ORIGINAL_ARTICLE
Linear Numerical Stress Analysis of Concrete Specimens under Different Direct Tension Test Setups
Tensile strength is one of the basic and important mechanical properties of concrete. The measurement of the tensile strength of concrete is not easy. This is because this property of concrete is dependent on the different test setups that must be used. Indirect methods have been used hitherto to measure tensile strength of concrete. These methods though widely accepted, do not provide the true tensile strength of concrete in comparison with direct methods. According to this, the present study focuses on the analytical and experimental investigation of the prismatic concrete specimensunder direct tension test setups. In this paper, different test setups were studied to produce a more uniform tensile stress distribution and minimize stress concentration at both ends of the concrete specimens with normal compressive strength. ABAQUS software was employed to carry out the finite element analysis of the concrete specimens under direct tension test setups.
https://jrstan.basu.ac.ir/article_1913_c7f4ba1b2657e1dab3745fa01eebb549.pdf
2017-03-01
1
12
10.22084/jsa.2017.12251.1011
Direct tension
tensile strength
Tensile stress distribution
Finite element analysis
ABAQUS
H.
Dabbagh
h.dabbagh@uok.ac.ir
1
Civil Engineering Department, Kurdistan University, Sanandaj, Iran.
LEAD_AUTHOR
A.
Nosoudi
arina.nosoodi@eng.uok.ac.ir
2
Civil Engineering Department, Kurdistan University, Sanandaj, Iran.
AUTHOR
H.
Mohammad Doost
hooman.5058@gmail.com
3
Civil Engineering Department, Kurdistan University, Sanandaj, Iran.
AUTHOR
[1] J.M. Raphael, Tensile strength of concrete, Aci. J., 81(2) (1984) 158-165.
1
[2] M.P. Luong, Tensile and shear strengths of concrete and rock, Eng. Fract. Mech., 35(1-3) (1990) 127-135.
2
[3] C. Rocco, G.V. Guinea, J. Planas, M. Elices, Review of the splitting-test standards from a fracture mechanics point of view, Cement. Concrete. Res., 31(1) (2001) 73-82.
3
[4] H. Schuler, C. Mayrhofer, K. Thoma, Spall experiments for the measurement of the tensile strength and fracture energy of concrete at high strain rates, Int. J. Impact. Eng., 32(10) (2006) 1635-1650.
4
[5] D. Yan, G. Lin, Dynamic properties of concrete in direct tension, Cement. Concrete. Res., 36(7) (2006) 1371-1378.
5
[6] R.S. Olivito, F.A. Zuccarello, An experimental study on the tensile strength of steel fiber reinforced concrete. Compos. Part. B-Eng., 41(3) (2010) 246-255.
6
[7] Y. Tian, S. Shi, K. Jia, S. Hu, Mechanical and dynamic properties of high strength concrete modified with lightweight aggregates presaturated polymer emulsion. Const. Build. Mater., 93 (2015) 1151-1156.
7
[8] M.W. Ibrahim, A.F. Hamzah, N. Jamaluddin, P.J. Ramadhansyah, A.M. Fadzil, Split tensile strength on self-compacting concrete containing coal bottom ash. Proc. Soc. Behv., 195 (2015) 2280-2289.
8
[9] R.V. Silva, J. De-Brito, R.K. Dhir, Tensile strength behaviour of recycled aggregate concrete. Const. Build. Mater., 83 (2015) 108-118.
9
[10] N.N. Gerges, C.A. Issa, S. Fawaz, Effect of construction joints on the splitting tensile strength of concrete. Case Studies in Construction Materials, 3 (2015) 83-91.
10
[11] ASTM, Standard test method for flexural strength of concrete (using simple beam with third-point loading), Am. Soc. Test. Mater. C., (2002) 78-102.
11
[12] ASTM, Standard test method for flexural strength of concrete (Using sample beam with center-point loading), Annual book of ASTM standards, Am. Soc. Test. Mater. C., (2003) 293-302.
12
[13] ASTM, Standard Test Method for Splitting Tensile Strength of Cylindrical Concrete Specimens, C. (2004) 496/C 496M-04.
