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Full-Text Articles in Mechanical Engineering

Bi2O3-Y2O3-Ceo2 Solid Solution Oxide-Ion Electrolyte, Kevin Huang, Man Feng, John Goodenough Feb 2015

Bi2O3-Y2O3-Ceo2 Solid Solution Oxide-Ion Electrolyte, Kevin Huang, Man Feng, John Goodenough

Kevin Huang

No abstract provided.


The Mechanism Governing Cutting Of Hard Materials With Hybrid Laser/Waterjet System Through Controlled Fracture, Zhuoru Wu Jan 2015

The Mechanism Governing Cutting Of Hard Materials With Hybrid Laser/Waterjet System Through Controlled Fracture, Zhuoru Wu

Graduate Theses and Dissertations

Ceramics are generally difficult to machine due to their inherent natures of high hardness and low toughness. The present dissertation investigated the mechanism governing cutting of hard ceramic materials with a novel hybrid CO2-Laser/Waterjet (LWJ) system through controlled fracture propagation. It has been proved that the hybrid machining method is more efficient and is capable of providing high quality cutting that overcomes the major drawbacks with current machining techniques including EDM and Nd:YAG laser. The LWJ method implements a high power laser heating followed by low pressure waterjet quenching which subsequently dictates fracture initiation and propagation along the ...


A Study To Evaluate Non-Uniform Phase Maps In Shape Memory Alloys Using Finite Element Method, Naren Motte Jan 2015

A Study To Evaluate Non-Uniform Phase Maps In Shape Memory Alloys Using Finite Element Method, Naren Motte

Theses and Dissertations

The unique thermo-mechanical behavior of Shape Memory Alloys (SMAs), such as their ability to recover the original shape upon heating or being able to tolerate large deformations without undergoing plastic transformations, makes them a good choice for actuators.

This work studies their application in the aerospace and defense industries where SMA components can serve as release mechanisms for gates of enclosures that have to be deployed remotely. This work provides a novel approach in evaluating the stress and heat induced change of phase in a SMA, in terms of the transformation strain tensor. In particular, the FEA tool

ANSYS has ...