Load capacity of single-lap adhesive joints made of 2024-T3 aluminium alloy sheets after shot peening

AbstractThe goal of the work reported was to determine the influence of selected shot peening parameters on the deflection of the Almen strip and the load capacity of single-lap adhesive joints made of 2-mm-thick aluminium alloy EN AW-2024-T3. Moreover, the research was aimed at checking the possibility of using the Almen strip deflection indicator to predict the load capacity of adhesive joints after shot peening. The analysis was carried out according to Hartley’s PS/DS-P:Ha3 plan. The input factors were the shot peening parameters: treatment time t (60–180 s), ball diameter dk (0.5–1.5 mm) and compressed air pressure p (0.3–0.5 MPa). It has been proved in this work that shot peening treatment of the outer surface of single-lap adhesive joints can be used to strengthen the joint. The maximum increase in the load capacity of the shot peened joints was 33.4%. It was observed that the load capacity of the joints decreases with an increase in the deflection of the Almen strip (in the assumed area of variability of technological parameters). Moreover, the results obtained indicate that the adoption of too intensive treatment, manifested in high values of deflection of the Almen strip, may weaken single-lap adhesive joints.

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The Use of Aluminium for Commercial Vehicle Structures—A Feasibility Study

Proceedings of the Institution of Mechanical Engineers ◽

10.1243/pime_proc_1978_192_009_02 ◽

1978 ◽

Vol 192 (1) ◽

pp. 81-92

Author(s):

B. B. Hundy ◽

S. Broadstock

Keyword(s):

Structural Analysis ◽

Aluminium Alloy ◽

Feasibility Study ◽

Commercial Vehicle ◽

Load Capacity ◽

Typical Case ◽

Extra Cost ◽

Manufacturing Processes ◽

Structural Components

The use of aluminium alloy instead of steel for the structural components of a 32 ton articulated lorry has been examined. The probable manufacturing difficulties have been assessed and shown to be minimal. The savings in weight possible by using aluminium have been calculated from a structural analysis of the cab, tractor chassis and trailer and from this and an assessment of the manufacturing processes the extra cost of manufacturing in aluminium has been determined. A typical case study shows that this extra cost can be easily recovered by utilising the increased load capacity of the vehicle during the first few years of its life.

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Surface Modification Analysis after Shot Peening of AA 7075 in Different States

Materials Science Forum ◽

10.4028/www.scientific.net/msf.768-769.519 ◽

2013 ◽

Vol 768-769 ◽

pp. 519-525 ◽

Cited By ~ 1

Author(s):

Sebastjan Žagar ◽

Janez Grum

Keyword(s):

Residual Stress ◽

Surface Layer ◽

Residual Stresses ◽

Aluminium Alloy ◽

Shot Peening ◽

Fatigue Testing ◽

Stress Profile ◽

Treatment Conditions ◽

Stress Profiles ◽

Compressive Residual Stresses

The paper deals with the effect of different shot peening (SP) treatment conditions on the ENAW 7075-T651 aluminium alloy. Suitable residual stress profile increases the applicability and life cycle of mechanical parts, treated by shot peening. The objective of the research was to establish the optimal parameters of the shot peening treatment of the aluminium alloy in different precipitation hardened states with regard to residual stress profiles in dynamic loading. Main deformations and main residual stresses were calculated on the basis of electrical resistance. The resulting residual stress profiles reveal that stresses throughout the thin surface layer of all shot peened specimens are of compressive nature. The differences can be observed in the depth of shot peening and the profile of compressive residual stresses. Under all treatment conditions, the obtained maximum value of compressive residual stress ranges between -200 MPa and -300 MPa at a depth between 250 μm and 300 μm. Comparison of different temperature-hardened aluminium alloys shows that changes in the Almen intensity values have greater effect than coverage in the depth and profile of compressive residual stresses. Positive stress ratio of R=0.1 was selected. Wöhler curves were determined in the areas of maximum bending loads between 30 - 65 % of material's tensile strength, measured at thinner cross-sections of individual specimens. The results of material fatigue testing differ from the level of shot peening on the surface layer.

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The effect of cataphoretic and powder coatings on the strength and failure modes of EN AW-5754 aluminium alloy adhesive joints

International Journal of Adhesion and Adhesives ◽

10.1016/j.ijadhadh.2018.11.005 ◽

2019 ◽

Vol 89 ◽

pp. 40-50 ◽

Cited By ~ 5

Author(s):

Anna Rudawska ◽

Magd Abdel Wahab

Keyword(s):

Aluminium Alloy ◽

Failure Modes ◽

Adhesive Joints ◽

Powder Coatings

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The effect of technological parameters of shot peening on the surface roughness of 51CrV4 steel

Advances in Mechanics: Theoretical, Computational and Interdisciplinary Issues ◽

10.1201/b20057-23 ◽

2016 ◽

pp. 105-108

Author(s):

M Bucior ◽

L Gałda ◽

F Stachowicz ◽

W Zielecki

Keyword(s):

