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.

The Effect of Geometry and Material Properties on the Load Capacity of Single-Strapped Adhesive Bonded Joints

2008 ◽  
Vol 399 ◽  
pp. 89-96 ◽  
Author(s):  
Marin Sandu ◽  
Adriana Sandu ◽  
Dan Mihai Constantinescu ◽  
Ştefan Sorohan
Keyword(s):  
Adhesive Bonding ◽  
Load Capacity ◽  
Dissimilar Materials ◽  
Adhesive Layer ◽  
Adhesive Bond ◽  
Bonded Joints ◽  
Adhesively Bonded ◽  
Adhesive Bonded Joints ◽  
Major Factors ◽  
Selection Of

Adhesive bonding is a particularly effective method of assembling complex structures, especially those made from dissimilar materials. If the joint is well designed and correctly executed, the adhesive bond ought to be one of the strongest components of the structure and most certainly should not be the reason for reducing the load capacity or fatigue life. The major factors determining the integrity of an adhesive bond are selection of the most appropriate adhesive, joint design, preparation of the bonding surfaces, strict quality control in production and monitoring in service. This work focuses on the evaluation of the load capacity of some configurations of adhesively bonded single-strapped joints based on finite element analyses. The adhesive layer thickness, the overlap length, the adherent and strap thicknesses were varied as well as the materials properties.

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.

scholarly journals Tests of Technological Conditions of the Resistance Welding and Adhesive Bonding of Coated Steel Sheets

2021 ◽  
pp. 17-30
Author(s):  
Szymon Kowieski ◽  
Jolanta Matusiak
Keyword(s):  
Isopropyl Alcohol ◽  
Adhesive Bonding ◽  
Protective Coatings ◽  
Adhesive Layer ◽  
Organic Coating ◽  
Epoxy Adhesive ◽  
Bonded Joints ◽  
Technological Parameters ◽  
Steel Sheets ◽  
Adhesive Bonded Joints

The article presents the effect of welding technological parameters and adhesive bonding conditions (surface processing, overlap dimensions and the thickness of the adhesive layer) on the formation of hybrid (welded-adhesive bonded) joints of steel sheets provided with protective coatings. The tests involved the joining of sheets made of steel HC340LA. The sheets made of steel HC340LA (provided with a ZE50/50 Granocoat ZE two-layer organic coating) were in the as-received state and after cleaning with isopropyl alcohol. The tests also involved sheets made of steel 22MnB5 provided with an AlSi coating. The sheets made of steel 22MnB5 were subjected to heat treatment, cleaning with isopropyl alcohol, roughening and etching in similar configurations. The adhesive bonding process was performed applying one-component epoxy adhesive (used in the automotive industry).

Non-Destructive Evaluation of Composite Adhesive Kissing Bond

2013 ◽  
Author(s):  
Yingtao Liu ◽  
Joel Johnston ◽  
Aditi Chattopadhyay
Keyword(s):  
Structural Integrity ◽  
Adhesive Bond ◽  
Image Correlation ◽  
Bonded Joints ◽  
Hydraulic Test ◽  
Ultrasonic Methods ◽  
Non Destructive Evaluation ◽  
Test Frame ◽  
Adhesive Bonded Joints ◽  
Non Destructive

Adhesive bonded joints have been increasingly employed in aerospace, automotive, and other mechanical systems due to the advantages of uniform stress distribution, less stress concentration, light in weight, etc. However, the early damage stage of the adhesive bond joints, which are usually named as kissing bond, can significantly impact the structural integrity and safety. Kissing bond is difficult to detect and identify using current non-destructive evaluation (NDE) techniques since there is no clearly gap or interface between the bond area. Attempts using advanced ultrasonic methods have reached limited success, but more reliable methods need to be developed before adhesive joints can be more widely applied to the engineering field. This paper focuses on the development of detection method using digital image correlation (DIC) technique. Three types of adhesive kissing bond joint samples were fabricated using different contamination recipe to simulate the kissing bonds. The performance of the fabricated joint samples were tested using uniaxial hydraulic test frame and the detection capability of DIC system was investigated. The noncontact strain field measurement method using DIC can indicate the existence of kissing bonds with limited load. The results of DIC measurement is encouraging and can be further used for the NDE estimation of mechanical properties of the kissing bond.

