Material and surface condition influence on adhesive strength of the adhesive joint at shear

Adhesive joints are widely used in mechanical engineering when using composite structures and polymer coatings. This makes it possible to reduce weight of the structure and increase its corrosion resistance. The most important indicator in the adhesive joint performance is the adhesive strength. Theoretical solutions to determine adhesive strength of such connections is missing. The adhesive joint shear strength was experimentally studied. An assumption was made that the main factors influencing strength included materials of the glued surfaces and their physical and mechanical state. Fiberglass and steel, respectively, were selected as the reinforcing material and the base material. The surfaces were exposed to turning, priming, sanding and chemical treatment. Dependences were obtained of the adhesive joint adhesive strength on the polymer layer and surface roughness sickness for two types of the adhesive compositions. It was established that adhesive strength increased with the growing surface roughness. When applying primers to the surfaces, shear strength of the adhesive joint decreased. After chemical treatment of the surface with acid solution, shear strength of the adhesive joint increased.

References

[1] Petrova A.P., Lukina N.F., Isaev A.Yu. Means to improve the elastic characteristics of epoxy adhesives and efficiency of adhesive joints on their basis. Klei. Germetiki. Tekhnologii, 2020, no. 5, pp. 14–19. (In Russ.). (Eng. version: Polym. Sci. Ser. D, 2020, vol. 13, no. 4, pp. 391–396, doi: https://doi.org/10.1134/S1995421220040164)

[2] Danilov A.I., Kalugin I.A. Strengthening elements of steel structures using adhesive joints. Inzhenernyy vestnik Dona [Engineering journal of Don], 2021, no. 2, pp. 364–370. (In Russ.).

[3] Ignatov A.V., Vinokurova M.E. Innovative method of assembly of adjustable cylindrical adhesive joints. Sborka v mashinostroenii, priborostroenii, 2017, no. 6, pp. 250–256. (In Russ.).

[4] Reis J.M.L., Menezes E.M., da Costa Mattos H.S. et al. Strength of dissimilar adhesively bonded DCB joints and its connection with the failure pressure of composite repair systems. Compos. Struct., 2023, vol. 304-2, art. 116441, doi: https://doi.org/10.1016/j.compstruct.2022.116441

[5] Ascione F., Granata L. Mechanical models for predicting the strength and stiffness of a beam-to-column adhesively-bonded connection between pultruded profiles. Structures, 2022, vol. 43, pp. 493–507, doi: https://doi.org/10.1016/j.istruc.2022.06.063

[6] Kurennov S.S., Koshevoy A.G., Polyakov A.G. Through-thickness stress distribution in the adhesive joint for the multilayer composite material. Izvestiya vysshikh uchebnykh zavedeniy. Aviatsionnaya tekhnika, 2015, no. 2, pp. 10–15. (In Russ.). (Eng. version: Russ. Aeronaut., 2015, vol. 58, no. 2, pp. 145–151, doi: https://doi.org/10.3103/S1068799815020026)

[7] Demeshkin A.G., Kornev V.M., Astapov N.S. Strength of glued composite in the presence of crack-like defects. Mekhanika kompozitsionnykh materialov i konstruktsiy [Mechanics of Composite Materials and Structures], 2013, vol. 19, no. 3, pp. 445–458. (In Russ.).

[8] Benelli A., Ciardiello R., Boursier Niutta C. et al. Experimental and numerical characterization of adhesive joints with composite substrates by means of the Arcan test. Int. J. Adhes. Adhes., 2023, vol. 122, art. 103321, doi: https://doi.org/10.1016/j.ijadhadh.2022.103321

[9] Larson R., Bergan A., Leone F. et al. Influence of stochastic adhesive porosity and material variability on failure behavior of adhesively bonded composite sandwich joints. Compos. Struct., 2023, vol. 306, art. 116608, doi: https://doi.org/10.1016/j.compstruct.2022.116608

[10] Mikhalchenkov A.M., Kozarez I.V., Feskov S.A. et al. Methodology for determining of adhesion strength of polymeric hardening-curing composite materials and adhesive joints. Uprochnyayushchie tekhnologii i pokrytiya [Strengthening Technologies and Coatings], 2021, vol. 17, no. 4, pp. 181–183. (In Russ.).

