Application of Using the Optical Strain Measuring Device in Material Testing and Tools and Dies Design

Abstract:

Optical strain analysis system plays an important role in tools and dies design, particularly in the phase of die design and die tryout. The objective of this paper is to present the information of the application by using the optical strain measurement device in tools and dies design and material testing. Therefore, two cases in mechanical testing and one case of tools and dies design are demonstrated. The AutoGrid^® Compact strain measuring device is applied for all cases. The determination of Forming Limit Diagram (FLD) by using tensile testing machine and U-bending test supported by the optical strain measuring technique is performed and illustrated. In this paper, the procedure of material testing is developed and applied from related literatures. The result obtained from several cases shows the powerful performance of using the strain measurement device for providing the strain information in each situation of forming material as required so that the engineer can tackle the problem and find the solution to improve the production processes in a short time.

• Periodical: Advanced Materials Research (Volumes 931-932)
• Pages: 317-321
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.931-932.317
• Online since: May 2014
• Authors: K. Sirivedin*
• Keywords: AutoGrid^® Compact, Dies Design, FLD, Material Testing, Strain Measurement, Tool Design, Tryout, U-Bending Test

References

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[2] W. Bleck, Material characterization 2nd edition, RWTH Aachen University, Germany, (2010).

[3] American Society for Testing and Materials, Standard Test Method for Determining Forming Limit Curves, U.S. (2008).

[4] K. Narasimhan, M.P. Miles and R.H. Wagoner, A better sheet-formability test, Materials Processing Technology, vol. 50, 1995, pp.385-394.

DOI: 10.1016/0924-0136(94)01400-u