Design and Development of Grip for Circular Test Piece Inuniversal Tensile Testing Machine


The design and development of jaw grip for circular tensile test samples in a universal mechanical tester were undertaken in this work. In developing economies, the cost of acquiring laboratory testing equipment and accessories is huge, thereby depriving most of the supposedly advanced laboratories of most of this necessary research equipment. Where the equipment is available, they are either non-functional due to inadequate maintenance know-how or non-availability of necessary accessories. The developed grip in this work is part of an effort at providing accessories as their need arises. Advanced design and manufacturing tools were deployed to develop the jaw grip by using austenitic stainless steel. The developed jaw grip was used on the test equipment to conduct tensile tests on steel samples and the results were found to conform to international standard. Consequently, replacement of worn-out accessories has been carried out in resent time, which eventually saves idle time of equipment or otherwise importation for replacement.

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O. Akinribide, A. Ogunkoya, I. Momoh, O. Ogundare, B. AttahDaniel and S. Olusunle, "Design and Development of Grip for Circular Test Piece Inuniversal Tensile Testing Machine," Journal of Minerals and Materials Characterization and Engineering, Vol. 1 No. 6, 2013, pp. 331-335. doi: 10.4236/jmmce.2013.16050.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] ASTM E8M3 Standard Test Method for Tension Testing of Metallic Materials, 2009.
[2] D. Mohr and S. Henn, “Calibration of Stress-Triaxiality Dependent Crack Formation Criteria: A New Hybrid Experimental-Numerical Method,” Experimental Mechanics, Vol. 47, No. 6, 2007, pp. 805-820.
[3] Engineer? Wildfire? 5.0, “Help Center,” Parametric Technology Corporation, Needham, 2009.
[4] H. Czichos, T. Saito and L. Smith, “Springer Handbook of Materials Measurement Methods,” Springer-Verlag, New York, 2006, pp. 302-307.
[5] Granta (Materials Intelligence) CES 2007 EduPack, “Getting Started with CSE EduPack,” Granta Design Limited, Cambridge, 2007.
[6] J. Aegerter and H. Bloching, “Tensile Test on Materials According to EN 10002-1 (Issue December 2001),” 11th Trade Fair for Testing Technology, ZwickHausmesse, October 2002, pp. 167-188.
[7] J. Aegerter and H. Bloching, “Probenformenund Herstellungfür die Prüfungmetallischer Werkstoffe-Schwerpunkt Zugversuch (Specimen Geometries and Specimen Preparation for Testing Metallic Materials, Especially Tensile Test),” 12th Trade Fair for Testing Technology, ZwickHausmesse, October 2003, pp. 50-62.
[8] W. Eyassu and T. Henry, “Mechanical Testing (Tensile Testing),” Louisiana State University, 2009.
[9] Y. Bao and T. Wierzbicki, “On Fracture Locus in the Equivalent Strain and Stress Triaxiality Space,” International Journal of Mechanical Sciences, Vol. 46, No. 1, 2004, pp. 81-98.
[10] Z. C. Chen, et al., “Bauschinger Effect and Multi-Axial Yield Behavior of StressReversed Mild Steel,” Metallurgical and Materials Transactions A, Vol. 30A, 1999, pp. 3069-3078.

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