affected by the phaseÕs microstructure distributions. Micro-level analysis revealed maximum interface stress is much higher than macro-level analysis. It was also found that stress localization occurred at the ferrite/austenite interfaces based on their distributions.

This study targets on wear and frictional characteristics of hybrid polymer. Experiments are carried out on hybrid polymers using reciprocating wear testing machine by sliding against mating steel plate. General purpose resin is blended with Cashew nut shell is used as test specimen. The values of frictional force, frictional coefficient and wear were measured to study the influence of accelerated wear.

As the design of diesel engine is the complex and challenging process, the structured system based design methodology to be followed for the design of high power diesel engine. In order to eliminate the premature failure and ensure the targeted specifications or performance, various design tools like QFD, DFMEA, bench marking, etc, are being adapted during the design phase. A research work was proposed to use DFMEA tool for the design high power diesel engine. In this approach a product modeling of sub system and parts are configured to list the major failure modes, effects of failures, and elimination methods in the design phase and effectiveness of analysis was improved by the structured and inter linked model.