Article
Materials Science, Composites
Sunil Kumar Gupta
Summary: The study found that at high strain rates, the failure load of epoxy adhesives containing 1.5% sphere and rod nano-Al2O3 was 3 to 5 times higher than the static failure load of the adhesive. The reinforcement of sphere nano-Al2O3 in epoxy had a better effect on failure load compared to rod nano-Al2O3.
POLYMER COMPOSITES
(2021)
Article
Engineering, Chemical
Yasemin Korkmaz, Kursat Gultekin
Summary: This research investigates the effects of hexagonal boron nitride and hexagonal boron carbide nanoparticles on epoxy composites and single lap joints during hydrothermal ageing. The results show that doping boron nanoparticles can reduce the degradation rate of epoxy resin and improve the mechanical properties of the materials.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2022)
Article
Engineering, Chemical
Yasemin Korkmaz, Erhan Cetin, Kuersat Gueltekin
Summary: The research aimed to enhance the ageing performance of nanocomposites and bonded joints in saltwater by doping with boron nanoparticles. Epoxy nanocomposites and bonded aluminum 2024-T3 joints with and without 2 wt% silane-functionalized boron carbide (B4C) and boron nitride (BN) nanoparticles were produced and exposed to saltwater ageing. The research comprehensively assessed the changes in properties using various tests and found that the doped nanocomposites showed higher Tg values and better mechanical properties compared to the undoped ones, indicating the effectiveness of boron nanoparticle doping in improving performance in saltwater environments.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2023)
Article
Engineering, Manufacturing
Isha Paliwal, M. Ramji, S. N. Khaderi
Summary: The study aims to characterize the performance of four different composite/composite single lap joint configurations at various loading rates through experimental methods. The lap joints are tested using tensile split-Hopkinson bar and fatigue testing machine. Experimental results show that the peak load, initial stiffness, and energy absorbed generally increase with loading rates, while the plateau load is relatively insensitive to loading rates. Finite element analysis using Abaqus/Explicit solver qualitatively explains the experimental observations by considering the rate dependency of adhesive.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Materials Science, Multidisciplinary
David J. J. Kemmenoe, Shefford P. P. Baker
Summary: The strength of brazed joints is commonly characterized by uniaxial tension testing of single lap joints. However, existing interpretations based on the average shear stress at failure are incorrect. This study used finite element analysis to quantify the stress distributions in monolithic stainless steel single lap joints and found that bending stresses and normal stresses are highly concentrated at the ends of the overlap regions, with peak normal stresses exceeding peak shear stresses. The variations in peak stresses with applied stress and overlap ratio fully explain experimental joint strength data, providing implications for testing, interpretation, and joint design.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2023)
Article
Multidisciplinary Sciences
Irene Fernandez Villegas, Calvin Rans
Summary: Single-lap shear (SLS) joints are easy to manufacture and suitable for testing polymer composite welded joints. However, comparing different aspects of joints solely based on strength values from SLS testing can be deceptive, as other factors like joint mesostructure and failure modes should also be considered for a comprehensive assessment.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2021)
Article
Engineering, Mechanical
Zhou Yang, Ruisong Jiang, Yangjie Zuo
Summary: A riveting method with a gasket was developed for CFRP/CFRP joints. The study evaluated the riveting damage behaviors and conducted a parametric study of the rivet rod length. Results showed that the damage mainly occurred near the rivet deformed head, due to excessive deformation of the rivet tail. Using an appropriate gasket significantly reduced riveting damage and enhanced the joining strength of the composite specimen. This paper provided a useful joining method for aircraft composite structures.
ENGINEERING FAILURE ANALYSIS
(2023)
Article
Engineering, Chemical
G. C. G. Serra, P. N. B. Reis, J. A. M. Ferreira
Summary: Using mixed adhesive joints with different curing temperatures is an effective strategy to enhance mechanical properties. The curing temperature has a significant impact on tensile strength, creep, stress relaxation, and fatigue strength.
JOURNAL OF ADHESION
(2023)
Article
Mechanics
Fan Zou, Jiaqiang Dang, Tao Chen, Qinglong An, Ming Chen
Summary: This paper aims to evaluate the typical mechanical hole-making processes of CFRP/Ti stacks and reveal their influence mechanism on the mechanical behavior of single-lap bolted joints. Typical hole-making processes are systematically investigated and compared by applying machining and mechanical tests. The obtained results provide a multi-criteria evaluation scheme as a basis for hole-making process selection in the aerospace industry.
