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M. Kępniak and P. Woyciechowski

R eferences 1. ACI Committee 318, Building Code Requirements for Structural Concrete (ACI 318-02) and Commentary (ACI 318R-02), American Concrete Institute, 2002. 2. EN 1992-1-1:2004, Eurocode 2: Design of concrete structures. Part 1: General rules and rules for buildings, European Committee for Standardization, 2004. 3. Model Code 2010 - Final draft, Volume 2, Bulletin 66, 2012. 4. J.M. Rapheal, Tensile Strength of Concrete, Jurnal Proceedings, Vol. 81, Issue 2, 1984. 5. I. Narrow, E. Ullberg, Correlation Between Splitting Strength

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Sarka Nedomova, Jan Trnka and Jaroslav Buchar

Abstract

The effect of loading rate as well as the cocoa content on the tensile strength of dark chocolate has been studied. Tensile strength was measured using the Brazilian test. The main advantage of this test consists in the use of a specimen of simple geometry in comparison with a specimen for tensile tests. Tensile strength increases with loading rate. The cocoa content exhibits the same effect.

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Subhas Chandra Moi, Pradip Kumar Pal, Asish Bandyopadhyay and Ramesh Rudrapati

, S. Sundarrajan. Optimization of pulsed TIG welding process parameters on mechanical properties of AA 5456 Aluminum alloy weldments. Materials and Design 2009 (30), No. 4, 1288 - 1297. [12] N. Murugan, R. S. Parmer. Effects of MIG process parameters on the geometry of the bead in the automatic surfacing of stainless steel. Journal of Materials Processing Technology 1994 (41), No. 4, 381 - 398. [13] G. Padmanaban, V. Balasubramanian. Optimization of laser beam welding process parameters to attain Maximum tensile strength in AZ31B

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J. Pezda

Solution Treatment. Journal of Advanced Materials Processing Technology, 109, 174-180. [17] Pezda, J. (2014). Effect of shortened heat treatment on the hardness and microstructure of 320.0 aluminium alloy. Archives of Foundry Engineering, 14(2), 27-30. [18] Pezda, J. (2008). Effect of selected heat treatment parameters of AK9 silumin on its tensile strength. Archives of Foundry Engineering, 8(3), 81-84.

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Emilia Urbanek, Rainer Horn and Alwin J.M. Smucker

determination of tensile strength of soil aggregates. Journal of Agricultural Engineering Research / publ. for the British Society for Research in Agricultural Engineering, 31, 139-147. Dutarte, P., Bartoli, F., Andreux, F., Portal, J.M., Ange, A., 1993. Influence of content and nature of organic matter on the structure of some sandy soils from West Africa. Geoderma, 56, 459-478. Hadas, A., 1990. Directional strength in aggregates as affected by aggregate volume and by a wet/dry cycle. Journal of Soil Science, 41, 85-93. Holland

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Anurag V. Tiwari and Y R M Rao

and bituminous materials - Determination of specific gravity [l6]. IS 1208: 1978 Methods of testing tar and bituminous material - Determination of ductility [17]. ASTM D 6931 (2007), “ Indirect Tensile (IDT) Strength for Bituminous Mixtures ”, American Society for Testing and Materials, Philadelphia.

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Sylwia Stępień and Alojzy Szymański

References [1] CASTRO C.A.C., GUIMARÃES M.G.A., LOPES M.L.C., URASHIMA D.C., Durability of a Polypropylene Woven Geotextile under Climatic and Chemical Agents, 10th International Conference on Geosynthetics, 21-25 September 2014, Berlin, 2014. [2] CHIWAN H., YEN-CHEN T., Tensile creep behavior of a PVC coated polyester geogrid at different temperatures, Journal of GeoEngineering, 2008, Vol. 3(3), 113-119. [3] CHODYŃSKI A., Dobór geotekstyliów, Międzynarodowa Konferencja Naukowo-Techniczna: „Geotekstylia w

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B. Trumić, L. Gomidželović, S. Marjanović, V. Krstić, A. Ivanović and S. Dimitrijević

Abstract

In this paper are presented investigation results of tensile strength and elongation of selected alloys from Pt-Rh system. Samples with the content of rhodium in a concentration range of 7-40% (wt.) were studied. Studies were performed in the temperature range 1100-1500°C at a stress of 2-20 MPa. A universal device for measuring hardness was used to measure the Vickers hardness. For investigation of time strength and elongation at high temperatures, the device Mayes MK2 TC/10 was used. It was found that the value of tensile strength increases with increasing rhodium content, and decreases with increasing temperature. Elongation decreases to 7% Rh, then increases with increasing rhodium content to 15% and then slowly decreases again. With increasing temperature there is a slight increase in elongation.

Open access

A. Hamdollahzadeh, H. Omidvar and A. Amirnasiri

Abstract

In this paper, effects of preheating and type of electrode (E8010 and E8018) on microstructure and mechanical properties of 5L X70 steel welded joints were investigated. The microstructure of joint zone and fracture surface was analyzed by light optical microscope and scanning electron microscope equipped with energy dispersive spectroscopy. Hardness mapping and tensile test were also performed to find the relationship between microstructure and mechanical properties. The results showed a consistency between the hardness variation data and the microstructure of joint zone. Moreover, hardness mapping revealed coarse and fine grain subregions in the heat affected zone which were not detected in the micrographs. The tensile test indicated that the non-preheated sample, welded by cellulosic E8010, had the minimum value in the strength and the ductility of welded steel. The fractography also determined that size and distribution of strengthening phases affected the fracture mode of welded specimens.

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Brijpal Singh, Zahid A. Khan, A.N. Siddiquee, Sachin Maheswari and Satish Kumar Sharma

2001 [11] O. Grong, T.A. Siewert, G.P. Martins, and D.L. Olson. A model for the silicon-manganese deoxidation of steel weld metals. Metallurgical and Materials Transactions A , 17(10):1797–1807, 1986. Grong O. Siewert T.A. Martins G.P. Olson D.L. A model for the silicon-manganese deoxidation of steel weld metals Metallurgical and Materials Transactions A 17 10 1797 1807 1986 [12] D.J. Abson and R.J. Pargeter. Factors influencing as-deposited strength, microstructure, and toughness of manual metal arc welds suitable for C