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Full-Text Articles in Mechanical Engineering
Acoustic Emission Detection Of Metals And Alloys During Machining Operations, Jameson K. Nelson
Acoustic Emission Detection Of Metals And Alloys During Machining Operations, Jameson K. Nelson
Purdue Polytechnic Masters Theses
Nelson, Jameson K. M.S., Purdue University, May 2012. Acoustic Emission Detection of Metals and Alloys During Machining Operations. Major Professor: Rodney G. Handy.
Practical correlation between material deformation attributes and theoretical concepts of machining has proven difficult to attain. The purpose of this study was to further explore trends and relationships using acoustic emission detection of materials undergoing single-point lathe turning machine processes. The majority of machining experiments that incorporate acoustic emissions focuses on tool degradation for the purposes of optimizing consumables required to manufacture mechanical devices. Experiments were implemented varying recording location, mechanical barrier condition, and machine parameters. The …
A Digital Hydraulic Valve, Actuated Using A Piezoelectric Linear Motor, Brian C. Bevill
A Digital Hydraulic Valve, Actuated Using A Piezoelectric Linear Motor, Brian C. Bevill
Purdue Polytechnic Directed Projects
Proportional control in hydraulics is widely utilized. The most widely used current types of proportional valves utilize solenoid technology. While this technology has been around for decades and has been proven an effective means of control, there is always a demand for improved performance of advancing technologies. Integrating piezoelectric devices as a means to control hydraulic systems helps advance control for hydraulic systems.
Piezoelectric stack devices have been used to control hydraulic systems with success. Advantages of these stacks include being relatively small with a high power to weight ratio, using less energy than solenoid operations, and being fast acting. …