Stress/Strain Behaviour of Mechanical and Adhesive Joints in Timber Façade Applications

2020 ◽  
Vol 868 ◽  
pp. 142-149
Author(s):  
Barbora Nečasová ◽  
Liška Pavel ◽  
Michal Novotný
Keyword(s):  
Adhesive Layer ◽  
Adhesive Bond ◽  
Solid Wood ◽  
Bonded Joints ◽  
Large Format ◽  
Strain Behaviour ◽  
Mechanical Fasteners ◽  
Adhesive Connections ◽  
Failure Loads ◽  
Pressure Suction

This paper compares the stress and strain behaviour of mechanical fasteners and elastic adhesive connections in timber façade applications. Two common designs with timber cladding are introduced. The traditional façade planks and multilayer large-format solid wood panels were selected. The resistance of a reference façade section with mechanical fasteners or adhesive bond to wind suction is determined according to the recommendations of European guideline ETAG 034. The pressure/suction chamber allowing hermetic closure was used. The sample deformation was measured at 15 locations, this also allowed to determine the elongation of the adhesive layer at break. The failure loads reached with the adhesive joint exceeded 20 kN/m2 in both combinations of façade cladding. On the other hand, the sample with a large-format panel and mechanical fasteners showed the lowest failure load at 12 kN/m2. The results confirmed that bonded joints are a suitable solution for large-format cladding, whereas an increase in the number of mechanical fasteners will be a more convenient solution for façade plank applications.

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.

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.

Parametric optimization for rehabilitation of pipes with adhesive bonding

2019 ◽  
Vol 32 (5) ◽  
pp. 588-599
Author(s):  
Syam Kumar Chokka ◽  
B Satish Ben ◽  
KV Sai Srinadh
Keyword(s):  
Hydrostatic Pressure ◽  
Adhesive Bonding ◽  
Surface Preparation ◽  
Adhesive Layer ◽  
Adhesive Bond ◽  
Optimization Of Process Parameters ◽  
Cfrp Composite ◽  
Hole Defects ◽  
Pressure Resistance ◽  
Structural Adhesive

This work deals with the optimization of process parameters for rehabilitation of the pipe through-wall hole defects using adhesive bonding. Epoxy-based nonstructural adhesive (NSA) and structural adhesive (SA) combination, precure temperature, bond length, and surface preparation were considered as the parameters. The optimization of parameters directly on pipes is an expensive and time-consuming process. Hence, stainless steel and carbon fiber-reinforced polymer (SS-CFRP) composite single-strap joint was considered. The equivalent loads that were acting during the hydrostatic pressure test were applied to the SS-CFRP joint and its parametric effect on bond strength was studied. The stress distribution along the adhesive layer length has been derived analytically. The surface roughness of prebond surfaces was measured using a 3-D microscope. The quality of the adhesive bond was evaluated using nondestructive testing (digital radiography). The damaged pipe was rehabilitated with optimized parameters and its hydrostatic pressure resistance was tested according to ISO/TS 24817 standards. From the results, it is observed that the rehabilitated pipe with optimized parameters was able to sustain a maximum of 79% of its allowable pressure.

scholarly journals Influence of Adhesive in FSW: Investigation on Fatigue Behavior of Welded, Weld-Bonded, and Adhesive-Bonded Joints in Aluminum AA 6082 T6

Materials ◽  
2019 ◽  
Vol 12 (8) ◽  
pp. 1242 ◽  
Author(s):  
Enrico Lertora ◽  
Chiara Mandolfino ◽  
Marco Pizzorni ◽  
Carla Gambaro
Keyword(s):  
Dynamic Behavior ◽  
Adhesive Bonding ◽  
Fatigue Behavior ◽  
Surface Preparation ◽  
Experimental Tests ◽  
Bonded Joints ◽  
Friction Stir ◽  
Negative Effect ◽  
Aeronautical Industry ◽  
Adhesive Bonded Joints

Friction stir welding (FSW) is a solid-state technique, which has assumed an increasingly important role in automotive, naval, and aeronautical industry over the years. Nowadays, thanks to its several benefits, FSW is used to weld any type of metallic, polymeric, or composite material. In recent decades, adhesive bonding has also enhanced relevance due to a request for much lighter structures to increase performance without increasing fuel consumption. From a mechanical perspective, welding has a high tensile strength despite a low fatigue resistance through the lack of joint elasticity. Therefore, the aim of this study is to investigate and compare static and dynamic behavior of welded, weld-bonded, and adhesive-bonded joints. After choosing the most suitable adhesive, surface preparation, consisting of sandblasting, was carried out. First of all, on the basis of previous experience in FSW, the process parameters of hybrid welding were determined. Both quasi-static and dynamic behavior of welded, adhesive-bonded, and weld-bonded joints, made in overlapped configuration, were then compared. Experimental tests showed that the adhesive limits the negative effect, due to the presence of the structural notch of FSW overlapped joints.

Sign in / Sign up

Export Citation Format

Share Document