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Hazimeh (2014), finite element analysis of adhesively bonded composite joints subjected to impact loadings.

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Article

Variation of Adhesive Strength in Single Lap Joint (SLJ) with Surface Irregularities

1Department of Mechanical Engineering, MIT-COE, Pune, India


American Journal of Mechanical Engineering. 2019, Vol. 7 No. 2, 61-67
DOI: 10.12691/ajme-7-2-2
Copyright © 2019 Science and Education Publishing

Cite this paper:
Aditya V. Natu, Ankit R. Sharma, Nitinkumar R. Anekar. Variation of Adhesive Strength in Single Lap Joint (SLJ) with Surface Irregularities. American Journal of Mechanical Engineering. 2019; 7(2):61-67. doi: 10.12691/ajme-7-2-2.

Correspondence to: Ankit  R. Sharma, Department of Mechanical Engineering, MIT-COE, Pune, India. Email: adityanatu97@gmail.com, ankit4444.as@gmail.com.com

Abstract

Single Lap Joints are used extensively in the aerospace industry due to their lower weight and absence of stress concentration due to drilled holes. However, their lesser strength remains an important limitation. Different modes of failures have been reviewed in this article. The bond strength of a single lap joint can be varied by varying its overlap length, while, the strength does not strictly increase with increasing bonding length. Rather, it increases up to an optimum value and decreases further. This optimum value was obtained, which is found to be in agreement with previous studies in this regard. The surfaces of the bonded aluminum plates were modified by generating notch shaped pattern on bonding area. Due to notch pattern of bonding, the bond strength increases up to 75° notch angle and then decreases with further increase in the notch angle. The experimental results of bonded joints without notch also were obtained by software analysis. Maximum strength of joint length reached at optimum length and optimum notched surface pattern.

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