(2021). Correction. Journal of Adhesion Science and Technology. Ahead of Print.

Abstract This study investigated the load bearing capacity of intraradicular posts and core materials under static and dynamic loading. Human teeth with single root (N = 154, n = 14 per sub group) were endodontically prepared and randomly divided into six groups: CON: Sound premolars; TP: Titanium post (Flat Head T); FRCP: Indirect E-glass FRC post (FRC Postec Plus); FRCC: Fiber-reinforced resin composite

Abstract This in vitro study aimed to investigate the bond strength and discoloration between the zirconia framework and veneer ceramic applied after liner and argon plasma treatment with two different techniques. A total of 200 zirconium substructures of 12 mm length, 10 mm width, and 0.7 mm thickness were divided into five subgroups for the application of different thicknesses of liner: C (no liner

Abstract To delay the expansion of reflective cracks on semi-rigid base asphalt pavements and strengthen the cracking resistance of asphalt rubber stress-absorbing membrane interlayers, the bonding and fracture performances as well as cracking resistance of a fiber-reinforced asphalt rubber stress-absorbing membrane interlayer (FAR-SAMI), rubber asphalt stress-absorbing membrane interlayer (AR-SAMI)

Abstract This study assessed the effect of surface conditioning methods and ceramic primers on the repair strength of resin-composite to zirconia-veneering ceramic with different defect sizes. Zirconia (IPS e.max ZirCAD) (n = 30) and veneering ceramic (Creation) (n = 30) alone acted as control groups. In the 1st part of the study, zirconia was silica-coated (SC) and treated with 3 different ceramic

Abstract The cervical area of teeth is the most unpredictable region for durable adhesive bonding. This study evaluated the adhesion potential of resin cement to coronal and cervical/root structures with a focus on enamel, dentin and cementum using etch-and-rinse and self-etch adhesive systems. Anterior teeth (N = 60) were randomly divided into six groups for adhesion tests: (a) unprepared enamel (UE)

Abstract The reinforcement efficiency on a composite depends on the effective transfer of the stress between matrix and fiber. This work presents an experimental and comparative study of fiber-matrix bond strength for fiber-matrix interface between glass fibers and carbon fibers added to the slag-based geopolymer matrix. This analysis was performed by pull-out test. A total of 18 tests have been conducted

Abstract Concrete is a building material widely used in construction due to its excellent mechanical properties such as compressive strength and bond strength with steel reinforcement. Strength and durability are the key factors that need to be satisfied in the design of reinforced concrete structures. The objective of this paper is to improve the bond strength and corrosion resistance of concrete

Abstract Scarf repair method which can get uniform stress distributions and smooth surfaces has emerged as an adequate technique to repair damaged aerospace composite components. However, a prominent problem with the use of scarf-repaired structures is their susceptibility to environmental conditions. This research deals with the failure and reliability analysis of scarf-repaired carbon fiber-reinforced

Abstract In Micro-Electro-Mechanical System (MEMS) area, micro metal devices can be fabricated by the micro electroforming process. However, due to the oxide layer of the substrate surface, the electroforming layer suffers from poor adhesion strength. In order to reduce the oxide layer of the substrate surface, the effects of the ultrasonic electrochemical potential activation method to reduce the

Abstract This study examined the influence of two in-office bleaching on surface roughness, topography and microhardness of RMGIs. Disc-shape samples of RMGIs (Ketac N100, Fuji II LC-Capsule, and Photac Fil Quick Aplicap) were prepared and polymerized by a LED light curing unit. Polished samples, were subjected to in-office bleaching agents, Opalescence Xtra Boost (OXB) and Pola Office (PO), for 3

(2021). The impact of COVID-19 on adhesion science. Journal of Adhesion Science and Technology: Vol. 35, No. 1, pp. 1-2.

