Adaptive Strain Measurement for Sheet Metal Stampings S. M. Wu Manufacturing Research Center, University of Michigan

Format:

Conference/Event

Author/Creator:

Seshadri, Narasimhan (Nachu), author.

Conference Name:

International Body Engineering Conference & Exposition (2001-10-16 : Detroit, Michigan, United States)

SAE 2002 World Congress & Exhibition (2002-03-04 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2001

Summary:

In this paper, an adaptive strain methodology is developed for experimental strain measurement in sheet metal panels. The principle involves etching uniform small square grids on the panel, and measuring strains adaptively from deformations of large squares comprising of many smaller grids. The methodology uses FEA predicted strains as input and accounts for the experimental noise. The methodology overcomes the inability of the existing practice to simultaneously measure both low and high strain features, and in addition, saves considerable measurement time. The methodology is simple and can be easily integrated with automated strain measurement systems. The algorithm is distinguished for plane strain or radial symmetric panels whose strains vary along 1D (one dimension) and for other panel types whose strains vary along 2D (x and y). Correspondingly, the adaptive methodology is demonstrated for a hemispherical punch stretched and a box drawn panel

Notes:

Vendor supplied data

Publisher Number:

2001-01-3071

Access Restriction:

Restricted for use by site license