Investigation on Micro-Tensile Test System Platform Used for Test of the Weld

Article Preview

Abstract:

In this paper, the mechanical properties of electron beam welding TC4 titanium alloy in different regions of the welded joint were studied by using the Micro-tensile test device and digital image correlation method. In the research, the problem of sample's gripping, strain measurement accuracy, load measurement and lens distortion verification are solved. The main work is as follows: The digital image correlation method, which is non-contact, full field measurement, simple, easy operation and high accuracy, is used to measure the strain of the micro tensile specimen, the fine speckle technique for micro mechanical property testing is developed, furthermore, the measurement accuracy of the digital image correlation method for the micro sample is discussed. Finally, the Micro-tensile test system platform is built which can be used to test the micro mechanical properties of the weld.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

55-59

Citation:

Online since:

December 2016

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2017 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

[1] Rodney Boyer, Gerhard Welsch, E.W. Collings. Materials Properties Handbook: Titanium alloys. USA: ASM International, 1994: 829.

Google Scholar

[2] Tan L, Yao Z, Zhou W, et al. Microstructure and properties of electron beam welded joint of Ti–22Al–25Nb/TC11, J. Aerospace Science and Technology, 2010, 14(5): 302-306.

DOI: 10.1016/j.ast.2010.02.002

Google Scholar

[3] Murthy K, SundaresanS. WeldingJournal. 1997, 76: 81.

Google Scholar

[4] Pan B, Qian K, Xie H, et al. Two-dimensional digital image correlation for in-plane displacement and strain measurement: a review, J. Measurement science and technology, 2009, 20(6): 062001.

DOI: 10.1088/0957-0233/20/6/062001

Google Scholar

[5] Sharpe W N. An Interferometric Strain/Displacement Measurement System, NASA Technical Memorandum 101638(1989).

Google Scholar

[6] Sutton M A, Yang B, Reynolds A P, et al. Banded microstructure in 2024-T351and 2524-T351 aluminum friction stir welds: Part II. Mechanical characterization, J. Materials Science and Engineering: A, 2004, 364(1): 66-74.

DOI: 10.1016/s0921-5093(03)00533-1

Google Scholar

[7] Hang C, Yang G, Li Y L, et al. Application of Digital Image Correction Method to Test of Mechanical Properties for Weld Materials, J. Acta Aeronautica ET Astronautica Sinica, 2013, 34(10): 2372-2382.

Google Scholar