Bendability Study of 7xxx Aluminum Alloy Based on the DIC Technique Oakland University

Format:

Book

Conference/Event

Author/Creator:

Xu, Xu, author.

Contributor:

Li, Junrui

Ma, Wen

Yang, Lianxiang

Conference Name:

WCX SAE World Congress Experience (2019-04-09 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2019

Summary:

Bendability is a critical characteristic of sheet metal during the stamping process in automobile industry. Bending operation plays an important role in the panels forming of vehicles. In this study, the recently developed "Incremental Bending" method was utilized to evaluate the ambient bendability of 7xxx series avoiding bending crack. A 3D digital image correlation (DIC) measurement system is improved to capture the displacement and strain information on the stretched side of the sheet samples. The background, experimental method and data post-procedure are introduced in detail. After several sequential images acquisition and data processing, the major strain histories on the stretch zone of the samples are measured. With different bending process and parameters, the location of peak strain and the surface major strain distribution were evaluated as a function of R/T ratio (the inner radius over sheet thickness). The experimental results showed how the bending parameters, such as the tooling radius, bending process, and angle influenced 7xxx AA sheet. The potential applications of the relationship between the peak strain and R/T ratio are proposed

Notes:

Vendor supplied data

Publisher Number:

2019-01-1265

Access Restriction:

Restricted for use by site license