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.

Multi-objective Optimization of UV Spot Curing Technique of Slider - Suspension Attachment Process Using Response Surface Methodology Approach

2021 ◽  
Author(s):  
Santi Pumkrachang
Keyword(s):  
Response Surface Methodology ◽  
Shear Strength ◽  
Response Surface ◽  
Process Parameters ◽  
Epoxy Adhesive ◽  
Quadratic Model ◽  
Uv Curable ◽  
Multi Objective ◽  
Validation Experiment ◽  
Cure Time

The ultraviolet (UV) curing of slider-suspension attachment is going to change from a manual to an automated process. As a result, the bonding parameters of adhesive between slider and suspension needs to be optimized. This paper aims to study two output responses of the UV curable epoxy adhesive i.e., shear strength force and pitch static attitude (PSA) of the joint between slider and suspension in a head gimbal assembly (HGA). Four process parameters were investigated using response surface methodology (RSM) based on face-centered central composite design (FCCD). The RSM was applied to establish a mathematical model to correlate the significance of process parameters and the responses. Then the based multi-objective was applied to determine a quadratic model and obtained the output maximization at 224 g of shear strength force and PSA value close to the target at 1.8 degrees. The input process parameters were optimized at 0.7 s of UV bottom cure time, 120 °C of UV dual side temperature, 5.0 s of UV dual side cure time, and 230 μm of adhesive dot size. The validation experiment showed a prediction response error of less than 7% of the actual value.

Effect of different carbon nano-fillers on rheological properties and lap shear strength of epoxy adhesive joints

2016 ◽  
Vol 82 ◽  
pp. 53-64 ◽  
Author(s):  
Panta Jojibabu ◽  
M. Jagannatham ◽  
Prathap Haridoss ◽  
G.D. Janaki Ram ◽  
Abhijit P. Deshpande ◽  
...  
Keyword(s):  
Shear Strength ◽  
Rheological Properties ◽  
Epoxy Adhesive ◽  
Adhesive Joints ◽  
Lap Shear Strength ◽  
Lap Shear

On the effect of pulsed laser ablation on shear strength and mode I fracture toughness of Al/epoxy adhesive joints

2015 ◽  
Vol 29 (17) ◽  
pp. 1820-1830 ◽  
Author(s):  
Giovanni Chiodo ◽  
Marco Alfano ◽  
Stefano Pini ◽  
Alessandro Pirondi ◽  
Franco Furgiuele ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Shear Strength ◽  
Laser Ablation ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Epoxy Adhesive ◽  
Adhesive Joints ◽  
Mode I ◽  
Mode I Fracture ◽  
Mode I Fracture Toughness

Effects of Process Parameters on Tensile Shear Strength of Friction Stir Spot Welded Aluminium Alloy (EN AW 5005)

2014 ◽  
Vol 59 (1) ◽  
pp. 221-224 ◽  
Author(s):  
M.K. Kulekci
Keyword(s):  
Shear Strength ◽  
Aluminium Alloy ◽  
Process Parameters ◽  
Dwell Time ◽  
Tensile Shear Strength ◽  
Tensile Shear ◽  
Friction Stir ◽  
Tool Pin ◽  
Tool Rotation ◽  
Spot Welded

Abstract Aluminium and its alloys have been used in automotive technology since the first model of the car. The need for aluminium material is getting increased for weight reduction, improved fuel economy and vehicle performance. The amount of the aluminium used in a car is mainly related with joining processes of aluminium alloy. This can be achieved by developing the welding techniques for aluminium alloys. The purpose of this study was to determine the effects of friction stir spot welding parameters on tensile shear strength of friction stir spot welded lap joint EN AW 5005 Aluminium alloy. The variable parameters were tool rotation (rpm), dwell time (s) and the tool pin height (mm). Tensile shear test results indicated that the weld performance was significantly affected by the tool rotation, dwell time and the tool pin height. The results of the study indicates that there are optimum process parameters which give the highest tensile shear strength.

scholarly journals Influence of Surface Treatment on Steel Adhesive Joints Strength—Varnish Coats

Materials ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 6938
Author(s):  
Anna Rudawska ◽  
Izabela Miturska-Barańska ◽  
Elżbieta Doluk
Keyword(s):  
Shear Strength ◽  
Surface Treatment ◽  
Epoxy Adhesive ◽  
Adhesive Joints ◽  
Steel Sheets ◽  
Lower Shear ◽  
Cyanoacrylate Adhesive ◽  
Strength Tests ◽  
The Impact ◽  
Iso 25178

The purpose of the paper is to determine the impact of surface treatment on the strength of adhesive joints, made from various steel sheets. Two variants of the surface treatment steel adherends were used: without the varnish coat and with the varnish coat, using three polymer-based varnishes (a simple, a hybrid, and a gel). Two types of the adhesives were used to prepare the adhesive joints: a single-component cyanoacrylate adhesive and a two-component epoxy adhesive. A strength test of the adhesive joints (EN DIN 1465 standard), a coating adhesion test (ASTM D3359-B standard), and surface topography, as well as surface roughness, parameters (PN-EN ISO 11562, PN-EN ISO 4287, and PN-EN ISO 25178 standards) were used. Based on the strength tests, it was observed that the adhesive joints, with the hybrid varnish onto the adherend’s surface, achieved markedly lower shear strength. The best results, in terms of the adhesive joint strength, made using the cyanoacrylate adhesive were achieved for the joints where the adherends were coated with a simple varnish, while in the joints made using the epoxy adhesive, the highest shear strength was achieved by the joints of sheets whose surfaces were coated with the gel varnish.

Statistical Investigation of the Effect of Process Parameters on the Shear Strength of Metal Adhesive Joints

2016 ◽  
Vol 98 (3) ◽  
pp. 335-342 ◽  
Author(s):  
Goribidanur Rangappa Rajkumar ◽  
Munishamaih Krishna ◽  
Hebbale Narayanrao Narasimhamurthy ◽  
Yalanabhalli Channegowda Keshavamurthy
Keyword(s):  
Shear Strength ◽  
Process Parameters ◽  
Statistical Investigation ◽  
Adhesive Joints
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