13
[14] C. Rocco, G.V. Guinea, J. Planas, M. Elices, Size effect and boundary conditions in the Brazilian test: experimental verification. Mater. Struct., 32(3) (1999) 210-217.
14
[15] C. Rocco, G.V. Guinea, J. Planas, M. Elices, Size effect and boundary conditions in the Brazilian test: theoretical analysis. Mater. Struct., 32(6) (1999) 437-444.
15
[16] W. Zheng, A.KH. Kwan, P.K.K. Lee, Direct tension test of concrete, Materials, 98(1) (2001) 63-71.
16
[17] V. Kadlecek, Z. Spetla, Direct tensile strength of concrete, Materials, 2(4) (1967) 749-767.
17
[18] F. Min, Z. Yao, T. Jiang, Experimental and Numerical Study on Tensile Strength of Concrete under Different Strain Rates. Scientific. World. J., 2014 (2014) 11 173531.
18
[19] S. Swaddiwudhipong, H.R. Lu, T.H. Wee, Direct tension test and tensile strain capacity of concrete at early age. Cement. Concrete. Res., 33(12) (2003) 2077-2084.
19
[20] F. Alhussainy, H.A. Hasan, S. Rogic, M.N. Sheikh, M.N. Hadi, Direct tensile testing of self-compacting concrete, Const. Build. Mater., 112 (2016) 903-906.
20
[21] H. Wu, Q. Zhang, F. Huang, Q. Jin, Experimental and numerical investigation on the dynamic tensile strength of concrete, Int. J. Impact. Eng., 32(1) (2005) 605-617.
21
[22] Y.B. Lu, Q.M. Li, About the dynamic uniaxial tensile strength of concrete-like materials, Int. J. Impact. Eng., 38(4) (2011) 171-180.
22
[23] A. Fahimifar, M. Malekpour, Experimental and numerical analysis of indirect and direct tensile strength using fracture mechanics concepts, B. Eng. Geol. Environ., 71(2) (2012) 269-283.
23
[24] H.F. Gonnerman, E.C. Shuman, Compression, flexure and tension tests of plain concrete, Aci. J., 28(2) (1928) 527-564.
24
[25] M. Saito, Direct tensile fatigue of concrete by the use of friction grips, Aci. J., 80(5) (1983) 431-438.
25
[26] V.S. Gopalaratnam, S.P. Shah, Softening response of plain concrete in direct tension, Aci. J., 82(3) (1985) 310-323.
26
[27] X. Nianxiang, L. Wenyan, Determining tensile properties of mass concrete by direct tensile test, Materials, 86(3) (1989) 214-219.
27
[28] D.V. Phillips, Z. Binsheng, Direct tension tests on notched and un-notched plain concrete specimens. Mag. Concrete. Res., 45(162) (1993) 25-35.
28
[29] RILEM TC, Direct Tension of Concrete Specimens 1975 TC14-CPC, RILEM Technical Recommendations for the Testing and Use of Construction Materials, (1994) 23-24.
29
[30] U.S. Bureau of Reclamation, Procedure for Direct Tensile Strength, Static Modulus of Elasticity, and Poissons Ratio of Cylindrical Concrete Specimens in Tension (USBR 4914-92) Concrete Manual, Part 2, 9th Edition, U.S. Bureau of Reclamation, Denver, (1992) 726-731.
30
[31] ABAQUS Analysis Users Manual, Version 6.14-2, (2014) Dassault Systemes Simulia Corp. RI, USA.
31
ORIGINAL_ARTICLE
A New Method for Correcting the Stress-Strain Curves after Bulging in Metals
True stress-strain curve has a basic role in the analysis of deformation in theoretical plasticity and numerical simulations. Because of the triaxial state of stresses in the necking or bulging zones, in tension and the compression tests respectively, the true stress-strain curves obtained from relationsare no longer valid and must be corrected. Various correction techniques have been proposed and can be found in literatures. In this study, a new semi-analytical approach for correction of the stress-strain curve in compression test for circular cross-section specimens was introduced and a relation for the correction factor was derived based on the theory of plasticity. This relation requires only a few experimental surface strain measurements which can easily be done using an image processing technique. The correction factor formula was obtained in terms of the initial radius of specimen, the bulge radius, and the surface strain on the bulge surface. The proposed approach in this study was compared with the results of the numerical simulations. Simulation was used to correct the stress-strain curve based on the optimization method with comparing the bulging profile of tested samples and ones simulated by using genetic algorithm.
https://jrstan.basu.ac.ir/article_1914_5d8c6bee681805f82a5c8c3b23b336e9.pdf
2017-03-01
13
23
10.22084/jsa.2017.12608.1013
Stress-strain curve
Correction factor
Image processing method
Numerical simulation
F.
