Failure analysis of adhesively bonded composite joint: an elasto-plastic approach

1993 ◽  
Author(s):  
S. C. Pradhan ◽  
N. N. Kishore ◽  
N. G. R. Iyengar
Keyword(s):  
Failure Analysis ◽  
Adhesively Bonded ◽  
Composite Joint ◽  
Bonded Composite

scholarly journals Interaction of Mixed Mode Loading on Cyclic Debonding in Adhesively Bonded Composite Joints

1987 ◽  
Vol 109 (1) ◽  
pp. 17-21 ◽  
Author(s):  
S. Mall ◽  
M. A. Rezaizadeh ◽  
R. Gurumurthy
Keyword(s):  
Mixed Mode ◽  
Strain Energy ◽  
Strain Energy Release ◽  
Analytical Investigation ◽  
Mode I ◽  
Adhesively Bonded ◽  
Total Strain Energy ◽  
Composite Joint ◽  
Governing Factor ◽  
Bonded Composite

A combined experimental and analytical investigation of an adhesively bonded composite joint was conducted to characterize the fracture mode dependence of cyclic debonding. The system studied consisted of graphite/epoxy adherends bonded with EC 3445 adhesive. Several types of specimens were tested which provided the cyclic debond growth rate measurements under various load conditions: mode I, mixed mode I and II, and almost mode II. This study showed that the total strain-energy-release rate was the governing factor for cyclic debonding.

scholarly journals Defects and uncertainties of adhesively bonded composite joints

2021 ◽  
Vol 3 (9) ◽  
Author(s):  
Sadik Omairey ◽  
Nithin Jayasree ◽  
Mihalis Kazilas
Keyword(s):  
Composite Materials ◽  
Composite Structures ◽  
Production Efficiency ◽  
Adhesive Bonding ◽  
Detection Methods ◽  
Bonded Joints ◽  
Adhesively Bonded ◽  
Adhesively Bonded Joints ◽  
Wide Range ◽  
Bonded Composite

AbstractThe increasing use of fibre reinforced polymer composite materials in a wide range of applications increases the use of similar and dissimilar joints. Traditional joining methods such as welding, mechanical fastening and riveting are challenging in composites due to their material properties, heterogeneous nature, and layup configuration. Adhesive bonding allows flexibility in materials selection and offers improved production efficiency from product design and manufacture to final assembly, enabling cost reduction. However, the performance of adhesively bonded composite structures cannot be fully verified by inspection and testing due to the unforeseen nature of defects and manufacturing uncertainties presented in this joining method. These uncertainties can manifest as kissing bonds, porosity and voids in the adhesive. As a result, the use of adhesively bonded joints is often constrained by conservative certification requirements, limiting the potential of composite materials in weight reduction, cost-saving, and performance. There is a need to identify these uncertainties and understand their effect when designing these adhesively bonded joints. This article aims to report and categorise these uncertainties, offering the reader a reliable and inclusive source to conduct further research, such as the development of probabilistic reliability-based design optimisation, sensitivity analysis, defect detection methods and process development.

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