Temat: adhesive joints - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: The visual method in quality assessment of single-lap adhesive joints
Autorzy:: Rudawska, A.
Stančeková, D
Brzęczek, J.
Tematy:: adhesive joints
visual method
spew fillet
adhesive joints strength; Pokaż więcej
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Powiązania:: https://bibliotekanauki.pl/articles/101944.pdf Link otwiera się w nowym oknie
Opis:: This article presents selected criteria for the quality assessment of single-lap adhesive joints formed on 0.66±0.04 thick hot dip zinc coated sheets with the hot dip zinc coating thickness equal to 18 μm. Three types of epoxy adhesives and three variants of the mass of adhesives were tested (1 g, 2 g and 3 g). The work intended to assess the capacity of the visual method with regard to evaluating joint quality, allowing for the presence and the size of spew fillet, joint dimensions and the effect of spew fillet on adhesive joint strength. The strength of analysed adhesive joints was determined in destructive tests.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The effect of degreasing on adhesive joint strength
Autorzy:: Rudawska, A.
Nalepa, J.
Müller, M.
Tematy:: adhesive joints
strength
surface treatment
degreasing; Pokaż więcej
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Powiązania:: https://bibliotekanauki.pl/articles/102003.pdf Link otwiera się w nowym oknie
Opis:: The paper investigates the effects of degreasing, surface preparation methods in adhesive bonding and con adhesive joint strength. Five types of degreasing agents were used in the study: acetone, extraction naphtha, Ultramyt, Wiko and Loctite 7061. The degreasing operation was performed by three methods: rubbing, spraying and immersion. Strength tests were performed on single-lap adhesive joints of hot-dip galvanized metal sheets made with Loctite 9466 adhesive according to the above variants of surface preparation. The experimental results demonstrate that adhesive joint strength is significantly affected by the applied degreasing agent. Moreover, the method of application of the degreasing agent is crucial, too. The results of strength testing reveal that the most effective degreasing method for hot-dip galvanized metal sheet adhesive joints is spraying using extraction naphtha. Thereby, degreased samples have the highest immediate strength and shear strength. The use of extraction naphtha is also effective in combination with degreasing by rubbing; however, it is not effective when used in combination with immersion, as reflected in the lowest strength results.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: The influence of lap size on shear strength of adhesive joints
Autorzy:: Kubit, A.
Ciecińska, B.
Drozd, K.
Tematy:: adhesive joints
lap size
shear strength; Pokaż więcej
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Powiązania:: https://bibliotekanauki.pl/articles/103051.pdf Link otwiera się w nowym oknie
Opis:: Adhesive joints may be used instead of forced-in joints, welded and riveted joints, soldered and twisted connections. They are characterized by a lot of advantages, thanks to them the adhesive joints are willingly used in manufacturing processes. These advantages include low price of joint, reduction of weight of the final construction, improvement of durability, reliability and quality and improving visual appearance. From this point of view it should be concluded that experimental tests of adhesive joints are grounded. In the paper the results of experimental tests of static shear strength of singlelap joints are presented. These joints are made with two constructive glues. The specimens made from AISI 4130 steel were glued. Their surfaces were prepared in two versions before gluing: grinded with abrasive paper by hand and cleaned by sandblasting. The results were analyzed from variable size of the lap point of view.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Metoda prognozowania wytrzymałości kohezyjnej połączeń klejowych
Method of calculating cohesive strength of adhesive joints
Autorzy:: Godzimirski, J.
Tkaczuk, S.
Tematy:: klej
połączenie klejowe
spoina klejowa
wytrzymałość połączeń klejowych
adhesion
adhesive joints
adhesive layer
strength of adhesive joints; Pokaż więcej
Wydawca:: Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
Powiązania:: https://bibliotekanauki.pl/articles/208457.pdf Link otwiera się w nowym oknie
Opis:: Przedstawiono metodę prognozowania wytrzymałości konstrukcyjnych połączeń klejowych obciążonych na ścinanie, wykorzystującą MES. Omówiono sposób określania właściwości mechanicznych materiałów połączenia klejowego, oraz zasadę tworzenia modeli numerycznych badanych połączeń klejowych. Potwierdzono przydatność zaproponowanej metody do zastosowania w obliczeniach inżynierskich.
The paper presents a method, based on FEA, for calculation of strength of adhesive joints subjected to shearing. Additionally, a method determining mechanical properties of adhesive layers and a rule of numerical modelling of adhesive bonds was proposed.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Comparative analysis of welded and adhesive joints strength made of acid-resistant stainless steel sheets
Autorzy:: Rudawska, A.
Pawlak, P.
Miturska, I.
Stančeková, D.
Chyra, M.
Tematy:: adhesive joints
welded joints
strength
acid resistant steel; Pokaż więcej
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Powiązania:: https://bibliotekanauki.pl/articles/102070.pdf Link otwiera się w nowym oknie
Opis:: The 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.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Numerical analysis fiber metal laminates as adhesively bonded structures
Autorzy:: Godzimirski, J.
Pietras, A.
Tematy:: hybrid laminar composites
adhesive joints
delamination; Pokaż więcej
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Powiązania:: https://bibliotekanauki.pl/articles/248111.pdf Link otwiera się w nowym oknie
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Influence of epoxy resin curing systems and aluminium surface modification on selected properties of adhesive joints
Autorzy:: Szymiczek, M.
