Repair of automotive bumpers and bars with modified friction stir welding

Abstract

This study reports the investigations for repair of thermoplastic based automotive bumpers and bars with modified friction stir welding (MFSW) process. For MFSW, consumable tool of polyamide6 (PA6) composite has been used for joining of acrylonitrile butadiene styrene (ABS) composites. The dissimilar thermoplastics were processed for maintaining a useful range of melt flow properties followed by preparation of feed stock filament for fused deposition modeling (FDM) process through screw extrusion. Finally, 3D printed PA6 based consumable rapid tool (RT) was prepared for MFSW. The joints prepared were subjected to flexural, hardness, morphological and thermal testing. The study has suggested the that maximum mechanical strength was obtained for sample welded at 1400 r/min, 50 mm/min transverse speed and 3 mm plunge depth, whereas the minimum mechanical strength was obtained for sample welded at 1000 r/min, 30 mm/min transverse speed and 2 mm plunge depth. The results are also supported with thermal analysis and photomicrographs.

Keywords

dissimilar thermoplastics / flexural properties / modified FSW / thermal imaging

References

[1] VellaiyanS, AmirthagadeswaranK S. Taguchigrey relational-based multi-response optimization of the water-in-diesel emulsification process [J]. Journal of Mechanical Science and Technology, 2016, 30(3): 1399-1404

[2] JeonC S, JeongY H, HongS T, HasanM T, TienH N, HurS H, KwonY J. Mechanical properties of graphite/aluminum metal matrix composite joints by friction stir spot welding [J]. Journal of Mechanical Science and Technology, 2014, 28(2): 499-504

[3] AhmadiH, ArabN M, GhasemiF A. Optimization of process parameters for friction stir lap welding of carbon fibre reinforced thermoplastic composites by Taguchi method [J]. Journal of Mechanical Science and Technology, 2014, 28(1): 279-284

[4] JafariM, AbbasiM, PoursinaD, GheysarianA, BagheriB. Microstructures and mechanical properties of friction stir welded dissimilar steel-copper joints [J]. Journal of Mechanical Science and Technology, 2017, 31(3): 1135-1142

[5] AhnE Y, DasH, HongS T, HanK S, MilesM, LeeK J, ParkJ W, HanH N. Process responses and resultant joint properties of friction stir welding of dissimilar 5083 and 6061aluminum alloys [J]. Journal of Mechanical Science and Technology, 2017, 31(8): 3955-3960

[6] BuffaG, BaffariD, CampanellaD, FratiniL. An innovative friction stir welding based technique to produce dissimilar light alloys to thermoplastic matrix composite joints [J]. Procedia Manufacturing, 2016, 5: 319-331

[7] KumarR, SinghR, AhujaI P S. Melt processing for enhancing compatibility of aluminum-reinforced acrylonitrile–butadiene–styrene and polyamide 6 for friction welding applications [J]. Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2018, 40(8): 378

[8] KumarR, SinghR, AhujaI P S. Investigations of mechanical, thermal and morphological properties of FDM fabricated parts for friction welding applications [J]. Measurement, 2018, 120: 11-20

[9] SimõesF, RodriguesD M. Material flow and thermo-mechanical conditions during friction stir welding of polymers: Literature review, experimental results and empirical analysis [J]. Materials & Design, 2014, 59344-351

[10] AbibeA B, SÔnegoM, Dos SantosJ F, CantoL B, Amancio-FilhoS T. On the feasibility of a friction-based staking joining method for polymer-metal hybrid structures [J]. Materials & Design, 2016, 92: 632-642

[11] GonçalvesJ, Dos SantosJ F, CantoL B, Amancio-FilhoS T. Friction spot welding of carbon fiber-reinforced polyamide 66 laminate [J]. Materials Letters, 2015, 159(15): 506-509

[12] GaoJ, LiC, ShilpakarU, ShenY. Improvements of mechanical properties in dissimilar joints of HDPE and ABS via carbon nanotubes during friction stir welding process [J]. Materials & Design, 2015, 86: 289-296

[13] SlużalecA. Thermal effects in friction welding [J]. International Journal of Mechanical Sciences, 1990, 32(6): 467-478

[14] StokesV K, HobbsS Y. Vibration welding of ABS to itself and to polycarbonate, poly (butylene terephthalate), poly (ether imide) and modified poly (phenylene oxide) [J]. Polymer, 1993, 34(6): 1222-1231

