Long-term durability in water of aluminium alloy adhesive joints bonded with epoxy adhesives

1997 ◽  
Vol 17 (2) ◽  
pp. 89-105 ◽  
Author(s):  
K.B. Armstrong
Keyword(s):  
Aluminium Alloy ◽  
Adhesive Joints ◽  
Epoxy Adhesives

scholarly journals Cohesive Properties of Environmentally Degraded Epoxy Adhesives

2018 ◽  
Vol 3 (2) ◽  
pp. 49-56
Author(s):  
G. Viana ◽  
M. Costa ◽  
M. D. Banea ◽  
L. F. M. da Silva
Keyword(s):  
Mechanical Behaviour ◽  
Adhesive Joints ◽  
Temperature Dependent ◽  
Factors Affecting ◽  
Fuel Savings ◽  
Epoxy Adhesives ◽  
Cohesive Properties ◽  
High And Low Temperatures ◽  
Structural Adhesive

Adhesives are increasingly being used in the aerospace and automotive industries. They allow for light weight vehicles, fuel savings and reduced emissions. However, the environmental degradation of adhesive joints is a major setback in its wider implementation. Moisture degradation of adhesive joints includes plasticization, attacking of the interface, swelling of the adhesive and consequent creation of residual stresses. The main factors affecting the strength of adhesive joints under high and low temperatures are the degradation of the adhesive mechanical properties and the creation of residual stresses.To model the long term mechanical behaviour of adhesive joints, the temperature and moisture dependent properties of the adhesives must be known. However, few studies focus on the combined moisture and temperature degradation, which difficults the prediction of the long term mechanical behaviour of these joints. In this study the prediction of moisture and temperature dependent cohesive properties of a structural adhesive is analysed.

Long-term peel strength of metal-laminate adhesive joints

Polimery ◽  
1988 ◽  
Vol 33 (07/08) ◽  
pp. 303-305
Author(s):  
JOACHIM ZIMNIAK
Keyword(s):  
Peel Strength ◽  
Adhesive Joints

Interfacial Characteristic Evaluation of Aluminium-Alloy Adhesive Joints by Ultrasonic Spectroscopy

2018 ◽  
Vol 2018 (0) ◽  
pp. OS0220
Author(s):  
Muhamad Azrul Hadi GHAZALI ◽  
Kyota NAKAGAWA ◽  
Shohei ITO ◽  
Naoki MORI ◽  
Takayuki KUSAKA ◽  
...  
Keyword(s):  
Aluminium Alloy ◽  
Adhesive Joints ◽  
Ultrasonic Spectroscopy ◽  
Interfacial Characteristic

Modeling of long-term creep behavior of structural epoxy adhesives

2005 ◽  
Vol 25 (5) ◽  
pp. 427-436 ◽  
Author(s):  
C.-W. Feng ◽  
C.-W. Keong ◽  
Y.-P. Hsueh ◽  
Y.-Y. Wang ◽  
H.-J. Sue
Keyword(s):  
Creep Behavior ◽  
Epoxy Adhesives ◽  
Term Creep

Effect of reinforcements at different scales on mechanical properties of epoxy adhesives and adhesive joints: a review

2018 ◽  
Vol 94 (13) ◽  
pp. 1082-1121 ◽  
Author(s):  
Ali Nemati Giv ◽  
Majid R. Ayatollahi ◽  
S. Hengameh Ghaffari ◽  
Lucas F.M. da Silva
Keyword(s):  
Mechanical Properties ◽  
Adhesive Joints ◽  
Epoxy Adhesives

scholarly journals Mechanical Properties of Selected Epoxy Adhesive and Adhesive Joints of Steel Sheets

2021 ◽  
Vol 2 (1) ◽  
pp. 108-126
Author(s):  
Anna Rudawska
Keyword(s):  
Mechanical Properties ◽  
Epoxy Resin ◽  
Experimental Tests ◽  
Epoxy Adhesive ◽  
Adhesive Joints ◽  
Stoichiometric Ratio ◽  
Curing Agent ◽  
Steel Sheets ◽  
Epoxy Adhesives ◽  
Strength Tests

The article presents the issues of the mechanical properties of epoxy adhesives and the adhesive joints strength of steel sheets which were made using the epoxy adhesives. The aim of the paper is to study the mechanical properties of epoxy adhesive of different epoxy resin/curing agent ratios (within and above the recommended stoichiometric ratio) and their effect on mechanical properties of adhesive joints of steel sheets. In experimental tests three types of epoxy adhesives, containing a low molecular weight epoxy resin based on bisphenol A and polyamide curing agent, were used. A single-lap adhesive joint type of stainless-steel sheets was also applied. Two types of strength test were used: the compressive strength tests (DIN EN 196-1) for epoxy adhesive samples and the shear strength tests (DIN EN 1465) for adhesive joints. Both the analysis of the strength results of the samples of epoxy adhesive and adhesive joints as well as the failure analysis was carried out. On the basis of the results of strength tests it can be stated that the greatest deformation occurred for the samples of epoxy adhesive containing the modified epoxy resin (epoxy number—0.40) and the polyamide curing agent, and the smallest for the samples of epoxy adhesive containing the basic epoxy resin (epoxy number—0.49–0.52) and the polyamide curing agent. The epoxy adhesives with a smaller amount of curing agent were characterized by higher strength. This applies to all analyzed epoxy resins. The same dependences were obtained for the strength of adhesive joints of steel sheets made of the analyzed epoxy adhesive.

scholarly journals The Influence of Sandblasting Process Parameters of Aerospace Aluminium Alloy Sheets on Adhesive Joints Strength

Materials ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6626
Author(s):  
Izabela Miturska-Barańska ◽  
Anna Rudawska ◽  
Elżbieta Doluk
Keyword(s):  
Shear Strength ◽  
Aluminium Alloy ◽  
Process Parameters ◽  
Preparation Method ◽  
Incidence Angle ◽  
Surface Preparation ◽  
Epoxy Adhesive ◽  
Adhesive Joints ◽  
Displacement Speed ◽  
Pressure Nozzle

In this study, the influence of sandblasting process parameters as a surface preparation method on the strength of single-lap adhesive joints of EN AW 2024 T3 aerospace aluminium alloy sheets was determined. Eleven sets of sandblasting parameters were used, which were determined according to a determined experimental plan. The variable factors in the sandblasting process were pressure, nozzle distance, and workpiece displacement speed. The sand jet incidence angle was constant. Garnet 80 E+ was the abrasive material that was used. The joints were made using an epoxy adhesive composition of Epidian 5 epoxy resin and a PAC curing agent. The influence of the surface preparation method on the surface roughness and contact angle to determine the surface free energy was evaluated. The shear strength of the adhesive joints was also determined, which finally allowed the evaluation of the applied surface treatment variants. The obtained results were subjected to statistical analysis, which indicated that the highest shear strength of the adhesive joints was obtained for samples whose surfaces were treated by sandblasting at parameter configurations in which the pressure was 5–6 × 105 Pa; the distance between the nozzle and the sandblasted surface should not be greater than 97 mm, and the speed at which the workpiece moves in relation to the nozzle should not be greater than 75 mm/min.

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