Fariba
farzad.fariba@gmail.com
1
Mechanical Engineering Department, Hamedan Branch, Islamic Azad University, Hamedan, Iran.
LEAD_AUTHOR
M.
Ahmadpour
a.ahmadpur@gmail.com
2
Mechanical Engineering Department, Hamedan Branch, Islamic Azad University, Hamedan, Iran.
AUTHOR
H.
Bahrami
hadi.bahrami@gmail.com
3
Department of Computer Science, South Tehran Branch, Islamic Azad University, Tehran, Iran.
AUTHOR
[1] G.H. Majzoobi, F. Fariba, M.K. Pipelzadeh, S. Hardy, A new approach for the correction of the stress-strain curves after necking in metals, J. Strain. Analysis., 13 (2014) 253-266.
1
[2] F. Barati, S. Kazemi, Modeling flow stress compressive curves of AZ71 Magnesium alloy at high temperature and various strain rates, J. Science and Today World., 3 (2014) 72-74.
2
[3] P.W. Bridgeman, The stress distribution at the neck of a tension specimen, Trans. Amer. Soc. Metal, 32 (1944) 553-574.
3
[4] E. Siebel, A. Pomp, Determination of flow stress and friction with the upsetting test. Mitt. KWI, 9 (1927) 157-171.
4
[5] Kocaker, B, Production properties prediction after forming process sequence, MSc Thesis. Turkey: Middle East Technical University; 2003.
5
[6] Y. Sato, Y. Takeyama, An extrapolation method for obtaining stress-strain curves at high rates of strain in uniaxial compression, Tech. Rep. Tohoku. Univ., 44 (1980), 287-302.
6
[7] E. Parteder, R. B¨unten, Determintion of flow curve by means of a compression test under sticking friction condition using an iterative finite- element procedure, J. Mater. Process. Tech., 74 (1998) 227-223.
7
[8] G.H. Majzoobi, F. Fres, Determination of material parameter under dynamic loading part I: Experiments and simulation, J. Comp. Mater., 49 (2010) 192-200.
8
[9] G.H. Majzoobi, R. Bagheri, J. Payandeh-Peyman, Determination of material parameter under dynamic loading part II, Optimization, J. Comp. Mater. Sci., 49 (2010) 201-208.
9
[10] O. Etttouny, D. Ehardt, A method for in-process failure prediction in cold upset firging, J of engineering and industrial, 105 (1983) 161-167.
10
[11] ASTM, E8. Standard methods of tension testing of metallic materials, Annual book of ASTM standard. American society for testing and materials. 3.01.
11
ORIGINAL_ARTICLE
Evaluation Effects of Modeling Parameters on the Temperature Fields and Residual Stresses of Butt-Welded Stainless Steel Pipes
In this paper, the effects of modeling parameters on the temperature field and residual stresses of butt-welded stainless steel pipes were investigated by using finite element modeling in ABAQUS code. The investigated parameters included, heat flux distribution, latent heat, and heat flux type. The birth and death techniques were utilized to consider mass addition from Y308L filler metal into the weld pool. The moving heat source and convection heat transfer were also modeled by a user subroutine DFLUX and FILM in ABAQUS code. In this work, for verification of FE modeling the temperature fields and residual stresses were compared with available experimental results. The simulation results showed that heat flux with a double ellipsoidal distribution proposed by Goldak associated with latent heat parameter and employed a fully volumetric arc heat input, representing the best match with the experimental data.
https://jrstan.basu.ac.ir/article_1915_e5e0e65911ace9dc6ca8eb1b07d87834.pdf
2017-03-01
25
33
10.22084/jsa.2017.11132.1002
Residual stress
Butt-welded
Stainless steel pipe
Temperature field
S.