[15] StokesV K. The effect of fillers on the vibration welding of poly (butylene terephthalate) [J]. Polymer, 1993, 34(21): 4445-4454

[16] YilmazM, ÇölM, AcetM. Interface properties of aluminum/steel friction-welded components [J]. Materials Characterization, 2002, 49(5): 421-429

[17] RotundoF, CeschiniL, MorriA, JunT S, KorsunskyA M. Mechanical and microstructural characterization of 2124Al/25 vol.% SiCp joints obtained by linear friction welding (LFW) [J]. Composites Part A: Applied Science and Manufacturing, 2010, 41(9): 1028-1037

[18] PanneerselvamK, LeninK. Joining of Nylon 6 plate by friction stir welding process using threaded pin profile [J]. Materials & Design, 2014, 53: 302-307

[19] FaesK, DhoogeA, de BaetsP, van der DoncktE, de WaeleW. Parameter optimisation for automatic pipeline girth welding using a new friction welding method [J]. Materials & Design, 2009, 30(3): 581-589

[20] Amancio-FilhoS T, BuenoC, Dos SantosJ F, HuberN, HageJ E. On the feasibility of friction spot joining in magnesium/fiber-reinforced polymer composite hybrid structures [J]. Materials Science and Engineering A, 2011, 528(10): 3841-3848 11

[21] KUMAR R, SINGH R, AHUJA I S, KARN K N. Joining of 3D printed dissimilar thermoplastics with friction welding: A case study [J]. Encyclopedia of Renewable and Sustainable Materials, 2019. DOI: https://doi.org/10.1016/B978-0-12-803581-8.11530-9.

[22] BangH S, DasA, LeeS. Friction stir lap joining of automotive aluminium alloy and carbon-fiber-reinforced plastic [J]. IOP Conference Series: Materials Science and Engineering, 2018, 369(1): 012033

[23] ATTALLAH M M, PREUSS M. Inertia friction welding (IFW) for aerospace applications [J]. Welding and Joining of Aerospace Materials, 2012: 25–74.

[24] RaabU, LevinS, WagnerL, HeinzeC. Orbital friction welding as an alternative process for blisk manufacturing [J]. Journal of Materials Processing Technology, 2015, 215189-192

[25] HaghshenasM, GerlichA P. Joining of automotive sheet materials by friction-based welding methods: A review [J]. Engineering Science and Technology, An International Journal, 2018, 21(1): 130-148

[26] GharahshiranM R, KhoshakhlaghA, KhalajG, BakhtiariH, BanihashemiA R. Effect of postweld heat treatment on interface microstructure and metallurgical properties of explosively welded bronze— Carbon steel [J]. Journal of Central South University, 2018, 25(8): 1849-1861

[27] YilmazI O, BiliciA Y, AydinH. Microstructure and mechanical properties of dissimilar resistance spot welded DP1000-QP1180 steel sheets [J]. Journal of Central South University, 2019, 26(1): 25-42

[28] YusofN S, SapuanS M, SultanM T, JawaidM. Conceptual design of oil palm fibre reinforced polymer hybrid composite automotive crash box using integrated approach [J]. Journal of Central South University, 2020, 27(1): 64-75

[29] KumarD, MuthukumaranS, XavierV, VenkateswaranT, SivakumarD. Investigation of weld parameters on ductility, onion ring and fracture behaviour of friction stir welded AA2219-T87 [J]. Journal of Central South University, 2019, 26(9): 2318-2327

[30] YangX W, FengW Y, LiW Y, ChuQ, XuY X, MaT J, WangW B. Microstructure and mechanical properties of dissimilar pinless friction stir spot welded 2A12 aluminum alloy and TC4 titanium alloy joints [J]. Journal of Central South University, 2018, 25(12): 3075-3084

[31] AminiK, GharaviF. Corrosion behavior of dissimilar copper/brass joints welded by friction stir lap welding in alkaline solution [J]. Journal of Central South University, 2019, 26(6): 1573-1581

[32] SadighM A, MaramiG, PaygozarB. Failure simulation in resistance spot-welded lap-joints using cohesive zone modeling [J]. Journal of Central South University, 2018, 25(11): 2567-2577