Article
Engineering, Chemical
Sunil Kumar Gupta, Dharmendra Kumar Shukla, Dhake Kaustubh Ravindra
Summary: The lap shear strength and fracture toughness of epoxy/alumina nanocomposite adhesives in bonded aluminum alloy joints were significantly improved compared to neat epoxy adhesive. The optimal performance was observed at 1.5 wt.% of nanospheres and 1.0 wt.% of nanorods in the adhesive composition.
JOURNAL OF ADHESION
(2021)
Article
Engineering, Chemical
Ramin Chitsaz Dehaghani, Duane Cronin, John Montesano
Summary: This study focused on the lap shear strength of adhesively bonded non-crimp fabric CFRP composite materials, finding that abrading the surface with sandpaper resulted in the highest lap shear strength. Different stacking sequences also had an impact on the lap shear strength of the joints. Distinct failure processes were observed for CFRP adherends with different stacking sequences, but the final failure event was the fracture of the thin matrix layer in the 0 degrees ply of the adherends.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2021)
Editorial Material
Multidisciplinary Sciences
Kevin Kendall
Summary: This passage highlights the oversight of ASTM standards in neglecting the Griffith energy criterion of cracking in glued and welded joints, proposing a reevaluation of performance definitions for welded composite lap joints.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2021)
Article
Polymer Science
Won-Ji Lee, Sang-Ho Cha, Do-Hyun Kim
Summary: Incorporating a bio-based flame retardant CDPP into epoxy resin improves its flame retardancy and adhesion property.
Article
Engineering, Chemical
Lidia Orduna, Iker Razquin, Nora Aranburu, Gonzalo Guerrica-Echevarria
Summary: This study examines the effectiveness of different ionic liquids (ILs) as epoxy hardeners in epoxy-based adhesives. Various phosphonium and imidazolium-based ILs were tested as hardeners, and the properties of cured epoxy resins were evaluated at different IL concentrations. The chemical structure and concentration of ILs were found to impact the final properties of the resin. Among the ten ILs studied, three effectively cured the epoxy resin and exhibited comparable or superior mechanical properties and lap shear strength compared to traditional amine-based curing agents. These results highlight the potential of ILs in achieving sustainability by reducing volatility and the required amount for curing epoxy resins.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2023)
Article
Mechanics
Hongbo Xia, Yunwu Ma, Chuantong Chen, Jianhui Su, Chengsong Zhang, Caiwang Tan, Liqun Li, Peihao Geng, Ninshu Ma
Summary: In this study, DP590 steel and CFRP were successfully joined by laser welding, and experiments and simulations were conducted to investigate the influence of laser power on the joint characteristics, bonding mechanism, and fracture behavior. The results showed that the melting width and depth of CFRP increased with increasing laser power. Different fracture modes were observed at different laser powers, and chemical bonds formed at the interface were beneficial for improving fracture load.
COMPOSITE STRUCTURES
(2022)
Article
Engineering, Manufacturing
Tanmay, Sudhanshu Sekhar Panda
Summary: In this study, pure copper and aluminum alloy were lap joined using conventional TIG welding, and a successful weld was achieved. Metallurgical properties of the joints were investigated using various methods, with IMCs layers of different thickness formed at different welding parameters. The mechanical properties were tested through tensile shear tests, revealing a comparable load-carrying capacity to other non-conventional welding processes.
CIRP JOURNAL OF MANUFACTURING SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Xoan F. Sanchez-Romate, Antonio Del Bosque, Anabel Crespo, Rafael Alonso, Maria Sanchez, Alejandro Urena
Summary: This study proposes an adhesive based on Fe3O4 nanoparticle-doped epoxy resin for detachable adhesive joints with GFRP substrates. The results show that increasing the MNP content promotes larger aggregates and reduces nanoparticle sedimentation. The addition of expandable microspheres allows for a more uniform dispersion of MNPs and enhances the adhesive's electromagnetic heating capability. Furthermore, the lap shear strength of the adhesive is significantly reduced under EM heating, facilitating successful detachme
Article
Mechanics
Guozhen Ding, Peng Feng, Yu Wang, Pengcheng Ai
Summary: This paper proposes a novel lap joint for CFRP plates called a pre-clamp lap joint and investigates its mechanical performance through experiments and finite element analysis. The results show that the bolt preload, clamp device type, and adhesive application method are the main factors affecting the mechanical performance of the joints.
