materials-logo

Journal Browser

Journal Browser

Advances in Adhesively Bonded Joints: Testing, Analysis, Design and Application

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Advanced Composites".

Deadline for manuscript submissions: closed (15 December 2024) | Viewed by 9345

Special Issue Editors

College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
Interests: composite machining/joining/repairing; hybrid bolted-bonded joints; joint–structure testing and modeling
School of Mechanical Engineering, Northwestern Polytechnical University, Xi’an 710072, China
Interests: damage mechanism; hybrid bolted-bonded joint; cutting and joining process

E-Mail Website
Guest Editor
School of Mechanical Engineering, Beijing Institute of Technology, Beijing, China
Interests: bonding assembly; precision assembly; multi-physics modelling and simulation
Full Scale Aircraft Structural Static/Fatigue Laboratory, AVIC Aircraft Strength Research Institute of China, Xi’an 710065, China
Interests: composite adhesively bonded joint; damage tolerance; variable–stiffness composite design; multiscale simulation

Special Issue Information

Dear Colleagues,

This Special Issue is entitled “Advances in Adhesively Bonded Joints: Testing, Analysis, Design and Application”, to be published in the journal Materials (ISSN 199601944, IF: 3.748). Dr. Junshan Hu, Bin Luo, Huanxiong Xia and Peng Zou are serving as Guest Editors for this issue.

Adhesively bonded joints are used in a wide range of engineering structures, including airplanes, vehicles, vessels and buildings, and each of these applications has different test, design and analysis needs. The uses of adhesively bonded joints have demonstrated rapid growth because of their essential advantages in comparison with other joining methods, such as reduced structural weight, higher joint stiffness and superior anti-corrosion performance. Despite this, it should be noted that stress concentrations still exist in both the adhesive and the adherends due to the inherent discontinuity of materials at the bonding area whatever the material combinations are: metal–metal, metal–plastic, metal–composite, composite–composite, composite–concrete, plastic–plastic, or metal–ceramic, etc. Thus, the adhesive choices, bonding adherends, surface pretreatment, joint design, bonding process, and service condition, etc., need to be considered to drive the best performance of such prospective joint structures.

This Special Issue aims to share the latest contributions and achievements in the advanced testing, analysis, design and application of adhesively bonded joints in this area through high-quality original works, subsequently promoting its dissemination through this Open Access system.

Dr. Junshan Hu
Dr. Bin Luo
Dr. Huanxiong Xia
Dr. Peng Zou
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • adhesives
  • adhesive interface
  • adhesive surface treatment
  • bonding mechanisms
  • functionally graded adhesive joint
  • adhesive joint design
  • adhesive joint test
  • structural analysis and optimization
  • adhesive joint application
  • static and fatigue performance
  • numerical modeling/simulation

Benefits of Publishing in a Special Issue

  • Ease of navigation: Grouping papers by topic helps scholars navigate broad scope journals more efficiently.
  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
  • Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.
  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
  • e-Book format: Special Issues with more than 10 articles can be published as dedicated e-books, ensuring wide and rapid dissemination.

Further information on MDPI's Special Issue policies can be found here.

Published Papers (5 papers)

Order results
Result details
Select all
Export citation of selected articles as:

Research

23 pages, 11026 KiB  
Article
Analysis of Acoustic Absorption Coefficients and Characterization of Epoxy Adhesive Compositions Based on the Reaction Product of Bisphenol A with Epichlorohydrin Modified with Fillers
by Izabela Miturska-Barańska, Anna Rudawska, Lydia Sobotova, Miroslav Badida, Ewa Olewnik-Kruszkowska, Miroslav Müller and Monika Hromasová
Materials 2024, 17(18), 4452; https://doi.org/10.3390/ma17184452 - 10 Sep 2024
Viewed by 1483
Abstract
Material development in acoustic engineering plays a significant role in various applications, such as industrial noise control. It is important and relevant to consider alternative materials capable of reducing noise levels in different frequency ranges. One commonly used material in engineering structures is [...] Read more.
Material development in acoustic engineering plays a significant role in various applications, such as industrial noise control. It is important and relevant to consider alternative materials capable of reducing noise levels in different frequency ranges. One commonly used material in engineering structures is epoxy adhesive compositions. Favoring the use of adhesive compositions are their main characteristics, including weight reduction in structures, corrosion resistance, relatively low manufacturing costs, and high mechanical strength. This paper aims to discuss the relationship between the mechanical properties of modified epoxy adhesives, their structure, and sound absorption efficiency. The subjects of this study were specimens of an epoxy composition in the cured state. Acoustic absorption coefficients were evaluated using a dual-microphone impedance tube, and tensile, compressive, and bending strength properties were determined using a testing machine. The impact strength of the compositions was also investigated. An analysis of the structure of the adhesives in the cured state was carried out using a scanning electron microscope. The test specimens were made from Epidian 5 epoxy resin cured with a polyamide PAC curing agent. Nanobent ZR2 aluminosilicate in an amount of 1%, CaCO3 calcium carbonate in an amount of 5%, and CWZ-22 activated carbon in an amount of 20% were used as modifiers. The conducted studies revealed that the highest tensile strength was obtained for the adhesive composition with the addition of ZR2 filler. The highest compressive strength was exhibited by the adhesive composition with the addition of CWZ-22 filler. The highest flexural strength was demonstrated by the unmodified composition. For all the tested adhesive compositions, low sound absorption values were achieved, with a maximum of approximately 0.18. From the perspective of the reduction index R, it was observed that these samples performed better in reduction than in absorption. The best values were achieved in the compositions modified with CaCO3. Full article
Show Figures

Figure 1

20 pages, 16885 KiB  
Article
Extended Finite Element Method (XFEM) Model for the Damage Mechanisms Present in Joints Bonded Using Adhesives Doped with Inorganic Fillers
by João P. J. R. Santos, Daniel S. Correia, Eduardo A. S. Marques, Ricardo J. C. Carbas, Frida Gilbert and Lucas F. M. da Silva
Materials 2023, 16(23), 7499; https://doi.org/10.3390/ma16237499 - 4 Dec 2023
Cited by 3 | Viewed by 1813
Abstract
The use of adhesive bonding in diverse industries such as the automotive and aerospace sectors has grown considerably. In structural construction, adhesive joints provide a unique combination of low structural weight, high strength and stiffness, combined with a relatively simple and easily automated [...] Read more.
The use of adhesive bonding in diverse industries such as the automotive and aerospace sectors has grown considerably. In structural construction, adhesive joints provide a unique combination of low structural weight, high strength and stiffness, combined with a relatively simple and easily automated manufacturing method, characteristics that are ideal for the development of modern and highly efficient vehicles. In these applications, ensuring that the failure mode of a bonded joint is cohesive rather than adhesive is important since this failure mode is more controlled and easier to model and to predict. This work presents a numerical technique that enables the precise prediction of the bonded joint’s behavior regarding not only its failure mode, but also the joint’s strength, when inorganic fillers are added to the adhesive. To that end, hollow glass particles were introduced into an epoxy adhesive in different amounts, and a numerical study was carried out to simulate their influence on single lap joint specimens. The numerical results were compared against experimental ones, not only in terms of joint strength, but also their failure pattern. The neat adhesive, which showed 9% and 20% variations in terms of failure load and displacement, respectively. However, looking at the doped configurations, these presented smaller variations of about 2% and 10% for each respective variable. In all cases, by adding glass beads, crack initiation tended to change from adhesive to cohesive but with lower strength and ductility, correctly modeling the general experimental behavior as intended. Full article
Show Figures

Figure 1

14 pages, 4930 KiB  
Article
Comparison of Repair Methods for Cracked Titanium Alloy Aircraft Structures with Single-Sided Adhesively Bonded Composite Patches
by Junshan Hu, Chengyu Li, Jinrong Fang, Shizhan Chen, Shanyong Xuan and Wei Tian
Materials 2023, 16(19), 6361; https://doi.org/10.3390/ma16196361 - 22 Sep 2023
Cited by 3 | Viewed by 1828
Abstract
Composite patches are widely accepted as a useful practice for the repair of cracked aircraft components and the repair method is of vital importance to the final performance of the repaired structures. The present research experimentally studied the repair efficiency and processing stability [...] Read more.
Composite patches are widely accepted as a useful practice for the repair of cracked aircraft components and the repair method is of vital importance to the final performance of the repaired structures. The present research experimentally studied the repair efficiency and processing stability of pre-cured, prepreg (including unidirectional and plain weave prepregs) and wet-layup methods for use on cracked Ti-alloy panels through the configuration of a butt joint bonded with a one-sided composite patch. The efficiency and stability of these repair methods were elaborately evaluated and compared via the load bearing behavior, the microstructure of the bonding interface, and the structural failure morphology through two batches of testing specimens. Typical patterns were found in load-displacement curves where the initial damage and ultimate bearing load points divided them into elastic-linear, damage propagation and complete fracture phases. Although the co-cure process of both unidirectional prepreg and wet-layup methods can form a jigsaw-like demarcation interface between the adhesive layer and the composite patch to achieve a good bonding force and a high recovery of loading performance, the latter presents porous patches with a high coefficient of variation in load-carrying capacity. Conversely, the pre-cured laminate and the plain weave prepreg patches failed to restore the mechanical properties owing to the weak bonding interface and the low axial patch strength, respectively. The unidirectional prepreg patch was proven to be the optimal repair method for the cracked metallic structures when balancing repair efficiency and processing stability. Full article
Show Figures

