scholarly journals Influence of surface integrity on bonding process

2011 ◽  
Vol 57 (No. 4) ◽  
pp. 153-162 ◽  
Author(s):  
M. Müller
Keyword(s):  
Surface Integrity ◽  
Adhesive Bonding ◽  
Bonding Process ◽  
Bonded Joints ◽  
Shot Blasting ◽  
Liquid Motion ◽  
Mechanical Preparation ◽  
Bonded Joint ◽  
Bonding Technology ◽  
Joint Quality

Adhesive bonding technology is successfully applied partly in the primary production, partly in the renovation in various fields of human activities. This fact emphasizes the importance of the partial factors research, which influence is essential for the quality, reliability and necessarily the usable life of bonded joints. The mechanical preparation of bonded surface is a varied process which influences directly the resultant bonded joint quality. The aim of the bonded surface mechanical preparation is the adhesion improvement in the adhesive – adherend interface. For mechanical preparation we use tools of defined cutting edge, by means of which we get the uniform surface texture, e.g. by milling. On the contrary such methods are more often used when the uniform surface cannot be reached. Shot blasting and grinding are significant representatives of these methods. The manual grinding can be significantly applied mainly in the agriculture. The absence of connected areas availability for the mechanical tooling and impossibility of their work clamping are the reasons for that. The breakwater in the sprinkler cistern restricting the liquid motion is the example.

scholarly journals Technological and constructional aspects affecting bonded joints

2008 ◽  
Vol 53 (No. 2) ◽  
pp. 67-74 ◽  
Author(s):  
M. Müller ◽  
R. Chotěborský ◽  
J. Krmela
Keyword(s):  
Bond Strength ◽  
Laboratory Experiments ◽  
Adhesive Bonding ◽  
Adhesive Bond ◽  
Bonded Joints ◽  
Metallic Materials ◽  
Very Old ◽  
Number Of Factors ◽  
Bonding Technology ◽  
Adhesive Bond Strength

Adhesive bonding is one of many materials connecting methods. In the last ten years periods the bonding technology noted a boom almost in all industrial branches. The use of bonding technology in the engineering and repairing industry brings considerable savings. Saving in costs, in critical metallic materials and in time are reached and the decrease of the joint weight, too. Therefore the bonding technology pertains to the modern jointing methods even though it is a very old technique. The adhesive bonding technology is influenced by a number of factors which affect the adhesive bond strength. Correcting coefficients have to be considered in construction calculations too. The correcting coefficients correct the strength deviations caused by particular factors. In the paper there are published laboratory experiments results.

Adhesive Bonding

2020 ◽  
pp. 1-25
Keyword(s):  
Adhesive Bonding ◽  
Adhesive Bond ◽  
Bonding Process ◽  
Manufacturing Processes ◽  
Adhesive Bonds ◽  
Different Types ◽  
Bonding Technology ◽  
Basic Concepts

This chapter presents the application of adhesive bonding technology with a long tradition of use in manufacturing processes. It has an established position among a number of different ways of permanently joining elements together. This work offers a list of many advantages of this technology, alongside the difficulties and limitations in the use of adhesive bonds. The basic concepts of adhesives and their components are described, and the terms related to the bonding process are presented. Attention was paid to the great variety of adhesives and many different criteria of their division and selection to a particular technological situation. In the following chapter, examples of the application of different types of adhesives with regard to using materials and constructions can be found as well as methods and requirements for the preparation of the finished adhesive. Mechanisms of the formation of an adhesive bond are characterized, and various constructions of adhesive bonds that are necessary to form a durable bond of elements are presented.

The Effect of Different Methods of Modification on the Surface Properties and on the Finale Strength of Bonded Joints of Selected Types Thermoplastics

2017 ◽  
Vol 1142 ◽  
pp. 188-193
Author(s):  
Martin Bednarik ◽  
David Manas ◽  
Miroslav Manas ◽  
Ales Mizera ◽  
Martin Reznicek ◽  
...  
Keyword(s):  
Contact Angle ◽  
Surface Properties ◽  
Adhesive Bonding ◽  
Lower Surface ◽  
Beta Radiation ◽  
Bonded Joints ◽  
Wide Range ◽  
Bonded Joint ◽  
Almost All ◽  
Contact Angle Of Wetting

In this study there was compared the effect of different methods of modification (modification by plasma treatment and ionizing beta radiation) on the surface properties (contact angle of wetting and surface free energy) and on the final strength of bonded joints of selected types thermoplastics (low density polyethylene and polycarbonate). At the present time bonding has spread into almost all sectors of practice and it would be very difficult to find an industry in which there is no need to use this technology of joining a wide range of materials. Generally, for the formation of quality bonded joint it is important to wet the adhesive bonding surface well. Wettability is characterized by the contact angle of wetting. The liquid has to have a lower surface energy than the solid in order to be able to wet the solid substance.

