Comparative Experimental Analysis of Different Bending Methods for the Mechanical Characterization of Materials with Previous Loading History (Stress-Strain Curves)

David Torres Franco; Guillermo Urriolagoitia-Sosa; Guillermo Urriolagoitia-Calderón; Luis Hector Hernandez Gomez; Beatriz Romero Angeles; Vistor Fernando Cedeño Verduzco

doi:10.4028/www.scientific.net/AMR.314-316.1377

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 314-316Comparative Experimental Analysis of Different...

Comparative Experimental Analysis of Different Bending Methods for the Mechanical Characterization of Materials with Previous Loading History (Stress-Strain Curves)

Abstract:

Until now, the most common way to obtain the stress-strain curves for a material is through axial tensile testing. However, in recent years there have been developments on alternative methods for material characterization. In this sense, the bending procedure has proved to be a powerful technique, which allows simultaneous determination of tension and compression stress behavior by the use of bending moment and strain data. The characterization of materials by means of bending data was presented for the first time in 1910 by the German engineer Herbert. Some years later Nadai and Marin developed some research on this procedure. More recently, several researchers (Mayville and Finnie, Laws and Urriolagoitia-Sosa, et.al.) have developed diverse bending methods for the simultaneous determination of tension and compression stress-strain curves. In this paper, three bending methods are analyzed and compared against axial tensile and compressive results. It was decided to apply each one of the bending procedures to bent rectangular cross sections beams made from 6063-T5 Aluminum alloy. The specimens were annealed to eliminate previous loading history and axially pulled to induce a controlled anisotropic behavior (strain hardening and Bauschinger effect). The results obtained by two of the three methods provided great confidence and have certified the application of this new technique to characterize material.

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Advanced Materials Research (Volumes 314-316)

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1377-1382

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.314-316.1377

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Online since:

August 2011

Authors:

David Torres Franco, Guillermo Urriolagoitia-Sosa, Guillermo Urriolagoitia-Calderón, Luis Hector Hernandez Gomez, Beatriz Romero Angeles, Vistor Fernando Cedeño Verduzco

Keywords:

Bending Tests, Characterization, Experimental Analysis, Stress-Strain Curve

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