Chmielnicki, B.
Tematy:: adhesive joints
composite materials
aging
surface modification; Pokaż więcej
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Powiązania:: https://bibliotekanauki.pl/articles/778101.pdf Link otwiera się w nowym oknie
Opis:: The aim of the present study was to investigate the effect of epoxy resin curing agents and aluminium surface modification on the properties of adhesive joints which were subjected to aging under thermal shock conditions. Composites containing reinforced aramid and carbon fibres with aluminium flat profiles (alloy Al 5754) were tested under shear conditions. Epoxy resin (Araldite LY 1564) with amine curing agents (Aradur 3486, Aradur 3487 and Aradur 3405) was used as a matrix. Composites were made using vacuum-assisted contact lamination. The degree of degradation was assessed on the basis of lap shear strength of adhesive joints in accordance with EN ISO 1465:2009. The research showed that epoxy composite samples based on Aradur 3405 (accelerated aliphatic polyamine) and sanded surface of aluminium presented the best lap shear adhesive strength, because this composite has the largest roughness. The hardness of the used adhesive is slightly increased with the cycle number.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Possibilities of Belzona adhesive joints application for austenitic steel used in ship constructions
Autorzy:: Jurczak, W.
Jurczak, K.
Tematy:: austenitic steel
adhesive joints
shipbuilding
Hysol
Belzona; Pokaż więcej
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Powiązania:: https://bibliotekanauki.pl/articles/102361.pdf Link otwiera się w nowym oknie
Opis:: This paper presents the results of research on adhesive joints durability properties of ship austenitic steel done with the use of the latest adhesives – glues: a composite one from Belzona company, described as 1111 and 1212 as well as a Hysol 9466 adhesive, produced by Hysol. The 1.4301 (304) and 1.3964 (2xx) steels used for shipbuilding were single-lap adhesive joint, with varying degree of edges’ chamfering and offsetting (with a deflection). This type of alternative connections will provide protection and temporary structure’s protection in case of emergency cracking (due to corrosion or an impact) of the examined steel or welded joints of the ship’s construction and hull’s sheathings. The adhesive joints of the tested steel were made in laboratory conditions (according to the technological card) as well as outside the laboratory, hereinafter called as the emergency ones with the use of Belzon 1212. Adhesive joints of 304 and 2xx steel using Hysol 9466 adhesive made in laboratory conditions showed better durability properties than the ones made with the use of Belzona 1111 composite. However, in case of emergency connections the bonding strength as well as the bonding time (hardening) are important factors. The use of the special Belzona 1212 (for wet surfaces) gives a relatively good durability of approx. 20MPa with a much shorter (up to 20 minutes) hardening time and does not require such an accurate surface preparation as the adhesive joints made with the use of Hysol 9466.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Pressure during curing and the strength of 2024, 2017A and 1050 aluminium alloy sheet adhesive joints
Autorzy:: Rudawska, A.
Tematy:: adhesive joints strength
pressure
curing
aluminium alloys; Pokaż więcej
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Powiązania:: https://bibliotekanauki.pl/articles/103193.pdf Link otwiera się w nowym oknie
Opis:: This paper is primarily devoted to one of adhesive curing process parameters – pressure applied during curing, as well as the type of adhesive. The aim of this work is to determine the influence of pressure applied during curing process of aluminium alloy sheet adhesive joints on the strength of adhesive joints formed with two epoxy adhesives: Loctite 9484 and Loctite 9466. Three types of aluminium alloy sheets were tested, namely AW 2024, AW 2017A and AW 1050, applied in many branches of engineering. During formation of adhesive joints, other conditions remained unchanged, and surface preparation operations included mechanical processing and degreasing.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Adhesive bonded hot dip zinc coated sheet and titanium sheet joint strength - numerical analysis
Autorzy:: Rudawska, A.
Dębski, H.
Tematy:: adhesive joint
finite elements method (FEM)
adhesive joints strength; Pokaż więcej
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Powiązania:: https://bibliotekanauki.pl/articles/248038.pdf Link otwiera się w nowym oknie
Opis:: This paper describes a numerical analysis of adhesively bonded hot dip zinc coated sheet and titanium sheet and its comparison with the results of experimental tests. The study aims at presenting a comparative analysis of numerical calculation results with the results of strength test of the joints in question. Numerical simulations are an invaluable extension of experimental tests and, moreover, prove particularly useful at joint designing and analysis stages. The calculations were conducted with ABAQUS Standard software and allowed for the destructive force value obtained in experimental tests. Strength tests were conducted on single-lap adhesive joints for given structural materials; the samples were shear-loaded. The comparison of the results of experimental tests and numerical analysis led us to observe certain inconsistencies in the destructive force values, consequently providing information on the accuracy of a numerical model when compared with the actual model. Geometric model of the analysed single-lap adhesive joint, numerical model of the analysed single-lap adhesive joint, adhesive layer failure criterion description, visualisation of the analysed single-lap joint failure process, visualisation of adhesive joint failure stages of adhesive layer are presented.
Dostawca treści:: Biblioteka Nauki

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