Adhesive Bonding Technology at Car - Body Structure – Application of New Coating with Layer Zn/Mg

2015 ◽  
Vol 818 ◽  
pp. 23-26
Author(s):  
Michaela Kolnerová ◽  
Jiří Sobotka ◽  
Pavel Solfronk ◽  
Lukáš Zuzánek
Keyword(s):  
Adhesive Bonding ◽  
Body Parts ◽  
Bonded Joints ◽  
Body Structure ◽  
Car Body ◽  
New Type ◽  
Bonding Technology ◽  
The Individual ◽  
Body Production ◽  
Coated Sheet

The paper deals with the application possibilities of new coatings types on the basis of Zn/Mg and their utilization at car-body production Comparison is done by evaluation bonded joints strength acc. to ISO 11339 for commonly used zinc-coated sheet at production car-body stampings (HDG Z100) with layer of new type on the basis of zinc/magnesium (ZM). Such utilization of new materials also means necessity to carry out test of the individual bonded car-body parts utility properties, mainly at peel loading, in dependence on adhesive type simultaneously with regard to the lubricant which is used in the technological process drawing of stampings and temperature under which is joint loaded. To guarantee required joints quality is one of the crucial criterions for applications new types of coatings in mass production.

scholarly journals Evaluation of factors influencing adhesive bond strength

2012 ◽  
Vol 52 (No. 1) ◽  
pp. 30-37 ◽  
Author(s):  
M. Müller ◽  
P. Hrabě ◽  
R. Chotěborský ◽  
D. Herák
Keyword(s):  
Manufacturing Industry ◽  
Cost Savings ◽  
Adhesive Bond ◽  
Industrial Applications ◽  
Bonded Joints ◽  
Affecting Factors ◽  
Epoxy Adhesives ◽  
Bonded Joint ◽  
Successful Design ◽  
Bonding Technology

In the last ten years periods the bonding technology noted a great boom not only in manufacturing industry but in repairing industry, too. The expansion of chemical industry is the cause of this boom. In this way the use of bonding technology in industrial applications brings considerable cost savings. For the successful use of adhesives the knowledge of used adhesives and of further affecting factors is important. Respecting of this know-how is the presumption of the bonded joint successful design. The breaking of the technological procedure and the incorrect design are very often reasons of wrong joints. The paper contains theoretical in formation about the bonded joints creation and some results of laboratory tests inquiring into the reasons which affect the bonded joint strength. For tests the two-component epoxy adhesives were used.

Influence of Ionizing Beta Radiation on the Surface Energy and Strength of Bonded Joints (at an Elevated Temperature) of Thermoplastic Material

2015 ◽  
Vol 752-753 ◽  
pp. 378-381
Author(s):  
Martin Bednarik ◽  
David Manas ◽  
Miroslav Manas ◽  
Michal Stanek ◽  
Jan Navratil ◽  
...  
Keyword(s):  
Elevated Temperature ◽  
Surface Energy ◽  
Adhesive Bonding ◽  
Lower Surface ◽  
Beta Radiation ◽  
Bonded Joints ◽  
Adhesive Properties ◽  
Adhesion Properties ◽  
Measurement Results ◽  
Bonded Joint

In this study there was found that ionizing beta radiation increased the strength of bonded joints and improved the adhesion properties of polycarbonate (PC). Bonded joints at elevated temperature (60 °C) were tested. Generally, for the formation of quality bonded joint it is important to wet the adhesive bonding surface well. Wettability is characterized by the contact angle of wetting. The liquid has to have a lower surface energy than the solid in order to be able to wet the solid substance. The measurement results indicated that ionizing beta radiation was a very effective tool for improvement of adhesive properties and increased the strength of bonded joints of PC at elevated temperature (60 °C). Bonded surfaces with ionizing beta radiation doses of 0, 33, 66, 99, 132, 165 and 198 kGy were irradiated. The best results were achieved by irradiation at doses of 66 kGy by which the highest surface energy and the highest strength of bonded joints of PC were achieved. The strength of bonded joints after irradiation was increased up to 10 % and surface energy up to 30 % compared to untreated material.

scholarly journals Degradation medium of agrocomplex – adhesive bonded joints interaction

2012 ◽  
Vol 58 (No. 3) ◽  
pp. 83-91 ◽  
Author(s):  
M. Müller ◽  
P. Valášek
Keyword(s):  
Adhesive Bonding ◽  
Adhesive Layer ◽  
Adhesive Bond ◽  
Bonded Joints ◽  
Technology Application ◽  
Degradation Processes ◽  
Current Interaction ◽  
Bonding Technology ◽  
Degradation Medium ◽  
Adhesive Bonded Joints