Feli
felisaeid@gmail.com
1
Mechanical Engineering Department, Razi University, Kermanshah, Iran.
LEAD_AUTHOR
M.E.
Aalami Aaleagha
me_aalami_aleagha@yahoo.com
2
Mechanical Engineering Department, Razi University, Kermanshah, Iran.
AUTHOR
M.R.
Jahanban
mohammadreza.jahanban@yahoo.com
3
Mechanical Engineering Department, Razi University, Kermanshah, Iran.
AUTHOR
[1] D. Deng, H. Murakawa, Numerical simulation of temperature field and residual stress in multi-pass welds in stainless steel pipe and comparison with experimental measurements, Comp. Mater. Sci., 37(3) (2006) 269-277.
1
[2] B. Brickstad, B.L. Josefson, A parametric study of residual stresses in multi-pass butt-welded stainless steel pipes, Int. J. Pres. Ves. Pip., 75(1) (1998) 11-25.
2
[3] T. Tso-Liang, C. Peng-Hsiang, T. Wen-Cheng, Effect of welding sequences on residual stresses, Comput. Struct., 81 (2003) 273-286.
3
[4] C.H. Lee, K.H. Chang, Three-dimensional finite element simulation of residual stresses in circumferential welds of steel pipe including pipe diameter effects, Mat. Sci. Eng., A 487 (2008) 210-218.
4
[5] I. Sattari-Far, M.R. Farahani, Effect of the weld groove shape and pass number on residual stresses in butt-welded pipes, Int. J. Pres. Ves. Pip., 86 (2009) 723-731.
5
[6] S. Feli, M. E. Aalami Aleagha, M. Foroutan, E. Borzabadi Farahani, Finite element simulation of welding sequences effect on residual stresses in multipass butt-welded stainless steel pipes, J. Press. Vessel. Technol., 134(1) (2012) 9 011209.
6
[7] M. Foroutan, M. E. Aalami-Aleagha, S. Feli, S. Nikabadi, Investigation of hydrostatic pressure effect on the residual stresses of circumferentially butt-welded steel pipes, J. Press. Vessel. Technol., 134(3) (2012) 4 034503.
7
[8] Dean Deng, FEM prediction of welding residual stress and distortion in carbon steel considering phase transformation effects, Mater. Des., 30 (2009) 359-366.
8
[9] A. Goldak John, M. Akhlaghi, Computational Welding Mechanics, Springer Science, 2005.
9
[10] V. Pavelic, R. Tanbakuchi, O.A. Uyehara, P. S. Myers, Experimental and computed temperature histories in Gas Tungsten Arc Welding of thin plates, Weld. J., 48(7) (1969) 295-305.
10
ORIGINAL_ARTICLE
An Analytical Model for Long Tube Hydroforming in a Square Cross-Section Die Considering Anisotropic Effects of the Material
In this paper, a mathematical model was developed to analyze the hydroforming process of a long anisotropic circular tube into a square cross-section die. By using the thickness variation in two extreme cases of friction between the tube and die wall, namely no friction and sticking friction cases, thickness variation in the case of sticking friction was captured in the model. Then by using equilibrium equation for contact length segment, thickness distribution was determined and corresponding forming pressure is predicted. It was shown that in a plane strain state, anisotropic value has no influence on thickness variation of the deformed tube and the forming pressure will increase when the anisotropic value increases. The analytical results of forming pressures and thickness distributions were compared with the results available in theliterature to verify the validity of this simple analytical proposed model.
https://jrstan.basu.ac.ir/article_1916_17d097ab9e40e4b4fdea29eef024c5cf.pdf
2017-03-01
35
41
10.22084/jsa.2017.11676.1009
Tube hydroforming
Anisotropic
Square cross-section die
H.
Haghighat
hhaghighat@razi.ac.ir
1
Mechanical Engineering Department, Razi University, Kermanshah, Iran.
LEAD_AUTHOR
A.
Janghorban
2
Mechanical Engineering Department, Razi University, Kermanshah, Iran.
AUTHOR
[1] J. Chen, Z. Xia, S. Tang, Corner fill modeling of tube hydroforming. Proceedings of the ASME, Manufacturing in Engineering Division, 11 (2000) 635-640.