[11] Koryagin S.I., Buylov S.V., Velikanov N.L. et al. The computational and experimental method of estimating crack resistance of adhesive joints. Izvestiya vysshikh uchebnykh zavedeniy. Mashinostroenie [BMSTU Journal of Mechanical Engineering], 2016, no. 7, pp. 11–18, doi: https://doi.org/10.18698/0536-1044-2016-7-11-18 (In Russ.).

[12] Stukach A.V., Dintser A.I. Investigation of the adhesive strength of polymers. Trudy Krylovskogo gosudarstvennogo nauchnogo tsentra [Transactions of the Krylov State Research Centre], 2021, no. S1, pp. 338–340. (In Russ.).

[13] Fukui N., Okunishi N., Hara N. et al. Atomistic investigation on adhesive strength of coupling agents to aluminum. Int. J. Mech. Sci., 2023, vol. 246, art. 108150, doi: https://doi.org/10.1016/j.ijmecsci.2023.108150

[14] Marchione F. Simplified static shear strength prediction model for adhesively bonded joints assembled with brittle adhesives. Mech. Res. Commun., 2022, vol. 127, art. 104022, doi: https://doi.org/10.1016/j.mechrescom.2022.104022

[15] Rogov V.A., Gorbani S. Applying the Taguchi method to optimize vibration and roughness in machining. Tekhnologiya mashinostroeniya, 2016, no. 6, pp. 11–20. (In Russ.).

[16] Grechishnikov V.A., Pivkin P.M. Modeling the process of roughness forming on a machined part surface depending on cutting tool parameters and shape of part generatrix during mechanical treatment. Vestnik MGTU Stankin [Vestnik MSUT Stankin], 2014, no. 4, pp. 59–66. (In Russ.).

[17] Fomin A.A., Gusev V.G., Timerbaev N.F. The processing of the profile surface of the work-pieces, characterized by low rigidity. Solid State Phenom., 2020, vol. 299, pp. 852–860, doi: https://doi.org/10.4028/www.scientific.net/SSP.299.852

[18] Vasilev V.I., Ovsyannikov V.E., Ziganshin R.A. et al. Peculiar features of formation of surface roughness profile upon mechanical processing of iron parts of handling machines after diffusion alloying. IJMET, 2018, vol. 9, no. 3, pp. 1061–1067.

[19] Sibileva S.V., Karimova S.A. Surface treatment of titanium alloys to provide adhesion properties. Aviatsionnye materialy i tekhnologii [Aviation Materials and Technologies], 2013, no. S2, pp. 25–35. (In Russ.).

[20] Baldan A. Adhesively-bonded joints and repairs in metallic alloys, polymers and composite materials: adhesives, adhesion theories and surface pretreatment. J. Mater. Sci., 2004, vol. 39, no. 1, pp. 1–49, doi: https://doi.org/10.1023/B:JMSC.0000007726.58758.e4

[21] Petrova A.P., Kuznetsova V.A., Lukina N.F. et al. Influence of corrosion inhibiting primer on properties of the glued joints executed using organic silicon glue-hermetic. Trudy VIAM [Proceedings of VIAM], 2020, no. 10, pp. 13–20, doi: https://doi.org/10.18577/2307-6046-2020-0-10-13-20 (In Russ.).

[22] Rudawska A., Elżbieta Bociąga E., Olewnik-Kruszkowska E. The effect of primers on adhesive properties and strength of adhesive joints made with polyurethane adhesives. J. Adhes. Sci. Technol., 2017, vol. 31, no. 3, pp. 327–344, doi: https://doi.org/10.1080/01694243.2016.1215013

[23] Vartanov M.V., Vlasov A.I. Influence of thickness of glutinous layer on strength of connections body panels of cars. Sborka v mashinostroenii, priborostroenii [Assembling in Mechanical Engineering, Instrument-Making], 2008, no. 12, pp. 21–23. (In Russ.).

[24] Kostin V., Nasonov F., Zinin A. Influence of adhesive bond line thickness on joint strength of composite aircraft structures. J. Phys.: Conf. Ser., 2021, vol. 1925, art. 012070, doi: https://doi.org/10.1088/1742-6596/1925/1/012070