COMPOSITE STRUCTURES
(2023)
Article
Thermodynamics
Xuande Yue, Luling An, Zengtao Chen, Chufan Wang, Yuebo Cai, Ruiheng Xiao
Summary: The research on composite-aluminum single-lap single-bolt joints showed that filling shims can significantly increase tension stiffness and peak load. Liquid and peelable fiberglass shims have different effects on tension stiffness and peak load, with the peelable fiberglass shim performing better.
ADVANCES IN MECHANICAL ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Michelangelo Mortello, Matteo Pedemonte, Nicola Contuzzi, Giuseppe Casalino
Summary: The optimal welding parameters were found to be rotation speeds of 700-800 rpm and feed speeds of 1.3-1.9 mm/s. Fatigue tests revealed cracks preferentially propagating in the aluminum base material, with different fatigue stress responses for samples from different positions along the same weld, leading to an overall variability in weld behavior.
Article
Construction & Building Technology
Minjuan He, Chengyang He, Xijun Wang, Minghao Li, Yongliang Sun, Yaming Li
Summary: Glulam gridshells are a preferred choice for large-span structures due to their aesthetic appearance and structural efficiency. This paper investigates the impact of commonly used half-lap spliced joints on the mechanical properties of glulam components for large-span gridshell structures. Experimental tests were conducted, and analytical models were developed to predict the moment capacity of glulam components with such joints. The results showed the influence of different support conditions and the potential for designing more efficient joints.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Engineering, Mechanical
Benedicte Robitaille, Paul R. Provencher, Lyne St-Georges, Myriam Brochu
Summary: The effect of surface preparation on friction stir welded joints of 2024-T3 AlClad plates was studied, showing that brushing or cleaning the mating surfaces did not significantly impact macroscopic discontinuities, geometrical features, or mechanical behavior of the joints. Tensile and fatigue tests revealed no significant difference in performance between brushed and as-clad welds, with failure occurring in similar locations and modes for both types of preparation.
INTERNATIONAL JOURNAL OF FATIGUE
(2021)
Article
Materials Science, Composites
Ertan Kosedag, Recep Ekici, Nail Yildiz, Umut Caliskan
Summary: This study investigates the mechanical properties of carbon fiber reinforced epoxy composites filled with Graphene (Gr) and Silicon Carbide (SiC) nanoparticles. Tensile, compression, and three point bending tests were performed to determine the effects of additive type and weight ratios. The results show that CFRECs with Gr additive exhibit improved tensile properties compared to the unfilled composites, especially at higher filler contents and specific fiber orientations.
POLYMER COMPOSITES
(2023)
Article
Chemistry, Physical
Felipe Vannucchi de Camargo, Eduardo da Silva Fernandes, Carla Schwengber ten Caten, Annelise Kopp Alves, Carlos Perez Bergmann, Giangiacomo Minak
Summary: The study introduces the analysis of single-lap co-cured joints of thermoplastic self-reinforced composites made with reprocessed LDPE and UHMWPE fibers, along with a micromechanical analysis of its constituents. Optimal processing conditions were found to yield joints with 6.88 MPa of shear strength, with shear failure generally preceded by debonding-induced longitudinal cracks due to accumulated stress. This composite material shows promise for wider industrial applications due to its specific mechanical properties, progressive damage of joints, and recyclability.
