时间：2015年12月11日下午三点

地点：基础楼301

报告题目Applications of Impulse for Dissimilar Metal Joining

大师简介

Glenn S. Daehn

Glenn S. Daehn is a The Mars G. Fontana Professor in the Department of Materials Science and Engineering at The Ohio State University. He also is the Executive Director of the Honda-Ohio State Partnership Program. Daehn was named a National Young Investigator by NSF, was recipient of the Hardy Medal of TMS (1992), and named a Fellow of ASM in 2010. Daehn's academic training includes a BS from Northwestern University (1983), and MS and PhD degrees from Stanford University (1987), all in Materials Science and Engineering.

内容简介

Impulse based manufacturing processes can use much lighter and more agile machines and tools than standard quasi-static processes and they also enable fundamentally different kinds of material behavior and response.This presentation will describe two methods of developing high pressure and/or speed in sheet metals (electromagnetic and vaporizing foil) and two ways dissimilar materials can be joined (mechanical interference fits and solid-state impact welds).Between these means of developing mechanical work and joining mechanisms a wide variety of joining problems can be treated and provide joints with extremely good performance.Electromagnetic forming does not require a consumable and is suited to providing force along a path.Vaporizing foil methods can produce extremely high pressures and speeds, suitable for impact based solid-state welding.The current status of these methods, the underlying physics and the most promising modes for application will be reviewed.