Abstract Recently resistance welding (RW) technique have emerged as a viable alternative method for the joining of fiber reinforced polymer (FRP) composites. It is more cost‐efficient as opposed to the conventional adhesive, mechanical and other joining methods. The objective of this paper is to provide a deeper insight into the recent development of the resistance welding technique for FRP composites

Abstract Thin-walled and large-deformation composite components that need to be stowed and deployed as space deployable structures require a high bonding property. The purpose of this work is to study the failure mode and influence of scroll radius, adhesive elastic modulus, adhesive thickness, and layup angle on the stress of the adhesive layer and strain energy through a numerical method. A good

Abstract This literature review describes the history, and discusses important aspects regarding bonding mechanisms, clinical performance, and current status of different types of dental adhesives. The development of dental bonding has remarkably changed concepts and procedures related to Restorative Dentistry. Buonocore’s report on enamel acid-etching, followed by the description of the hybrid layer

Abstract In this research, graft copolymerization of Methyl methacrylate (MMA; hereafter) on to Polychloroprene rubber (CR; hereafter) has been processed in the presence of hydrogen peroxide as an initiator. Grafting reaction has been carried out in a mechanical mixer, and factors such as time, temperature, monomer, and initiator’s concentration were investigated and optimized. FTIR confirmed the grafting

Abstract This study aimed to assess root canal irrigants' effect on the bond strength between endodontic sealers and root canal dentin, through a systematic review. The study protocol is available online (https://osf.io/x9tw4/). We selected studies considering the effects of root canal irrigants on sealer bond strength and comparing the influence of such agents used during the endodontic treatment

Abstract In this work, a novel soybean oil-based urethane acrylate polyol called ADSO was synthesized by the condensation reaction of hydroxyethyl acrylate modified isophorone diisocyanate with chlorinated soybean oil (SOL). The soybean oil-based waterborne polyurethane called ADSO-WPU was prepared with SOL and ADSO as polyols. Using the carbon-carbon double bonds of ADSO-WPU as reaction sites, methyl

Abstract This study evaluated how adding EGCG to a SEP (Clearfil SE Bond, Kuraray) affects the physicomechanical properties of adhesive, and the long-term microtensile bond strength (µTBS) to dentin. Flexural strength (FS, n = 10) and degree of conversion (DC, n = 5) of the adhesive were analyzed after adding EGCG to SEP in two forms (powder or diluted in water), and in different concentrations (0

Abstract This paper reviews the reported literature on dissimilar (non-matched adherend) adhesively bonded joints (ABJs), currently used bonding processes, and the mechanisms by which these types of joints fail when subjected to structural loading and environmental conditions. Additionally, approaches to improve the performance of dissimilar ABJs, through geometrical and material modifications, are

Abstract Tetraethyl orthosilicate (TEOS) was used as a chemical precursor to deposit ultra-thin SiO x C y plasma polymer films onto mild steel surfaces for preventing the corrosion process. The structure–property relationships of the coatings were evaluated by X-ray Photo Spectroscopy (XPS), X-Ray Diffraction (XRD), Fourier Transform InfraRed spectroscopy (ATR-FTIR) and Energy Dispersive X-ray spectroscopy

Abstract This study evaluated the effect of pre-heating a dual-polymerized adhesive and a dual-polymerized core build-up resin composite on their dentin micro-shear bond strength (µSBS), degree of conversion (DC%) and ultimate tensile strength (UTS). For µSBS, 45 human molars were divided into 9 groups (n = 5) according to two factors: (1) Adhesive temperature (25 °C/32 °C/40 °C) and 2- Resin composite

Abstract The surface of stainless-steel (SS) mesh was modified by growing carbon nanotubes (CNTs) from ethanol flame. The CNT-modified SS mesh was then used as a heating element for the resistance welding of glass-fibre-reinforced polyetherimide (GF/PEI) laminates to improve the interfacial bond strength of SS wire and PEI resin. Interfacial microstructure, the mechanical properties of the welded joint

Abstract The evolution of dissipation energy of the uniaxial and multiaxial fatigue experiments on the automobile sealant adhesively bonded butt joints was investigated by the method of fatigue dissipation energy analysis and fatigue failure identification. The results demonstrated that the dissipation energy increased and the fatigue life decreased with the increase of stress amplitude, mean stress

