Qualifications of Adhesives for Marine Composite-to-Steel Bonded Applications

2009 ◽  
Vol 25 (04) ◽  
pp. 198-205
Author(s):  
George W. Ritter ◽  
David R. Speth ◽  
Yu Ping Yang
Keyword(s):  
Mechanical Property ◽  
Structural Integrity ◽  
Adhesively Bonded ◽  
Load Bearing Capacity ◽  
Property Evaluation ◽  
Marine Industry ◽  
Straightforward Method ◽  
Bonded Composite ◽  
Steel Joints ◽  
Marine Composite

This paper describes a straightforward method for the design and certification of adhesively bonded composite to steel joints for the marine industry. Normally, certification is based on documented service at sea. Since these joints have not been previously deployed at sea, no data on their performance exist. Using an integrated combination of mechanical property evaluation and finite element modeling, the load- bearing capacity of a joint can be compared with the anticipated seaway loads. Calculated factors of safety for the sandwich design used here show that the joint has adequate strength to maintain structural integrity even after severe environmental exposure.

Failure Analysis of an Adhesively Bonded Graphite Composite/Steel Scarf Joint

1978 ◽  
Vol 100 (1) ◽  
pp. 64-69 ◽  
Author(s):  
A. B. Macander ◽  
D. R. Mulville
Keyword(s):  
High Performance ◽  
Structural Integrity ◽  
Strain Energy Release ◽  
Organic Matrix ◽  
Structural Elements ◽  
Adhesively Bonded ◽  
Graphite Composite ◽  
Scarf Joint ◽  
Bonded Composite ◽  
Composite Steel

Recent studies on the use of graphite fiber-organic matrix composites in Naval and commercial high performance ships have demonstrated the potential for significant weight savings and corresponding improvements in ship performance. Unlike conventional materials, structural elements fabricated with advanced composite materials require specialized attention. One area that is critical to the successful development of reliable composite structural elements is joining. This paper describes a method for determining the structural integrity of an adhesively bonded composite/steel scarf joint. An experimentally established failure criterion is presented based on a strain energy release rate formulation, which may be used to predict performance of the scarf joint under tensile loading.

2D FE Modeling of Cracked Aluminum Plates Repaired with Adhesively Bonded Composite Patches

2010 ◽  
Vol 152-153 ◽  
pp. 1024-1030
Author(s):  
Xiao Hua Yang ◽  
Ding Zhang ◽  
Yong Zhang
Keyword(s):  
Mechanical Property ◽  
Fatigue Life ◽  
Fe Model ◽  
Fe Modeling ◽  
Adhesively Bonded ◽  
Bonded Composite ◽  
Aluminum Plates

A 2D FE model of cracked aluminum plates repaired with adhesively bonded composite patches was established in this paper, and then the model was validated by comparing the calculated SIF and fatigue life of repaired structure with existing results. The result shows that the model is accurate enough to be used to analyze the mechanical property of cracked aluminum plates repaired with adhesively bonded composite patches.

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.

scholarly journals Structural integrity of adhesively bonded 3D-printed joints

2021 ◽  
pp. 107262
Author(s):  
Mohammad Reza Khosravani ◽  
Payam Soltani ◽  
Kerstin Weinberg ◽  
Tamara Reinicke
Keyword(s):  
Structural Integrity ◽  
Adhesively Bonded ◽  
3D Printed

An experimental–numerical investigation of hydrothermal response in adhesively bonded composite structures

2015 ◽  
Vol 73 ◽  
pp. 176-185 ◽  
Author(s):  
Roohollah Sarfaraz ◽  
Luis P. Canal ◽  
Georgios Violakis ◽  
John Botsis ◽  
Véronique Michaud ◽  
...  
Keyword(s):  
Numerical Investigation ◽  
Composite Structures ◽  
Adhesively Bonded ◽  
Bonded Composite

Structural Integrity in Merchant Ships

1980 ◽  
Vol 102 (1) ◽  
pp. 15-19 ◽  
Author(s):  
S. T. Rolfe
Keyword(s):  
World War Ii ◽  
Structural Integrity ◽  
Background Information ◽  
World War ◽  
Additional Information ◽  
Marine Industry ◽  
History Of ◽  
Brittle Fractures ◽  
Fracture Control ◽  
Periodic Changes

Since World War II, periodic changes in the fabrication, design, and material specifications for ship steels have been made to preclude brittle fractures. These various changes are described briefly, along with a history of fracture control for ships to serve as background information for a discussion of the present-day structural integrity program for ships in the marine industry. As additional information related to the structural integrity of ship structures, a review of two recent ship failures (e.g., the Ingram Barge in 1972 and the Chester A. Poling in 1977) is presented to demonstrate some of the factors involved in brittle fractures of ships. In both of these failures there were other factors contributing to the final brittle fractures that were more important than the notch toughness levels. These factors are reviewed as the basis for an observation regarding the overall structural integrity of merchant ships.

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