COMPOSITE STRUCTURES
(2022)
Article
Engineering, Civil
Rensheng Pan, Lingxiao Cheng, Xuan Zhou, Xiujiang Shen, Weiwei He
Summary: This paper presents the results of direct shear tests on 18 UHPC joint specimens, considering the influence of various factors. Two different failure modes were observed, and an updated model was proposed and validated against the test data.
Article
Chemistry, Physical
Jojibabu Panta, Andrew N. Rider, John Wang, Richard Yang, Narelle Brack, Y. X. Zhang
Summary: Incorporating branched polyethyleneimine dendrimer (PEI) functionalized carbon nanotubes (CNTs) and a phase-separated triblock copolymer significantly enhanced the lap shear strength of epoxy-based adhesive. The level of PEI grafting was controlled by adjusting the CNT to PEI dispersion ratio and led to grafting percentages ranging from 5% to 51%. The highest grafting ratios improved the dispersion of CNTs, but heterogeneous curing reactions and localised stress concentrations caused a reduction in lap shear strength.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Mohannad Naeem, Hsu-Chiang Kuan, Andrew Michelmore, Sirong Yu, Adrian P. Mouritz, Sanjay S. Chelliah, Jun Ma
Summary: A green and novel method was developed for preparing epoxy/graphene nanocomposites by microwave radiation and mechanical stirring, which successfully produced surface-modified graphene platelets without the need for organic solvents and surfactants. The process resulted in exfoliated and well-dispersed graphene platelets with improved mechanical and functional properties of the epoxy resin.
Article
Chemistry, Multidisciplinary
Kerong Ren, Haobing Han, Wentao Xu, Hua Qing
Summary: This study investigated the failure modes and failure mechanisms of riveted lap joints using finite element analysis software. The effects of factors such as the number of rivets, rivet rows, rivet arrangement, and row spacing on lap joint strength were studied. A line load density concept was proposed to address the issue of varying rivet spacing and edge distance, and a spring-mass model was developed to analyze forces in multi-row riveting. The results provide valuable insights for improving the strengths of riveted structures in aircraft.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Multidisciplinary
Haisu Kang, Ji Hee Lee, Youngson Choe, Seung Geol Lee
Summary: In this study, an artificial neural network was used to predict the adhesion strength of structural epoxy adhesives, and it was found that the content of catalyst, flexibilizer, and curing agent in the epoxy formulation had the highest correlation with the lap shear strength. By analyzing the data sets, predictive models were constructed and optimized to predict and optimize the adhesive strength of epoxy adhesives.
Article
Polymer Science
Klaudia Sliwa-Wieczorek, Boguslaw Zajac
Summary: The study investigated the double lap adhesive connections using Sika(R) PS and Monolith EP2579-1 in shear tests, showing that temperature affects the load capacity and deformability of the joint. A comparative analysis between polyurethane and epoxy adhesives was conducted, with observations on the failure initiation and form. The results indicated that temperature increase reduced the destructive force for both adhesives, with flexible joints retaining partial load capacity after reaching destructive force.
Article
Engineering, Mechanical
J. M. L. Reis, S. A. Martins, H. S. da Costa Mattos
JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING
(2020)
Article
Engineering, Chemical
J. M. L. Reis, F. C. Amorim, J. F. B. Souza, T. Sant'Anna, H. S. da Costa Mattos
Summary: Diesel is an important fuel due to the longevity and cleanliness of diesel engines. Understanding compatibility of polymers with diesel is crucial, especially with materials like polyoxymethylene (POM) used in automotive components. This study conducted tensile tests on plain and glass fiber reinforced POM after immersion in diesel at different temperatures and times, developing a mathematical model that showed good agreement with experimental results.
POLYMER ENGINEERING AND SCIENCE
(2021)
Article
Engineering, Mechanical
C. R. de Luca, J. F. Sathler, Y. H. Quintana, J. M. L. Reis, H. S. da Costa Mattos
Summary: This paper analyzes the thermal aging process of polyamide 66 at two different temperatures over 9000 hours and proposes a unified expression to estimate its mechanical behavior in tensile tests. The study shows that with a minimum of three tests at different aging stages, a reasonable approximation of the stress-strain curve for a wide range of times can be obtained.
JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING
(2021)
Article
Mechanics
Julia Figueiredo Sathler, Camila Ranucci de Luca, Joao Marciano Laredo dos Reis, Heraldo Silva da Costa Mattos
Summary: Composite repair systems for metallic pipelines with through-wall defects must be qualified according to ISO 24817 or ASME PCC-2 standards through multiple hydrostatic tests to determine failure pressure. The study suggests that a simpler method, such as shaft-loaded and pressurized blister tests, can be used as an alternative to hydrostatic tests to experimentally obtain critical fracture energy values. Results show reasonable similarity between critical energy values obtained from pressurized and shaft-loaded blister tests compared to standard hydrostatic tests.
COMPOSITE STRUCTURES
(2021)
Article
Engineering, Mechanical
H. S. da Costa Mattos, J. M. L. Reis, F. C. Amorim, J. F. S. Brandao, L. D. M. Lana, V. A. Perrut
Summary: The study verifies the long-term performance of a composite repair system through high-pressure hydrostatic tests and finds that environmental temperature changes may cause pressure oscillation inside the specimen. The model predictions align well with experimental results, assisting in controlling static pressure and obtaining valuable information about the long-term performance of the composite repair system.
ENGINEERING FAILURE ANALYSIS
(2021)
Article
Engineering, Chemical
M. J. Oliveira, F. F. Enne, J. M. L. Reis, H. S. da Costa Mattos
Summary: The study found that different surface preparation methods for pipelines have a significant impact on the repair performance of bonded metallic patches. While using a rotating bristle machine produces the best results in terms of roughness and strength, other alternative methods are less time-consuming and easier to use in the field.
JOURNAL OF ADHESION
(2022)
Article
Engineering, Chemical
F. F. Enne, M. J. Oliveira, J. M. L. Reis, Heraldo S. da Costa Mattos
Summary: This paper focuses on the repair of through-wall corrosion damage in metallic pipes using bonded metallic patches. It is found that the thickness of the patch plays a significant role in the effectiveness of the repair. The study shows that a bonded metallic patch alone can prevent leaking without the need for a composite sleeve.
JOURNAL OF ADHESION
(2023)
Article
Mechanics
J. M. L. Reis, A. R. Costa, H. S. da Costa Mattos
Summary: This study investigates the repair of corrosion damage in metallic pipes using GFRP patches and finds that the effectiveness of the repair is strongly dependent on the thickness and surface roughness of the patches.
COMPOSITE STRUCTURES
(2022)
Article
Mechanics
J. M. L. Reis, E. M. Menezes, H. S. da Costa Mattos, R. J. C. Carbas, E. A. Marques, L. F. M. Silva
Summary: The application of adhesively bonded joints in the petroleum industry has increased due to the advantages of light weight structures, fast repairing systems, and low temperature applications. This study investigates the mechanical behavior of dissimilar materials joints used as repair systems for metallic pipelines. Experimental analyses show a correlation between the critical energy release rates obtained in dissimilar joint tests and hydrostatic tests on repaired pipelines. An approximate theoretical framework is proposed to estimate critical fracture parameters using simpler and less expensive tests.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Chemical
B. M. Miranda, J. M. L. Reis, H. S. da Costa Mattos
Summary: Composite repairs are increasingly used for restoring the work capability of pipelines with through-wall defects caused by corrosion. International standards, such as ISO and ASME, are used for designing and qualifying such repairs. However, these standards do not consider the influence of adhesive layer thickness on failure pressure and energy release rate. This paper presents an experimental investigation that demonstrates the impact of adhesive thickness on failure pressure and proposes an empirical model to calculate failure pressure as a function of adhesive layer thickness.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2023)
Article
Engineering, Chemical
Camila R. De Luca, Joao M. L. Reis, Heraldo Da Costa S. Mattos
Summary: The present study investigates the inelastic behavior observed in load-unload cyclic tests of single lap joints composed of a polyurethane based composite reinforced with fiberglass bonded to an ASTM A1020 steel substrate using an epoxy adhesive at 50 degrees C. The experimental results demonstrate that the inelastic behavior of the joint greatly depends on the load frequency, leading to progressive deformation under load-unload cyclic loading. The main objective of this study was to propose a preliminary rate-dependent mechanical model that accurately describes the cyclic inelastic behavior for various load-unload histories at low frequencies, and there was a reasonable agreement between the experimental results and the model predictions.