Figure 1

15 pages, 8308 KiB  
Article
Surface Treatments for Enhancing the Bonding Strength of Aluminum Alloy Joints
by Juncheng Luo, Jianhua Liu, Huanxiong Xia, Xiaohui Ao, Haojie Yin and Lei Guo
Materials 2023, 16(16), 5674; https://doi.org/10.3390/ma16165674 - 18 Aug 2023
Cited by 7 | Viewed by 1980
Abstract
Aluminum alloy adhesive bonding joint widely appears in many industrial products. Improving the mechanical performances of aluminum alloy bonding joints has been attracting much effort. To acquire more excellent bonding strength, this paper focused on the effects of different surface treatments, including laser [...] Read more.
Aluminum alloy adhesive bonding joint widely appears in many industrial products. Improving the mechanical performances of aluminum alloy bonding joints has been attracting much effort. To acquire more excellent bonding strength, this paper focused on the effects of different surface treatments, including laser ablation and milling superposed by phosphoric acid anodizing (PAA). The treated surfaces were characterized by roughness and contact angle, and the effects of the geometric parameters of microstructures on wettability, failure mode, and shear strength were examined. The results indicate that those surfaces where the spacing is smaller than the diameter present a hydrophilic property and the corresponding specimens are mainly subject to cohesive failure, and vice versa. Additionally, laser ablation with a properly designed dimple pattern can greatly improve the bonding strength, and the maximum average shear strength of specimens with a thickness of 50 μm reaches 32.82 MPa, which is an increase of 28.15% compared with the original milling specimen. Moreover, fabricating groove or grid patterns on the surfaces and applying PAA treatment can also significantly enhance the bonding strength, reaching up to 36.28 MPa. Full article
Show Figures

Figure 1

9 pages, 7159 KiB  
Article
Effect of Thermal Aging on the Interfacial Reaction Behavior and Failure Mechanism of Ni-xCu/Sn Soldering Joints under Shear Loading
by Zhigang Li, Kai Cheng, Jiajun Liu, Yigang He and Yong Xiao
Materials 2023, 16(15), 5253; https://doi.org/10.3390/ma16155253 - 26 Jul 2023
Cited by 3 | Viewed by 1220
Abstract
Ni-xCu/Sn soldering joints were aged at 200 °C, and the microstructure evolution and mechanical properties during the solid-state reaction were studied under shear loading. Results showed that the intermetallic compounds (IMCs) exhibited a Cu content-dependent transformation from the (Ni,Cu)3Sn4 phase [...] Read more.
Ni-xCu/Sn soldering joints were aged at 200 °C, and the microstructure evolution and mechanical properties during the solid-state reaction were studied under shear loading. Results showed that the intermetallic compounds (IMCs) exhibited a Cu content-dependent transformation from the (Ni,Cu)3Sn4 phase to the (Cu,Ni)6Sn5 phase at the Ni-xCu/Sn interface. Furthermore, a Cu3Sn layer was observed exclusively at the Cu/Sn interface. The shear strength of the soldering joints after thermal aging exhibited an initial decrease followed by an increase, except for a significant enhancement at the Cu content of 60 wt.%. In addition, the evolution law of mechanical properties and failure mechanism of the thermal aging joints were elucidated based on the fracture microstructure and the fracture curve of the joints. Full article
Show Figures

Figure 1

Back to TopTop