Article
Engineering, Multidisciplinary
Kursat Gultekin, Salih Akpinar, Ahmet Gurses, Zafer Eroglu, Salim Cam, Hamit Akbulut, Zeki Keskin, Adnan Ozel
COMPOSITES PART B-ENGINEERING
(2016)
Article
Engineering, Chemical
Iclal Avinc Akpinar, Kursat Gultekin, Salih Akpinar, Ahmet Gurses, Adnan Ozel
JOURNAL OF ADHESION
(2018)
Article
Engineering, Chemical
KurSat Gultekin, Salih Akpinar, Adnan Ozel, GulSah Alar Oner
JOURNAL OF ADHESION
(2017)
Article
Engineering, Chemical
Iclal Avinc Akpinar, Ahmet Gurses, Salih Akpinar, Kursat Gultekin, Hamit Akbulut, Adnan Ozel
JOURNAL OF ADHESION
(2018)
Article
Polymer Science
Kursat Gultekin, Gediz Uguz, Adnan Ozel
Summary: Research on nanoparticle-reinforced polymer materials has attracted attention, with various nanoparticles being used to enhance the properties of polymer matrix composites. In this study, nano hexagonal boron nitride particles functionalized with APTES were added to epoxy matrix to improve the mechanical and thermal properties of structural adhesive. The experimental results showed that the thermal and mechanical properties of the adhesives were enhanced by adding functionalized nano h-BN particles at different ratios.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Kursat Gultekin, Gediz Uguz, Yildiray Topcu, Adnan Ozel
Summary: This study investigated the effect of doping silanized hexagonal boron carbide nanoparticles in varying proportions into the epoxy resin on the structural, thermal, and mechanical properties of nanocomposites. The results showed significant improvements in mechanical and thermal properties with the optimum doping ratio determined as 2% by weight.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Kursat Gultekin, Mustafa Enes Yazici
Summary: The study revealed that reinforcing hexagonal boron nitride and hexagonal boron carbide nanoparticles in adhesives can substantially increase joint strength, especially depending on the viscosity of the adhesives and the reinforcement ratio.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART L-JOURNAL OF MATERIALS-DESIGN AND APPLICATIONS
(2022)
Article
Polymer Science
Yasemin Korkmaz, Kursat Gultekin
Summary: The effect of environmental conditions, such as UV irradiation, on epoxy polymers is a limiting factor for their outdoor applications. This study investigates the potential of incorporating boron nanoparticles to improve the resistance of epoxy adhesives against UV degradation. Experimental results indicate that the degradation of both bulk adhesives and adhesively bonded joints is reduced when reinforced with boron nanoparticles.
POLYMER DEGRADATION AND STABILITY
(2022)
Article
Engineering, Chemical
Yasemin Korkmaz, Kursat Gultekin
Summary: This research investigates the effects of hexagonal boron nitride and hexagonal boron carbide nanoparticles on epoxy composites and single lap joints during hydrothermal ageing. The results show that doping boron nanoparticles can reduce the degradation rate of epoxy resin and improve the mechanical properties of the materials.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2022)
Article
Engineering, Chemical
Yasemin Korkmaz, Kursat Gultekin
Summary: In this study, the addition of silane-modified BN and B4C nanostructures was found to improve the degradation in strength of adhesively bonded carbon fibre composite joints exposed to harsh mediums. Adding the nanostructures decreased liquid absorption and reduced damage by limiting the harmful effects of the mediums. The mechanically tested joints showed higher load-bearing capacity when reinforced with the nanostructures.
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Chemical
Yasemin Korkmaz, Erhan Cetin, Kuersat Gueltekin
Summary: The research aimed to enhance the ageing performance of nanocomposites and bonded joints in saltwater by doping with boron nanoparticles. Epoxy nanocomposites and bonded aluminum 2024-T3 joints with and without 2 wt% silane-functionalized boron carbide (B4C) and boron nitride (BN) nanoparticles were produced and exposed to saltwater ageing. The research comprehensively assessed the changes in properties using various tests and found that the doped nanocomposites showed higher Tg values and better mechanical properties compared to the undoped ones, indicating the effectiveness of boron nanoparticle doping in improving performance in saltwater environments.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2023)
Article
Engineering, Multidisciplinary
Kursat Gultekin, Mustafa Enes Yazici
Summary: This study investigated the effects of hBN and hB(4)C nanoparticles on adhesive joints, and improved the distribution and adhesion of nanoparticles in epoxy adhesive through functionalization. The results showed that using hBN and hB(4)C nanoparticles can significantly increase the failure loads of adhesive joints.
JOURNAL OF THE FACULTY OF ENGINEERING AND ARCHITECTURE OF GAZI UNIVERSITY
(2022)
Article
Engineering, Multidisciplinary
Iclal Avinc Akpinar, Kursat Gultekin, Salih Akpinar, Hamit Akbulut, Adnan Ozel
COMPOSITES PART B-ENGINEERING
(2017)
Article
Engineering, Multidisciplinary
Idal Avinc Akpinar, Kursat Gultekin, Salih Akpinar, Hamit Akbulut, Adnan Ozel
COMPOSITES PART B-ENGINEERING
(2017)
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)