JOURNAL OF ADHESION
(2023)
Article
Mechanics
Camila R. De Luca, Joao M. L. Reis, Guilherme P. Mota, Heraldo S. Da Costa Mattos
Summary: This paper investigates the possibility of adding silica as a low-cost thixotropic thickener to a commercial epoxy resin to facilitate the application of a primer adhesive layer for repairing through-thickness corrosion damage in metal pipes, while maintaining the strength and effectiveness of the repair after curing.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Mechanical
Felipe C. C. Amorim, Jessica G. H. Ferreira, Joao F. B. Souza, Joao M. L. Reis, Heraldo S. da Costa S. Mattos
Summary: This paper focuses on the analysis of the thermomechanical behavior of polypropylene (PP) in different strain rates and temperatures. The thermal properties of PP are experimentally obtained and a mechanical behavior model is proposed based on the experimental results. The model predicts the stress-strain curve for different strain rates and temperatures with reasonably good accuracy.
JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Ranulfo Martins Carneiro Neto, Mila Siqueira de Paula, Eduardo Martins Sampaio, Ney Robson Ferreira Rohem, Lucas Lisboa Vignoli
Summary: This study aimed to investigate the creep lifetime of single lap joints bonded with two different adhesives (epoxy and polyurethane). The results showed similar behavior in joints bonded with two different epoxies, while the comparison between polyurethane adhesives showed significant differences in the curves obtained, especially in the time of life span.
MATERIA-RIO DE JANEIRO
(2021)
Article
Materials Science, Multidisciplinary
Victor Barbosa de Souza, Rodinei Lopes Junior, Paulo Feliciano Soares Filho, Heraldo Silva da Costa Mattos
MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS
(2020)
Article
Engineering, Chemical
Fengze Dai, Yinjie Dai, Shu Huang, Xijun Hua
Summary: In this study, laser surface texturing (LST) was performed on the surface of 6061 aluminum alloy using a pulsed laser, and then SHF-2D zinc epoxy coating (SP) was applied. The results show that LST can effectively increase the adhesion strength, and the pattern of the spatter produced by laser irradiation determines the adhesion strength.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2024)
Article
Engineering, Chemical
Leonardo Lamberti Miotti, Andressa Cargnelutti Follak, Luciano de Souza Goncalves, Eliseu Aldrighi Munchow, Alexandre Henrique Susin
Summary: The purpose of this in vitro study was to evaluate the immediate and long-term bond strength of self-adhesive and conventional resin luting agents with a new restorative material to dentin. The results showed that the conventional dual resin cement had better bond strength to dentin when using the etch-and-rinse strategy.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2024)
Article
Engineering, Chemical
Ivan Argatov, Xiaoqing Jin, Gennady Mishuris
Summary: This study presents a fitting-based analysis of experimental force/displacement curves to propose an explanation method for adhesive contact based on Griffith's energy balance model, which is applicable for finite deformations between a polymer brush grafted onto a rigid substrate and an AFM probe.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2024)
Article
Engineering, Chemical
Mitsuhiro Gonda, Toru Utsunomiya, Takashi Ichii, Hiroyuki Sugimura
Summary: The technique of surface photoactivation using VUV light has been used for adhesive-free bonding of POM plates. The POM surfaces were modified through VUV light irradiation, resulting in the formation of oxygen-containing functionalities. The bonds formed through thermocompression and the mechanical properties of the bonding interface were different from the bulk POM.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2024)
Review
Engineering, Chemical
Renally Bezerra Wanderley Lima, Juan Vitor Costa Leite, Joao Vitor do Nascimento Santos, Laryssa Mylenna Madruga Barbosa, Hermano Nobrega Macedo Neto, Joao Gabriel Regis da Silva, Isis de Araujo Ferreira Muniz, Debora e Silva Campos, Grace Mendonca De Souza
Summary: This systematic review compared the bond strength between zirconia and resin cements when different surface treatments were used. The findings indicated that tribochemical silica-coating/silane-based treatments are more effective than alumina blasting/zirconia primers in enhancing the bond strength to zirconia.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2024)
Review
Engineering, Chemical
Luisa Valente Gotardo Lara Alves, Nathalia Mancioppi Cerqueira, Amanda Pelegrin Candemil, Andre Luis Faria-e-Silva, Manoel Damiao Sousa-Neto, Aline Evangelista Souza-Gabriel
