Wybrane zagadnienia wytrzymałości połączeń spawanych i klejowych stali konstrukcyjnej S235JR

Rudawska, Anna; Sosnowski, Łukasz

doi:10.7862/rm.2013.5

Cited by 4 publications

(23 citation statements)

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“…The distribution of the shearing stress in bonded joints loaded for shear in relation to the lap : a) lap length is smaller than limit lap length, b) lap length is equal limit lap length, c) lap is bigger than limit lap length; where:  -shear stress, śr -mean shear stress, l1, l2, l3 -lap length, lgr -limit lap length [11,15] he limit lap length determined is the preliminary approximate length assumed for the design sually verified by testing. The following relation (1) can be used to perform analytical ation of the limit lap length of identical elements [11]:…”

Section: Bonded Joint Lap Lengthmentioning

confidence: 99%

“…1. The distribution of the shearing stress in bonded joints loaded for shear in relation to the lap length: a) lap length is smaller than limit lap length, b) lap length is equal limit lap length, c) lap length is bigger than limit lap length; where: t -shear stress, t śr -mean shear stress, l 1 , l 2 , l 3 -lap length, l gr -limit lap length [11,15] a) b) c)…”

Section: Bonded Joints Testedmentioning

confidence: 99%

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Influence of the Thickness of Joined Elements on Lap Length of Aluminium Alloy Sheet Bonded Joints

Rudawska

2015

Adv. Sci. Technol. Res. J.

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This work features the results of experimental research in determining the limiting length of the bonded single-lap joint of materials of the same thickness, different thicknesses and of hybrid systems of different aluminium alloy sheets. The length of the bonded lap joint is just one of the structural features, critical to the strength of bonded joints, this length depending on the thickness and type of the bonded elements. In the case of single-lap bonded joints there is a limiting lap length exceeding of which should not increase the strength of such joints. This is why the length of a bonded lap joint is critical in terms of strength and application concerns. The length of the lap is not always reflected in practice due to simplification of the analytical relations. What is required is experimental verification of the derived theoretical relations. The tested materials are aluminium alloy sheets, widely used in the machinery, aviation and construction industries.

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Section: Bonded Joint Lap Lengthmentioning

confidence: 99%

Section: Bonded Joints Testedmentioning

confidence: 99%

Influence of the Thickness of Joined Elements on Lap Length of Aluminium Alloy Sheet Bonded Joints

Rudawska

2015

Adv. Sci. Technol. Res. J.

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“…In physicochemistry, adhesion is one of the most difficult phenomena to define unambiguously. According to [ 1 , 2 , 3 , 4 , 5 ], it is a series of phenomena that may occur at the contact of surfaces of adjacent materials. In Latin, adhesio means adhering, sticking [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

“…According to [ 1 , 2 , 3 , 4 , 5 ], it is a series of phenomena that may occur at the contact of surfaces of adjacent materials. In Latin, adhesio means adhering, sticking [ 3 ]. Nevertheless, such a general definition explains this phenomenon to a very small extent.…”

Section: Introductionmentioning

confidence: 99%

Influence of Epoxy Glue Modification on the Adhesion of CFRP Tapes to Concrete Surface

Szewczak

2021

Materials

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Strengthening structural concrete, steel or wooden elements with reinforcement tapes is currently a popular method of extending the durability of buildings. In the glued joint Carbon Fibre Reinforced Polymer (CFRP) tape-concrete substrate, the most critical element is the adhesive layer connecting both materials. The glued joint participates in the transfer of stresses between the reinforced element and the reinforcement tape. Among the numerous analyses of this type of joint, the work resulting from the action of shear stresses (shearing) is considered most frequently, which also results from the originally developed computational models emerging with the development of research on the processes of adhesive effectiveness. The subsequent theories considered the share of other stresses, which is also related to the complex nature of the phenomenon of glue adhesion on various surfaces. Research shows the possibility of modifying the adhesion of the glue by altering its composition and the target surface of application. The study contains the results of research on the possibility of changing the adhesion of the glue to a concrete surface prepared by grinding and sandblasting. The selected epoxy resin has been modified by using the additives of microsilica and carbon nanotubes. Effective mixing of ingredients was achieved due to the use of sonication in the mixing process. Then, the adhesives prepared in this way were used to stick fragments of CFRP tape to concrete surfaces: cleaned, ground and sandblasted. A modified version of the pull-off test was used to determine the effectiveness of adhesion the CFRP tapes to concrete. The results are the final stage summarizing a series of studies including other parameters affecting the bonding efficiency and durability of adhesive bonds.

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“…However, acid-resistant stainless steel belongs to a group of resisting adhesive materials. The effectiveness of adhesive depends mainly on the choice of appropriate adhesive and application of the relevant surface preparation technologies [8,14,15]. Surface preparation for bonding various materials is different [2,12].…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis of Welded and Adhesive Joints Strength Made of Acid-Resistant Stainless Steel Sheets

Rudawska¹,

Pawlak²,

Miturska³

et al. 2017

Adv. Sci. Technol. Res. J.

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Acid resistant steel is a material with interesting properties. They are used in many industries, especially in: chemical, food, aerospace, machine-building, refinery -petrochemical (parts of: pumps, valves, bolts, automatics) as well as in the construction of dairy equipment and brewing (fittings, pumps, valves), architectural (facades lining, window frames, interior design). Wide spectrum use of this material makes the assembly process of elements made of acid-re- Research Article COMPARATIVE ANALYSIS OF WELDED AND ADHESIVE JOINTS STRENGTH MADE OF ACID-RESISTANT STAINLESS STEEL SHEETS ABSTRACTThe article presents the selected results of strength tests on the effectiveness of bonding high-alloy steel 1.4310. Sheet steel is one of the materials that are difficult to activate energy. Effective joining of it is difficult, requires selection of the appropriate bonding technology. The paper focuses on the comparative tests of shear strength of one-single lap welded and bonded joints. The welding process was performed on 3 groups of samples TIG welding and argon, where the variable value of the welding process was current: 60A, 70A, 80A. The adhesion process was performed in 6 groups of samples which differed in the method of surface preparation and the type of the adhesive. Adhesive joints were made by using adhesive of epoxy resin and a hardener: Epidian 61/TFF at a mass ratio of 100:22 and Epidian 61/IDA at a mass ratio of 100:40. As a way of surface preparation applied 3 different, but simplified and environmentally friendly methods of surface preparation: degreasing with using cleaner Loctite 7061, abrasive machining with P320 and degreasing and grinding with abrasive T800 and degreasing were used. Make joints and curing the adhesive joints were carried out at ambient temperature. Analyzed the joints were tested destructive -which set out the shear strength, in accordance with DIN EN 1465 on the testing machine Zwick / Roell Z150. Based on the results of the research it was found that better results were obtained for the maximum welded joints, but this result was similar to the maximum value of the strength of the adhesive bond.

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Wybrane zagadnienia wytrzymałości połączeń spawanych i klejowych stali konstrukcyjnej S235JR

Cited by 4 publications

References 0 publications

Influence of the Thickness of Joined Elements on Lap Length of Aluminium Alloy Sheet Bonded Joints

Influence of the Thickness of Joined Elements on Lap Length of Aluminium Alloy Sheet Bonded Joints

Influence of Epoxy Glue Modification on the Adhesion of CFRP Tapes to Concrete Surface

Comparative Analysis of Welded and Adhesive Joints Strength Made of Acid-Resistant Stainless Steel Sheets

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