Research of degradation medium occurring in agrocomplex at the current interaction with bonded joints strength and lifetime is desired owing to the possibilities of bonding applications in this dynamically developing field. The bonding technology is used in construction of machines, lines and devices of agriculture, forestry and food industry. Among the perspectives of bonding technologies the adhesive bonding can be considered thanks to its predominant pluses. At the bonding technology or more precisely adhesive bonding technology application the limits must be characterized, which occur in the process of application in the concrete medium. On the basis of characteristics and analyses the countermeasures eliminating the negative factors can be taken. Published results set themselves the goal to know degradation processes taking place in bonded joints contemporarily with taking account of adhesive/adherend interaction with accent on application in agriculture. Experimentally found results confirm the presumption of a significant portion of the adhesive layer on the adhesive bond strength decrease in the practice due to the degradation processes.

scholarly journals INFLUENCE OF AGEING ON RIVET‐BONDED JOINT PROPERTIES

Aviation ◽  
2005 ◽  
Vol 9 (2) ◽  
pp. 24-28
Author(s):  
Petr Kachlík ◽  
Josef Klement
Keyword(s):  
Thermal Cycling ◽  
Adhesive Bonding ◽  
Hydraulic Fluid ◽  
Bonded Joints ◽  
Polyurethane Adhesive ◽  
Hybrid Joining ◽  
Joining Technology ◽  
Joint Properties ◽  
Bonded Joint ◽  
Aircraft Engineering

Riveting and adhesive bonding are common joining technology in aircraft engineering. A hybrid joining such as rivet‐bonding brings together the benefits of both basic techniques whilst minimising some of their shortcomings. These technologies have been present mastered sufficiently, and their characteristics are well known. Due to different influences in aircraft service (weather, location of aircraft operation, air composition, contact with fuel or hydraulic fluid), a degradation of the characteristics of joints is well noticed. This research was focused on the ageing of rivet‐bonded joints with a polyurethane adhesive and blind rivets and the influence of ageing on the properties of joints. Ageing according EN 2243–5 was carried out in hot/wet conditions, salt mist, hydraulic fluid, and fuel. Thermal cycling was used as a resource of ageing.

Strength of Bonded Joints of Polypropylene after Radiation Cross-Linking

2015 ◽  
Vol 1120-1121 ◽  
pp. 1167-1170
Author(s):  
Martin Bednarik ◽  
David Manas ◽  
Miroslav Manas ◽  
Michal Stanek ◽  
Jan Navratil ◽  
...  
Keyword(s):  
Surface Energy ◽  
Adhesive Bonding ◽  
Lower Surface ◽  
Beta Radiation ◽  
Bonded Joints ◽  
Adhesive Properties ◽  
Adhesion Properties ◽  
Measurement Results ◽  
Bonded Joint ◽  
Contact Angle Of Wetting

In this study there was found that ionizing beta radiation increased the strength of bonded joints and improved the adhesion properties of polypropylene (PP). Generally, for the formation of quality bonded joint it is important to wet the adhesive bonding surface well. Wettability is characterized by the contact angle of wetting. The liquid has to have a lower surface tension than the solid in order to be able to wet the solid substance. The measurement results indicated that ionizing beta radiation was a very effective tool for the improvement of adhesive properties and increased the strength of bonded joints of polypropylene. Bonded surfaces with ionizing beta radiation doses of 0, 33, 66 and 99 kGy were irradiated. The best results were achieved by irradiation at dose of 66 kGy by which the highest surface energy and the highest strength of bonded joints of PP were achieved. The strength of bonded joints after irradiation was increased up to 450 % compared to untreated material. A similar trend was observed even for surface energy.

Effect of Beta Irradiation on the Strength of Bonded Joints of HDPE

2013 ◽  
Vol 586 ◽  
pp. 79-82 ◽  
Author(s):  
Martin Bednarik ◽  
David Manas ◽  
Martin Ovsik ◽  
Miroslav Manas ◽  
Michal Stanek ◽  
...  
Keyword(s):  
Contact Angle ◽  
Adhesive Bonding ◽  
Lower Surface ◽  
New Combination ◽  
Bonded Joints ◽  
Solid Substance ◽  
Wide Range ◽  
Bonded Joint ◽  
Almost All ◽  
Contact Angle Of Wetting

At the present time bonding has spread into almost all sectors of practice and it would be very difficult to find an industry in which there is no need to use this technology of joining a wide range of materials. In comparison with conventional joining methods (riveting, welding and screwing) provides bonding new combination of options and allows obtaining special shapes and properties which cannot be created by conventional methods of coupling. For the formation of quality bonded joint it is important that the adhesive bonding surface is well wetting. Wettability is characterized by the contact angle of wetting. The liquid must have a lower surface tension than the solid in order to be able to wetting the solid substance. This article describes the effect of beta irradiation on the contact angle of wetting, on the surface energy and on the final strength of bonded joints of HDPE.

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