Summary: This systematic review and meta-analysis evaluated the effect of chitosan on resin-dentin bond strength. The results showed that chitosan can improve the immediate bond strength of self-etching adhesives and the long-term bond strength of etch-and-rinse adhesives.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2024)
Retraction
Engineering, Chemical
M. Soliman, S. Saadaldin, A. Aldegheishem, A. Abdull, S. Al-Shma, E. Eldwakhly
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2024)
Article
Engineering, Chemical
Sabrina Mahnel, Franz Bannert, Johannes Zimmermann, Sergio Grunder, Martin Demmig, Silvia Lomolino, Guido Grundmeier
Summary: These studies present a new method for analyzing the maximum open time of cold curing adhesives, and investigate the curing reaction and bonding behavior of two cold curing polyurethane adhesives. The results show that the main problem for industrial applications is dimensional accuracy, and the manual spatula test is a suitable method for production environment with good reproducibility.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2024)
Article
Engineering, Chemical
J. Vanerek, R. Balkova, M. Smak, A. Betak, Z. Vejpustek
Summary: The paper focuses on the behavior of glued joints of wooden sections at elevated temperatures. The study found that the curing of PRF and PUR adhesives was insufficient at high temperatures. At 140℃, there was no significant reduction in strength for all tested adhesives, but a longer duration (1 day) led to a decrease in tensile shear strength. At 170℃, PRF and EPI showed a significant drop in strength, while PUR lost its strength completely after longer duration exposures.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2024)
Article
Engineering, Chemical
Ryota Aoki, Toshiki Takamizawa, Yuta Kasahara, Munenori Yokoyama, Shunichi Suda, Rei Muto, Atsushi Kamimoto, Masashi Miyazaki
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2024)
Review
Engineering, Chemical
Isabel V. Souza, Nathalia S. Finck, Camila S. Rodrigues, Rafael R. Moraes
Summary: This systematic review summarizes the evidence from in vitro studies on the effect of different glass ceramic processing methods on the bond strength to resin-based luting agents. The findings suggest that ceramics processed by CAD-CAM method generally have higher bond strength to resin-based materials compared to heat-pressing or layering processing methods.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2024)
Article
Engineering, Chemical
Chenglong Zhang, Huiqi Shao, Yue Zhang, Nanliang Chen, Jinhua Jiang
Summary: This study investigates the potential application of adhesive bonding techniques for connecting envelope composites in airships. Experimental results show that the mechanical performance of adhesively bonded joints is significantly influenced by structural parameters, while simulation results reveal the mechanism of the negative effect of stiffness mismatch on the failure strength of adhesively bonded joints.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2024)
Article
Engineering, Chemical
Xinyi Chen, Hisham Essawy, Haizhu Wu, Antonio Pizzi, Emmanuel Fredon, Christine Gerardin, Guanben Du, Xiaojian Zhou
Summary: In this study, the performance of tannin-based non-isocyanate polyurethane adhesive was improved by using branched polyethylenimine/tannin mixtures instead of toxic hexamethylenediamine. By adding appropriate amounts of tannin/PEI mixtures, the viscosity and thermal stability of the adhesive were enhanced, and it achieved similar bonding performance to the traditional adhesive.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2024)
Article
Engineering, Chemical
M. K. Saravanan, A. V. S. Siva Prasad, Raguraman Munusamy
Summary: Polyurea coated structures have garnered significant attention due to their various applications. However, there is a lack of research on delamination in polyurea coated structures. This study aims to develop a rate-dependent traction-separation model and a numerical modeling framework to simulate the rate-dependent delamination process. The proposed approach successfully reproduced the fracture mechanisms and aided in understanding the interaction between different regions during delamination.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2024)
Article
Engineering, Chemical
Jihyeon Hur, Minseok Kim, Jun Tae Kim, Eunyeong Yang, Seung Sang Hwang, Jongok Won
Summary: A multinetwork structured urushi organogel was created by using Fe3+ ions for both chemical and physical crosslinking. This gel exhibits reversible adhesive properties and consistent tensile strength, providing potential applications for natural urushi.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2024)