Surface Roughness ◽

Shot Peening ◽

Technological Parameters

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Investigating the Benefits of Controlled Shot Peening on Corrosion Fatigue of Aluminium Alloy 2024 T351

Shot Peening ◽

10.1002/3527606580.ch34 ◽

2006 ◽

pp. 264-270 ◽

Cited By ~ 1

Author(s):

Sean A. Curtis ◽

Eduardo R. de los Rios ◽

Chris A. Rodopoulos ◽

Jose Solis Romero ◽

Andrew Levers

Keyword(s):

Aluminium Alloy ◽

Corrosion Fatigue ◽

Shot Peening

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ENHANCEMENT OF EXFOLIATION CORROSION RESISTANCE OF ALUMINIUM ALLOY 5083 BY SHOT PEENING

Surface Review and Letters ◽

10.1142/s0218625x19500203 ◽

2018 ◽

Vol 25 (07) ◽

pp. 1950020

Author(s):

A. VINOTH JEBARAJ ◽

L. AJAYKUMAR ◽

C. R. DEEPAK ◽

K. V. V. ADITYA

Keyword(s):

Corrosion Resistance ◽

Aluminium Alloy ◽

Shot Peening ◽

Roughness Parameters ◽

X Ray Diffraction ◽

X Ray ◽

Exfoliation Corrosion ◽

Marine Applications ◽

Textural Changes ◽

Chloride Environment

The present work is an effort to study the influence of shot peening on the exfoliation corrosion behavior of aluminium alloy (AA) 5083. Surface textural changes induced by shot peening was characterized using microstructural and X-ray diffraction analysis. The surface roughness parameters were measured to study the benefits of peening induced surface topography. Further, the hardness survey was carried out to assess the severe plastic deformation on the peened layers. As a result, excellent resistance against exfoliation corrosion was achieved in the chloride environment. Shot peening plays major role in enhancing the corrosion resistance of AA 5083. In the absence of exfoliation attack, the unpeened sample surfaces such as ground, milled, and as received conditions end up with a significant pitting attack. The findings of this work will be useful for the aluminium alloy fabrications involved in the marine applications.

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Fatigue of Unmachined Aluminium Alloy Extrusions

Aeronautical Quarterly ◽

10.1017/s000192590000247x ◽

1962 ◽

Vol 13 (3) ◽

pp. 271-274 ◽

Cited By ~ 1

Author(s):

K. W. Gunn ◽

A. R. Woodward

Keyword(s):

Laboratory Test ◽

Aluminium Alloy ◽

Shot Peening ◽

Copper Alloys ◽

High Strength ◽

Fatigue Properties ◽

Test Pieces ◽

Compressive Stresses ◽

Aluminium Copper ◽

Effect Of Surface

SummaryThe fatigue properties of unmachined extrusions of high-strength aluminium-copper alloys are known to be lower than those of conventional fully-machined test pieces. Work described in this note has shown that the removal of a layer of metal 0·025 in. thick from the surface of B.S. L65-type extrusions results in an increase in fatigue properties to values approaching those obtained from the conventional laboratory test pieces. Because the removal of material from the surface is not always a practical proposition, other methods of improving strength have been examined and the effect of surface compressive stresses has been shown to be beneficial. Sufficient compressive stress can be induced by surface-rolling to increase the fatigue properties to those of conventional specimens, but this method can only be easily applied to round sections and it is suggested that shot-peening or vapour-blasting could be used for more complicated sections.

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Butt Joining of Dissimilar Sheets by Shot Peening

Materials Science Forum ◽

10.4028/www.scientific.net/msf.561-565.843 ◽

2007 ◽

Vol 561-565 ◽

pp. 843-846 ◽

Cited By ~ 3

Author(s):

Yasunori Harada ◽

Makoto Fukunaga ◽

Kenzo Fukaura ◽

Satoru Ujihashi ◽

Yuji Kobayashi

Keyword(s):

Plastic Deformation ◽

Kinetic Energy ◽

Plastic Flow ◽

Shot Peening ◽

Present Method ◽

Joint Strength ◽

Compressed Air ◽

Processing Conditions ◽

Large Plastic Deformation ◽

Notch Geometry

The butt joining of dissimilar sheets using a shot peening process was investigated. Shot peening is a surface treatment and improves the performance of engineering components. In shot peening, the substrate undergoes a large plastic deformation near its surface due to a hit with many shots. Thus, plastic flow characterized by a shear droop occurs at the edge of the substrate due to shot peening. When the dissimilar sheets with the edge of the notch geometry are connected without level difference and shot-peened the connection, the sheets can be joined due to the plastic flow generated by the large plastic deformation during shot peening. In the experiment, a compressed-air-type shot peening machine was employed. The influences of processing conditions on the joining of the dissimilar sheets were examined. The joint strength increased with the kinetic energy of shots. It was found that the present method using shot peening process was effective in joining dissimilar sheets.

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