Abstract The current study investigates the better reinforcing tendency of superplasticizer stabilized carbon nanomaterials hybrid, i.e. FCNT@GO in comparison to the individual carbon nanomaterials, i.e. either graphene oxide (GO) or functionalized carbon nanotubes (FCNTs) on the fly ash blended cement mortars (FCMs). The compressive strength for 0.08% FCNT-FCMs and 0.08% GO-FCMs (by weight percent

Abstract This study aimed to comparatively evaluate the cell viability, flexural strength (FS) and depth of penetration following surface pretreatment of demineralized dentin with phytosphingosine (PHS) and proanthocyanidin (PAC). Cytotoxicity of PAC and PHS was assessed by MTT assay on mouse fibroblasts. 52 dentin slabs from human mandibular molars were randomly divided into 4 groups for FS analysis

Abstract In the last years, the use of adhesive bonding is increasing as an alternative to traditional joining techniques due to their advantages such as ease of application, low weight and the good mechanical properties. To ensure good adherence between the substrates, adequate materials and surface treatment are required. The main objective of this work is to evaluate the adherence of epoxy and polyurethane

Abstract The objective of this study was to verify the influence of glaze application on the shear bond strength between Y-TZP and veneering ceramic. Thirty square-shaped blocks (12.5 × 15 × 1.5 mm) of sintered zirconia (Vita In Ceram YZ for inLab, VITA Zahnfabrik) were prepared, randomly divided into three groups (n = 10), according to the factor ‘glaze application’ (c – control/ g – powder and liquid/

Abstract Since the late 90s the use of zirconia in dentistry increases, it is used for example for all-ceramic restorations, brackets and implants. This article will deal with all-ceramic restorations. For the production of these restorations many manufacturing steps are necessary: Pre-sintering of the ceramic powder, soft machining (pre-sintered condition), sintering and a pre-processing of the ‘finished’

Abstract This study evaluated the push-out bond strength of customized glass fiber posts in different regions of post space (cervical, middle and apical) submitted to mechanical cycling. Forty single-rooted human premolar teeth were submitted to endodontic treatment and divided into four groups, according to the type of fiberglass posts installed: customized or non-customized posts. Half of the samples

Abstract This study evaluated if using an MDP-containing ceramic primer combined with acid etching or without improves the microshear bond strength of resin cement to a zirconia-reinforced lithium silicate ceramic (ZLS). A total of 32 ZLS ceramic plates (Vita Suprinity) were prepared and divided according to the following adhesive procedures: primer (P), silane (S), hydrofluoric acid etching + primer

Abstract A nonlinear finite element (NLFE) model is proposed to predict the bond behavior between concrete and near-surface mounted (NSM) fiber-reinforced polymer (FRP). The model is validated, based on the results from an experimental program carried out by the present authors, before being employed to generate a wide range of data considering key parameters, such as grooves spacing (50–200 mm), and

Abstract The joining feasibility of natural fillers (wheat husk, rice husk and coir fiber) reinforced polymer composites has been studied. The different types of joints, i.e. adhesive joint (with and without hole), mechanically fastened, as well as hybrid joints (adhesive with riveting) have been analyzed in terms of their mechanical properties. The adhesive joints were found comparatively better in

Abstract A novel interface strengthening and toughening method of Steel/PEEK joints was proposed in this article. The multi-scale combined features consisting of macro grooves and micro conical hole array were constructed on the steel sheet surface. The shearing fracture behavior of the Steel/PEEK joints was studied to reveal the influence law and mechanism of the diameter-to-depth ratio γ of micro

Abstract This work deals with the study of the inhibition activity of three thiazolidinones (prepared from monoterpenic ketones) on the deterioration of S300 steel in hydrochloric acid solution. The potentiodynamic polarization was used to investigate the electrochemical behavior of the studied inhibitors which were revealed to be mixed type ones. It was established that the studied compounds have

Abstract Geckos have never failed to amaze the scientific realms with their fascinating innate characteristics. The species are adapted with a captivating pair of toepads that can reversibly attach to almost every surface, thus enabling them not only to climb vertically up but also to run across the ceilings. Moreover, the hierarchical fibrillar structure present in gecko’s feet provides an additional