1
[2] G. Kridli, L. Bao, P. Mallick, Two-dimensional plane strain modeling of tube hydroforming. Proceedings of the ASME, Manufacturing in Engineering Division, 11 (2000) 629-634.
2
[3] Y. Hwang, T. Altan, Finite element analysis of tube hydroforming processes in a rectangular die, Finite. Elem. Anal. Des., 39 (2002) 1071-1082.
3
[4] F. Vollertson, M. Plancak, On the possibilities for the determination of the coefficient of friction in the hydroforming of tubes. J. Mater. Process. Technol., 1125/1126 (2002) 412-420.
4
[5] G.T. Kridli, L. Bao, P.K. Mallick, Y. Tian, Investigation of thickness variation and corner filling in tube hydroforoming, J. Mater. Process. Technol., 133 (2003) 287-296.
5
[6] G. Liu, S. Yuan, B. Teng, Analysis of thinning at the transition corner in tube hydroforming, J. Mater. Process. Technol., 177 (2006) 688-691.
6
[7] Y.M. Hwang, W.C. Chen, Analysis and finite element simulation of tube expansion in a rectangular cross-sectional die, Proceedings of the Institution of Mechanical Engineers, Part B: J. Eng. Manufact., 217 (2003) 127-135.
7
[8] Y.M. Hwang, W.C. Chen, Analysis of tube hydroforming in a square cross-sectional die. Int. J. Plasticity., 21 (2005) 1815-1833.
8
[9] J.H. Orban, S.J. Hu, Analytical modeling of wall thinning during corner filling in structural tube hydroforming, J. Mater. Process. Technol., 194 (2007) 7-14.
9
[10] J.E. Miller, S. Kyriakides, A.H. Bastard, On bendstretch forming of aluminum extruded tubes I: experiments, Int. J. Mech. Sci. 43 (2001) 1283-1317.
10
[11] J.E. Miller, S. Kyriakides, E. Corona, On bendstretch forming of aluminum extruded tubes II: analysis, Int. J. Mech. Sci., 43 (2001) 1319-1338.
11
[12] E. Corona, A simple analysis for bend-stretch forming of aluminum extrusions, Int. J. Mech. Sci., 46 (2004) 433-448.
12
[13] Y. Guan, F. Pourboghrat, Fourier series based finite element analysis of tube Hydroforminggeneralized plane strain model, J. Mater. Process. Technol., 197 (2008) 379-392.
13
[14] Y. Guan, F. Pourboghrat, W. Yu, Fourier series based finite element analysis of tube hydroformingan axisymmetric model, Eng. Computations., 23 (2008) 697-728.
14
[15] L.M. Smith, J.J. Caveney, T. Sun, Fundamental concepts for corner forming limit diagrams and closed-form formulas for planar tube hydroforming analysis, J. Manufact. Sci. Eng., 128 (2006) 874-883.
15
[16] L.M. Smith, T. Sun, A non-finite element approach for tubular hydroforming simulation featuring a new sticking friction model, J. Mater. Process. Technol., 171 (2006) 214-222.
16
[17] C. Yang, G. Ngaile, Analytical model for planar tube hydroforming: Prediction of formed shape, corner fill, wall thinning, and forming pressure, Int. J. Mech. Sci., 50 (2008) 1263-1279.
17
[18] Z. Marciniak, J.L. Duncan, S.J. Hu, Mechanics of Sheet Metal Forming, second ed., Butter- worth Heinemann, 2002.
18
ORIGINAL_ARTICLE
An Approach to Designing a Dual Frequency Piezoelectric Ultrasonic Transducer
This paper has been devoted to such approach for designed and fabricated the dual frequency piezoelectric ultrasonic transducer having longitudinal vibrations for high power application. By using analytical analysis, the resonance frequency equations of the transducer in the half-wave and the all-wave vibrational modes were determined for the assumed first resonance frequency of 25kHz. According to the resonance frequency equation, four transducers with two different constructions (Type A and B) were designed and made. The finite element method provided by commercial ANSYS was employed for FEM modeling and analysis of the transducer to observe its vibration behavior. It was shown that there is a good agreement between the experimental and FEM results. The designed and fabricated transducer can be excited to vibrate at two resonance frequencies, which correspond to the half-wave and the all-wave vibrational modes of the transducer, and use of Type B transducer greatly increased the mechanical quality factor (Q) of piezoelectric transducers.
https://jrstan.basu.ac.ir/article_1917_924fed9d8c264974ea50d9026d453b36.pdf
2017-03-01
43
53
10.22084/jsa.2017.12630.1014
Dual frequency ultrasonic transducer
High power ultrasonic
FEM simulation
Ultrasonic cleaning
A.
