A portable device for single point strain analysis in sheet metal forming processes

Pankaj Wankhede; Nara Guru Narayanaswamy; Suresh Kurra; Amrita Priyadarshini

doi:10.1016/j.ohx.2022.e00371

A portable device for single point strain analysis in sheet metal forming processes

HardwareX. 2022 Oct 25:12:e00371. doi: 10.1016/j.ohx.2022.e00371. eCollection 2022 Oct.

Authors

Pankaj Wankhede¹, Nara Guru Narayanaswamy², Suresh Kurra¹, Amrita Priyadarshini¹

Affiliations

¹ Department of Mechanical Engineering, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Hyderabad, India.
² Department of Electrical Engineering, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Hyderabad, India.

Abstract

Strain measurement is one of the basic techniques in sheet metal forming for quantifying the deformation of a material under the effects of various loading conditions. The main components in the automatic strain measurement system are the image acquisition hardware and image processing software. This paper presents an automatic single point strain analysis system for sheet metal forming applications. The proposed system is very portable and consists of a USB microscope with different end caps for image acquisition. The software system was developed using Python - OpenCV library and provided with a graphical user interface (GUI).

Keywords: Circle grid analysis; Ellipse fitting; End caps; Sheet metal forming; Strain measurement; USB microscope.