Effect of combined loads on the durability of a stiffened adhesively bonded composite structure

1995 ◽  
Author(s):  
Pascal Gotsis ◽  
Christos Chamis ◽  
Levon Minnetyan
Keyword(s):  
Composite Structure ◽  
Adhesively Bonded ◽  
Combined Loads ◽  
Bonded Composite

scholarly journals Ultrasonic Guided Wave Signal Based Nondestructive Testing of a Bonded Composite Structure Using Piezoelectric Transducers

Signals ◽  
2021 ◽  
Vol 2 (1) ◽  
pp. 13-24
Author(s):  
Kaleeswaran Balasubramaniam ◽  
Shirsendu Sikdar ◽  
Piotr Fiborek ◽  
Pawel H. Malinowski
Keyword(s):  
Nondestructive Testing ◽  
Composite Structure ◽  
Impact Damage ◽  
Spectral Element ◽  
Guided Wave ◽  
Adhesively Bonded ◽  
Full Field ◽  
Ultrasonic Guided Wave ◽  
Bonded Composite ◽  
Good Agreement

This paper presents ultrasonic guided wave (UGW) propagation-based nondestructive testing (NDT) of an adhesively bonded composite structure (ACS). In the process, a series of scanning laser Doppler vibrometry (SLDV)-based laboratory experiments and time-domain spectral element method (SEM)-based numerical simulations were carried out on an ACS with barely visible impact damage (BVID) and a hole. A good agreement was observed between the numerical and experimental UGW signals in the cases studied. Finally, a full-field and elliptical signal processing method-based NDT strategy was proposed that uses differential damage features of the registered UGW signals to identify different types of BVIDs in the ACS.

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.

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

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.

Effect of joint flexibility in adhesively bonded composite panel-to-flange joints

1998 ◽  
Vol 29 (3) ◽  
pp. 287-298 ◽  
Author(s):  
L. Tong ◽  
A. Sheppard ◽  
D. Kelly ◽  
P. Chalkley
Keyword(s):  
Composite Panel ◽  
Adhesively Bonded ◽  
Joint Flexibility ◽  
Bonded Composite
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