Experimental and numerical investigations into the effect of an interference fit on the fatigue life of double shear lap joints

The aim of this study is to examine the effect of the clearance and interference-fit on the fatigue life of composite lap joints in double shear, 3D finite element simulations have been performed to obtain stress (or strain) distributions around the hole due to interference fit using FEM package, Non-linear contact analyses are performed to examine the effects of the clearance and interference for titanium and composite lap joint. Fatigue tests were conducted for the titanium and composite lap joints with clearance fit and interference fit with 0.5, 1, and 1.5% nominal interference fit levels at different cyclic loads. The results shows that interference fit increases fatigue life compared to clearance fit specimens, the titanium and composite lap joint with 1% interference fit level has the better fatigue life.

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Effect of cold expansion on the fatigue life of Al 2024-T3 in double shear lap joints: Experimental and numerical investigations

Materials & Design (1980-2015) ◽

10.1016/j.matdes.2011.07.024 ◽

2012 ◽

Vol 33 ◽

pp. 185-196 ◽

Cited By ~ 24

Author(s):

T.N. Chakherlou ◽

M. Shakouri ◽

A.B. Aghdam ◽

A. Akbari

Keyword(s):

Fatigue Life ◽

Lap Joints ◽

Cold Expansion ◽

Numerical Investigations ◽

Double Shear ◽

Al 2024

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Experimental and numerical comparison of cold expansion and interference fit methods in improving fatigue life of holed plate in double shear lap joints

Aerospace Science and Technology ◽

10.1016/j.ast.2013.04.006 ◽

2013 ◽

Vol 29 (1) ◽

pp. 351-362 ◽

Cited By ~ 21

Author(s):

T.N. Chakherlou ◽

H. Taghizadeh ◽

A.B. Aghdam

Keyword(s):

Fatigue Life ◽

Lap Joints ◽

Numerical Comparison ◽

Interference Fit ◽

Cold Expansion ◽

Double Shear

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Prediction of fatigue life in cold expanded Al-alloy 2024-T3 plates used in double shear lap joints

Journal of Mechanical Science and Technology ◽

10.1007/s12206-013-0322-5 ◽

2013 ◽

Vol 27 (5) ◽

pp. 1415-1425 ◽

Cited By ~ 12

Author(s):

Hadi Taghizadeh ◽

Tajbakhsh Navid Chakherlou ◽

Afshin Babaei Aghdam

Keyword(s):

Fatigue Life ◽

Lap Joints ◽

Al Alloy ◽

Double Shear

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Effect of bolt tightening on the fatigue behavior of GLARE double shear lap joints

Journal of Composite Materials ◽

10.1177/00219983211003315 ◽

2021 ◽

pp. 002199832110033

Author(s):

B Abazadeh ◽

HR Maleki

Keyword(s):

Fatigue Life ◽

Fatigue Behavior ◽

Fatigue Tests ◽

Lap Joints ◽

Clamping Force ◽

Test Results ◽

Load Range ◽

Double Shear ◽

Aluminum Sheets ◽

Aluminum Alloy 2024

In this paper, the effect of bolt torque tightening has been investigated on the fatigue behavior of GLARE in double shear lap configuration. To do so, experimental fatigue tests were conducted using GLARE3-5/4-0.4 specimens with applied torques of 0 (finger tightened), 2 and 4 Nm at different cyclic longitudinal load ranges to achieve the stress-life (S-N) curves. The results revealed that applying and increasing the clamping force enhances the fatigue life of the GLARE specimens. Furthermore, comparison of fatigue test results of GLARE and available monolithic aluminum alloy 2024-T3 plates indicated when the applied load range is low, the effect of clamping force is more noticeable in GLARE specimens due to longer fatigue crack growth life of GLARE. Also, the occurrence of fretting fatigue didn’t reduce the fatigue life of GLARE specimens considerably in contrary to aluminum sheets because of the laminated structure of GLARE. The obtained results can provide insights in designing bolted GLARE joints with superior fatigue in-service performance.

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