Title

Acoustic Emission (AE) Monitoring of Open Die and Closed Die Forging Processes of Al Alloy

Document Type

Article

Publication Date

2-28-2007

Publication Title

Materials and Manufacturing Processes

Volume

22

Issue

7

First page number:

887

Last page number:

892

Abstract

Acoustic emission (AE) generated during open die and closed die forging processes of Al alloy has been studied. AE generated during both types of the forging processes could be differentiated into three stages, namely, yielding of the workpiece material upon start of forging, intermediate deformation and filling of the die. The effect of lubrication on the AE generated during open die forging was also studied. This showed that AE increases with decreasing lubrication of the workpiece thus enabling AE to detect lubrication inadequacy/breakdown during the forging process.

Keywords

Acoustic emission; Acoustic emission (AE); Al Alloy; Aluminum alloys; Aluminum alloys – Nondestructive testing; Closed die forging; Die filling; Dies (Metal-working); Dislocation avalanche; Forging; Forming; Friction; Lubrication; Monitoring; Nondestructive technique; Open die forging; Peak amplitude distribution; Piezoelectric; Sliding; Yielding

Disciplines

Engineering | Materials Science and Engineering | Mechanical Engineering | Metallurgy

Language

English

Permissions

Use Find in Your Library, contact the author, or interlibrary loan to garner a copy of the item. Publisher policy does not allow archiving the final published version. If a post-print (author's peer-reviewed manuscript) is allowed and available, or publisher policy changes, the item will be deposited.

Identifier

DOI: 10.1080/10426910701448974

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