Wszystkie pola: adhesive joint - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: About mechanical joints design in metal - composite structure
Autorzy:: Puchała, K.
Szymczyk, E.
Jachimowicz, J.
Powiązania:: https://bibliotekanauki.pl/articles/246795.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: mechanical joint
adhesive joint
FEA
aviation
Opis:: Riveting is still one of the main joining methods of thin-walled aircraft structures. Such features as simplicity of implementation, possibility of two different material connection (e.g. metallic with non-metallic ones) and the fact that is it a well-known (reliable) method causes popularity of riveting. The never-ending attempt to obtain as low mass as possible (mainly to reduce fuel consumption) is the reason for using material of high specific strength in the aerospace industry. High strength titanium or aluminium alloys (e.g. 2024T3) and composite laminates (e.g. CFRP or Glare) are examples of such materials. The article deals with methods of connecting various materials. The paper presents advantages and disadvantages of different/selected connection types. Strength prediction and failure modes of mechanical joints are described for metallic as well as for composite components. Composites are complex materials having an anisotropic structure (and anisotropic mechanical properties) leading to various failure mechanisms. Main principles for appropriate joint design of composite laminate panels (laminate configuration and typical/specific geometrical dimensions) are indicated/specified. The bearing failure mechanism is accepted to be a safe progressive one. Mechanism of bearing (generally compressive) load transfer into composite laminates by shear of the matrix is analysed. Some examples of improvement bearing strength of laminates are presented according to literature. On the base of presented examples and bearing load transfer analysis, some conclusions for an appropriate solution of this problem are drawn.
Źródło:: Journal of KONES; 2012, 19, 3; 381-390
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The influence of selected adhesive properties and the manner of surface preparation upon impact strength of block adhesive joints
Autorzy:: Komorek, A.
Godzimirski, J.
Powiązania:: https://bibliotekanauki.pl/articles/243591.pdf
Data publikacji:: 2018
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: adhesive joint
impact strength
adhesive properties
Opis:: The research described in this article is part of investigating impact strength in block adhesive joints. The authors checked experimentally the effect, on the test results, of the manner of surface preparation and compressive strength and Young’s modulus of an adhesive used to make the connection. The experimental testing was carried out with an impact pendulum tool, designed to examine adhesive joints. During such testing, the energy used to tear off the upper part of the specimen, that is the energy lost by the dropping device, is the measure of the impact strength of an adhesive connection. The elements of the samples were made with an aluminum alloy 2017A. In the investigations, the authors used non-normative samples whose upper element was a cylinder rather than a cuboid, as advised in the norm. The adhesive joints were made using epoxy adhesive Loctite, named EA 3421, or an adhesive composition Epidian 57 with Z1 hardener. The glued elements were prepared by treating the surfaces for bonding by means of the stream-abrasive processing. The abrasive mediums were three types of materials of different gradation. In addition, two series of samples were prepared using roughening by sandpaper. For control samples, the authors made joints, in which the surfaces for bonding became degreased merely by petroleum ether. The results of the experimental studies indicate that the impact strength of adhesive joints is dependent on the manner of preparation of the bonded elements as well as on the longitudinal modulus of elasticity of the adhesive, which was used to make the connection.
Źródło:: Journal of KONES; 2018, 25, 4; 463-469
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Adhesive bonded hot dip zinc coated sheet and titanium sheet joint strength - numerical analysis
Autorzy:: Rudawska, A.
Dębski, H.
Powiązania:: https://bibliotekanauki.pl/articles/248038.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: adhesive joint
finite elements method (FEM)
adhesive joints strength
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.
Źródło:: Journal of KONES; 2012, 19, 1; 339-345
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Research of selected technological factors influence on adhesive-bonded joint properties
Autorzy:: Cypko, E.
Kowalczyk, S.
Powiązania:: https://bibliotekanauki.pl/articles/245874.pdf
Data publikacji:: 2015
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: machine engines
adhesive-bonded joints
technological factors
regenerating adhesive composites
Opis:: The polymer-matrix composites have been applied to regeneration of machine elements since many years. Their proprieties as well as range of using are known generally. However, no exact comparative data about technological factors influence on the adhesive-bonded joints properties, especially the influence of surface preparation. Authors in view of the wide possibilities of the use of such composites in the repair of machinery and equipment, the issue of assessing the impact of technological factors on the properties of adhesive joints made in this work. In this paper was presented the results of adhesive-bonded joints researches depending on the preparation of adhesive material and the surface condition of jointed elements. The tests were selected most often used adhesive material. Based on these results it can be stated that the composition of the adhesive composition and condition of the surface preparation jointed elements have a significant influence on the properties of connections. It is noted considerable variation bonding strength between various variants of the state of the surface. The composition of the adhesive has a significant effect on the properties of the connection. Deficiency and excess hardener content in weight reduces the adhesive strength of the adhesive connection.
Źródło:: Journal of KONES; 2015, 22, 1; 75-82
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Fatigue strength investigation of bonded joints
Autorzy:: Gieleta, R.
Derewońko, A.
Powiązania:: https://bibliotekanauki.pl/articles/243427.pdf
Data publikacji:: 2007
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: adhesive bonded joint
fatigue strength
non-linear analysis
Opis:: Numerous advantages of the bonded joints result in wide application in the aircraft, motor industry or powertrain components. These types of joints enable joining materials with different mechanical properties (e.g. Stiffness) and dimensions without structure change. Proper joint design limits the field of local stress concentrations or even eliminates them. The structural integrity of complete structure depends on the fatigue estimation of the bonded joint. Application of the finite element method to life prediction of the double lap bonded joint metal-composite-metal is presented. Three dimensional numerical models are generated by professional engineering software tools. The contact problem is modelled between the epoxy resin and metal and composite surfaces. A laminated composite consists of the epoxy woven carbon prepreg. Elasto-plastic materials models of the adhesion and metal and orthotropy composite model allowed determining the contact normal stress in the interfaces in each deformation increment which is induced by an external load. MSC.Marc was used to determine the strain and stress distribution in the double lap bonded joint including contact normal stress in the steel/adhesive and laminated composite/adhesive interfaces. Two numerical models of the double lap bonded joint were compared. The use of the presented method is more suitable for structure optimisation than numerical analysis.
Źródło:: Journal of KONES; 2007, 14, 3; 177-186
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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