Pak
a.pak@basu.ac.ir
1
Mechanical Engineering Department, Faculty of Engineering, Bu-Ali Sina University, Hamedan, Iran.
AUTHOR
A.
Abdullah
abdullah.amir@gmail.com
2
Department of Mechanical Engineering, Amirkabir University of Technology, Tehran, Iran
AUTHOR
[1] L. Shuyu, Study on the multifrequency Langevin ultrasonic transducer, Ultrasonics, 33(6) (1995) 445-448.
1
[2] Y.R. Yeon-bo Kim, New design of matching layers for high power and wide band ultrasonic transducers, Sensor. Actuator., 71 (1998) 116-122.
2
[3] L. Parrini, Design of advanced ultrasonic transducers for welding devices, IEEE Trans. Ultrason., Ferroelect., Freq. Control., 48(6) (2001) 1632-1639.
3
[4] B. Dubus, G. Haw, C. Granger, O. Ledez, Characterization of multilayered piezoelectric ceramics for high power transducers, Ultrasonics, 40 (2002) 903-906.
4
[5] H.L.W. Chan, M.W. Ng, P.C.K. Liu, Effect of hybrid structure (1/3 composite and ceramic) on the performance of sandwich transducers, Mat. Sci. Eng., B99 (2003) 6-10.
5
[6] S. Saitoh, M. Izumi, Y. Mine, A dual frequency ultrasonic probe for medical applications, IEEE Trans. Ultrason. Ferroelectr. Freq. Control, 42 (1995) 294-300.
6
[7] G. Piazza, P.J. Stephanou, A. Pisano, Single-chip multiple-frequency AlN MEMS filters based on contour-mode piezoelectric resonators, J. Microelectromech. Syst., 16 (2007) 319-28.
7
[8] K. Heath Martin, B.D. Lindsey, J. Ma, M. Lee, S. Li, F.S. Foster , X. Jiang, P.A. Dayton, Dualfrequency piezoelectric transducers for contrast enhanced ultrasound imaging, Sensors, 14 (2014) 20825-20842.
8
[9] S. Lin, C. Xu, Analysis of the sandwich ultrasonic transducer with two sets of piezoelectric elements, Smart. Mater. Struct., 17(6) (2008) 6 065008.
9
[10] S. Lin, An improved cymbal transducer with combined piezoelectric ceramic ring and metal ring, Sensor. Actuator., 163(1) (2010) 266-276.
10
[11] S. Lin, L. Xu, H. Wenxu, A new type of high power composite ultrasonic transducer, J. Sound. Vib., 330(7) (2011) 1419-1431.
11
[12] S¸. Deniz, The design of a multi-frequency underwater acoustic transducer with cylindrical piezoelectric elements, MSc Thesis. Turkey: Middle East Technical University; 2011.
12
[13] T. Asami, H. Miura, Longitudinaltorsional vibration source consisting of two transducers with different vibration modes, JPN. J. Appl. Phys., 55 (2016) 7-8.
13
[14] J.W. Rayleigh, The Theory of Sound, New York, 1945.
14
[15] K.F. Graff, Wave Motion in Elastic Solids, Oxford University Press, 1975.
15
[16] R.G. Grimes, J.G. Lewis, H.D. Simon, A shifted block lanczos algorithm for solving sparse systematic generalized eigenproblems, Siam. J. Matrix. Anal. Appl., 15 (1994) 228-272.
16
[17] Piezoelectric Ceramics for High Power Applications data sheet, TAMURA CO., 2006.
17
[18] G.W. Taylor., J.J. Gagnepain, Piezoelectricity, New York: Gordon and Breach Science, 4 (1960).
