International Journal of Earth Sciences and Engineering

The PDF file you selected should load here if your Web browser has a PDF reader plug-in installed (for example, a recent version of Adobe Acrobat Reader).

If you would like more information about how to print, save, and work with PDFs, Highwire Press provides a helpful Frequently Asked Questions about PDFs.

Alternatively, you can download the PDF file directly to your computer, from where it can be opened using a PDF reader. To download the PDF, click the Download link above.

Fullscreen Fullscreen Off


It is difficult to completely prevent the formation of defects in metal press forming, unless inspecting the entire products. This study suggests an in-process inspection using an ultrasonic measurement in order to avoid such a problem. This method is effective for detecting wrinkles formed in a material during the process. A numerical analysis clarified the relationship between wrinkle shapes and the reflection behaviour of ultrasonic waves. In this study, we developed an experimental apparatus that provided quantitative data explaining the relationship between ultrasonic reflection intensity and the wrinkle shapes. The die of the developed apparatus was in sufficient contact with the specimen machined into the wrinkle shape. The ultrasonic reflection characteristics varied by the wrinkle characteristics.

Keywords

Press Forming, Defect Detect, Wrinkle, In-Process, Ultrasonic Measurement.
User
Notifications
Font Size