Impact study of single stage and multi stage abrasive machining on static strength of lap adhesive joints of mild steel

Rudawska, Anna; Miturska, Izabela

doi:10.1051/matecconf/201824402006

Cited by 5 publications

(9 citation statements)

References 14 publications

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“…In the present work, increasing the ratio of valley depth to tip height as a result of changing the abrasive grain size, as evidenced by changes in the surface roughness parameters Ra, Rp, Rt and Rv, has a beneficial effect on the strength of adhesive joints. Rudawska et al [33] indicated that the properties of adhesive surfaces obtained after abrasive treatment with coated tools affect the strength of adhesive joints, and also indicated that the abrasive grain size significantly affects the strength of adhesive joints.…”

Section: Discussionmentioning

confidence: 99%

“…The occurrence of this type of defects could be due to the impact of large abrasive grains. However, it should be noted that the use of abrasive paper made it possible to obtain, in all cases, an undirected distribution of irregularities, which is advantageous when preparing the surface for the adhesive process [19].…”

Section: Surface Roughness and Topography Testsmentioning

confidence: 99%

“…A common method of preparing the surface of materials for bonding is abrasive processing. The most common tools used for this are coated abrasives [19][20][21]. The advantage of this type of tool is the convenience of use, relatively low cost and high availability.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Surface Abrasive Treatment on the Strength of Galvanised Steel Sheet Adhesive Joints

Miturska¹,

Rudawska²

2022

Adv. Sci. Technol. Res. J.

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The aim of this study was to determine the eff ect of abrasive treatment as a method of surface preparation on the strength of adhesive joints made of galvanised steel sheet. The subject of experimental investigations were adhesive joints of samples made of galvanised steel sheet DX51, 0.7 mm thick. The surfaces of the samples were abraded with coated abrasive tools of grain sizes P120, P180, P220, P400 and P600, and then degreased with PIK-KO extraction solvent. The surface properties in terms of roughness and 3D surface topography were examined using a Hommel-Etamic T8000 RC120-400. The adhesive joints were made using Epidian 53 epoxy resin adhesive composition and IDA curing agent in a 100:40 weight ratio. Samples of single-lap adhesive joints were tested for strength on a Zwick/Roell Z150 testing machine, in accordance with the PN -EN 1465:2009 standard. The tests showed that the samples mechanically processed with an abrasive tool of P220 gradation show the best strength properties. Adhesive joints, in which the surface of the joined elements was mechanically processed with an abrasive tool of P120 gradation, obtained negative results. The obtained test results were subjected to further statistical analysis. The Shapiro-Wilk test was used to assess the normality of the distribution. Then, the non-parametric Kruskal-Wallis test and the median test were applied, which showed that there were no signifi cant diff erences in the results obtained between the adhesive joints whose surfaces were prepared with P220 and P400 abrasive paper, i.e. both methods of surface preparation can be considered as the most favourable among those analysed during the adhesive bonding of DX51 galvanised sheets.

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Section: Discussionmentioning

confidence: 99%

Section: Surface Roughness and Topography Testsmentioning

confidence: 99%

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Effect of Surface Abrasive Treatment on the Strength of Galvanised Steel Sheet Adhesive Joints

Miturska¹,

Rudawska²

2022

Adv. Sci. Technol. Res. J.

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“…The next step in the surface preparation process, after machining, was degreasing the surface. Degreasing is one of the most frequently used surface preparation operations performed just before the joining process, because it removes all kinds of dust and grease impurities, often remaining after previous processing [14,19]. Degreasing of steel sheet surfaces intended for bonding was carried out with technical acetone by spraying three times.…”

Section: Methods Of Steel Sheet Surface Preparationmentioning

confidence: 99%

Impact of Adhesive Type and Abrasive Wear Used in the Surface Preparation Process on the Strength of Steel Sheet Adhesive Joints

Miturska¹,

Rudawska²,

Doluk³

et al. 2022

TiAM

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The aim of the paper was to present issues related to the determination of the influence of selected technological factors: the method of surface preparation and type of adhesive on the strength of adhesive joints made of steel sheet C45. As a method of surface preparation the process of shot-blasting with the use of three types of abrasives differentiated in terms of the degree of its wear was used. The adhesive bonds were made with the use of two two-component epoxy adhesive compositions based on Epidian 57 epoxy resin and PAC and Z-1 curing agents combined with the resin in the recommended proportions. The measurements of roughness and topography of surfaces prepared for the bonding process were also carried out. After the curing process, strength tests of adhesive bonds were performed on the Zwick/Roell 150 testing machine, according to PN-EN 1465 standard. It was noted, among others, that with increasing wear of the abrasive used in the surface preparation process, the value of adhesive bonds strength decreased and the higher strength of adhesive bonds was characterized by adhesive joints made with Epidian57/Z-1/100:10 adhesive. The obtained results were subjected to statistical analysis.

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“…Among the mechanical treatments, sandblasting is recommended and is the most favorable, while the coarse-grained abrasive cloth method is the least favorable. During sandblasting, it is to the use of an aluminium oxide, silicon carbide, and a quartz as the abrasives which is recommended due to their irregular shape and the sharp edges, making them effective in imparting a certain roughness to the treated surface [ 47 , 50 , 51 ]. Abrasives in the form of glass beads, porcelain beads, or metal shot should not be used on aluminium and its alloys, as they only cause surface crushing [ 52 ].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Sandblasting Process Parameters of Aerospace Aluminium Alloy Sheets on Adhesive Joints Strength

2021

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In this study, the influence of sandblasting process parameters as a surface preparation method on the strength of single-lap adhesive joints of EN AW 2024 T3 aerospace aluminium alloy sheets was determined. Eleven sets of sandblasting parameters were used, which were determined according to a determined experimental plan. The variable factors in the sandblasting process were pressure, nozzle distance, and workpiece displacement speed. The sand jet incidence angle was constant. Garnet 80 E+ was the abrasive material that was used. The joints were made using an epoxy adhesive composition of Epidian 5 epoxy resin and a PAC curing agent. The influence of the surface preparation method on the surface roughness and contact angle to determine the surface free energy was evaluated. The shear strength of the adhesive joints was also determined, which finally allowed the evaluation of the applied surface treatment variants. The obtained results were subjected to statistical analysis, which indicated that the highest shear strength of the adhesive joints was obtained for samples whose surfaces were treated by sandblasting at parameter configurations in which the pressure was 5–6 × 105 Pa; the distance between the nozzle and the sandblasted surface should not be greater than 97 mm, and the speed at which the workpiece moves in relation to the nozzle should not be greater than 75 mm/min.

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Impact study of single stage and multi stage abrasive machining on static strength of lap adhesive joints of mild steel

Cited by 5 publications

References 14 publications

Effect of Surface Abrasive Treatment on the Strength of Galvanised Steel Sheet Adhesive Joints

Effect of Surface Abrasive Treatment on the Strength of Galvanised Steel Sheet Adhesive Joints

Impact of Adhesive Type and Abrasive Wear Used in the Surface Preparation Process on the Strength of Steel Sheet Adhesive Joints

The Influence of Sandblasting Process Parameters of Aerospace Aluminium Alloy Sheets on Adhesive Joints Strength

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