18
ORIGINAL_ARTICLE
Failure Mechanism and Ultimate Strength of Friction Stir Spot Welded Al-5052 Joints under Tensile-shear Loading
In this paper failure mechanism of a joint which was welded by friction stir spot welding method was studied. The 5052 aluminum joint was loaded under tensile-shear condition.To find out failure mechanism, several tests were conducted such as: strain-stress, macrography, and Vickers hardness. Results of strain-stress test state the stages of failure and crack initiation and propagation. Macrography analysis was done in several stages with different penetration depths. It was shown that the material flow, the critical surface of the coupon, and the determined zones were more possible to generate crack. Finally, by using Vickers hardness test, the susceptible zones to crack generation and propagation can be specified.
https://jrstan.basu.ac.ir/article_1918_18b8f51e9ddbcc159e4b61a449a76008.pdf
2017-03-01
55
61
10.22084/jsa.2017.12922.1020
FSSW
Failure mechanism
analysis
tensile-shear load
M.H.
Salimi
mhsalimi92@yahoo.com
1
Mechanical Engineering Department, K.N. Toosi University of Technology, Tehran, Iran.
AUTHOR
M.
Assadollahi
morteza_assadollahi@yahoo.com
2
Mechanical Engineering Department, K.N. Toosi University of Technology, Tehran, Iran.
AUTHOR
S.
Nakhodchi
snakhodchi@kntu.ac.ir
3
Mechanical Engineering Department, K.N. Toosi University of Technology, Tehran, Iran.
LEAD_AUTHOR
[1] D. Kim, Resistance spot welding of aluminum alloy sheet 5J32 using SCR type and inverter type power supplie, Mat. Sci. Eng., 38 (2009) 55-60.
1
[2] L. Han, M. Thornton, M. Shergold, A comparison of the mechanical behaviour of self-piercing riveted and resistance spot welded aluminium sheets for the automotive industry, Mater. Design., 31 (2010) 1457-1467.
2
[3] A. Gean, Static and fatigue behavior of spot-welded 5182-0 aluminum alloy sheet, Weld. J., 78 (1999) 80-88.
3
[4] Y. Tozaki, Y. Uematsu, K. Tokaji, Effect of tool geometry on microstructure and static strength in friction stir spot welded aluminium alloys, Int. J. Mach. Tool. Manu., 47 (2007) 2230-2236.
4
[5] Y. Uematsu, K. Tokaji, Comparison of fatigue behaviour between resistance spot and friction stir spot welded aluminium alloy sheets, Sci. Technol. Weld. Joi., 14 (2009) 62-71.
5
[6] D. Choi, Formation of intermetallic compounds in Al and Mg alloy interface during friction stir spot welding, Intermetallics, 19 (2011) 125-130.
6
[7] A. Gerlich, P. Su, T. North, Tool penetration during friction stir spot welding of Al and Mg alloys, J. Mater. Sci., 40 (2005) 6473-6481.
7
[8] K. Muci-K¨ uchler, S. Kalagara, W.J. Arbegast, Simulation of a refill friction stir spot welding process using a fully coupled thermo-mechanical FEM model. J. Manuf. Sci., 132 (2010) 145-155.
8
[9] M. Bilici, A.I. Ykler, Influence of tool geometry and process parameters on macrostructure and static strength in friction stir spot welded polyethylene sheets. Mater. Design., 33 (2012) 145-152.
9
[10] M. Merzoug, Parametric studies of the process of friction spot stir welding of aluminium 6060-T5 alloys. Mater. Design., 31 (2010) 3023-3028.
10
[11] Y. Yin, A. Ikuta, T. North, Microstructural features and mechanical properties of AM60 and AZ31 friction stir spot welds. Mater. Design., 31 (2010) 4764-4776.
11
[12] S. Thoppul, R.F. Gibson, Mechanical characterization of spot friction stir welded joints in aluminum alloys by combined experimental/numerical approaches: Part I: Micromechanical studies. Mater. Charact., 60 (2011) 1342-1351.
12
[13] M. Kurtulmus, Friction stir spot welding parameters for polypropylene sheets. Sci. Res. Essays., 7 (2012) 947-956.
13
[14] S. Jambhale, S. Kumar, S. Kumar, Effect of process parameters & tool geometries on properties of friction stir spot welds: a review, J. Eng. Sci., 3 (2015) 6-11.
14
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