Abstract Cyclic methacrylate monomer cyclohexyl methacrylate (CHMA) was evaluated as an alternative to traditional methyl methacrylate (MMA) as hard monomer in the application of acrylate latex pressure sensitive adhesive (PSA). The influences of CHMA on the resultant latex and PSA properties were comprehensively investigated. Both FTIR and 1H NMR analysis indicated that CHMA could be successfully

Abstract Boriding is a method used to increase the biocompatibility and strength of metallic materials. However, by this time, no study has been encountered in the literature regarding investigation of the effects of boriding on metal-ceramic bond strength of Co–Cr alloy fabricated by selective laser melting. Boriding of metallic surfaces may be an alternative to increase the roughness and adhesion

Abstract This paper investigated the bond behavior of deformed steel bars in self-compacting concrete (SCC). Specimens with different concrete compressive strength (18.4 MPa, 27.0 MPa, and 35.6 MPa), concrete cover size (2.0 Φ, 3.0 Φ, 4.2 Φ, and 5.0 Φ), and embedded length (3.0 Φ, 4.0 Φ, 5.0 Φ, and 6.0 Φ) were prepared and tested under pull-out loading. The bond stress distribution for deformed steel

Abstract The Daniellia oliveri, Ficus sycomorus, Butyrospermum parkii and Azadirachta indica barks tannins were extracted, used in the development of four different resins hardened with the Vachellia nilotica exudates and in the development of an unidirectional biocomposite reinforced with woven banana stalk fibers. The percentage yield of these tannins was, respectively, 29%, 46%, 40% and 35%. Their

Abstract Pyrazinecarboxylic acid (PCA) was examined as a potential corrosion inhibitor for mild steel (MS) in 0.5 M HCl environment. The methods of electrochemical impedance spectroscopy (EIS), linear polarization resistance (LPR), as well potentiodynamic (PD) polarization were utilized. Furthermore, atomic force microscopy (AFM) and quantum chemical calculations were utilized. PD polarization curves

Abstract In the present study, the effect of adhesion on axisymmetric contact problem for functionally graded material (FGM) coating-substrate system under the spherical indenter is considered. The linear multi-layered model is applied to model the functionally graded coating with arbitrarily varying material properties. The couple effect of adhesion parameter and gradient index is calculated based

Abstract The interests in biobased wood adhesives have been steadily increasing in recent years. Cottonseed protein isolate has shown potential as a renewable biobased adhesives. For a better understanding of the adhesive performance and mechanisms of cottonseed protein, we sequentially separated the isolated material into water-soluble (CSPw) and alkali-soluble (CSPa) fractions. The adhesive properties

Abstract With the popularity of dental bleaching, the need of immediate restoration following bleaching is increasing urgently. This study aimed to seek methods to improve the bonding strength to enamel of composite resin after bleaching. The best concentration and reaction time of Epigallocatechin gallate (EGCG) regarding bonding strength after bleaching were determined using micro tensile bond strength

Abstract Porosity is one of the significant defects existing in the weld seam of aluminum alloy by laser. In the current research, the evolution of porosity and grain coupling growth in the weld seam is realized via a Cellular Automaton-Finite Element simulation method. A detailed calculating method of three phases was proposed by taking into account the liquid/solid phase transformation on the nucleation

Abstract Thermoplastics and functional polymers are commonly used modifiers for epoxy (EP) resin. In this study, an EP system was fabricated and modified with methyl methacrylate block copolymer (BMG), polyphenylene oxide (PPO) and polysulfone (PSF). This was carried out to study the influence of thermoplastic polymers and functional polymers on the properties of EP resins, and the performance of the

Abstract The surface of stainless steel (SS) mesh was modified by in-situ growing carbon nanotubes (CNTs) from ethanol flame. Then the interfacial bond strength of SSM and polyetherimide (PEI) was improved by the CNTs-modified SSM, a heating element (HE) for the resistance welding of carbon fiber reinforced epoxy (CF/Epoxy) laminates. The effects of CNTs growth time (tg) on the wettability of PEI solution

Abstract The width tapered beam method for measuring fracture toughness has been contemplated for use in measuring the adhesion of photovoltaic materials, is promoted by it being a viable method for use directly on modules rather than to engineered test specimens. However, precise determination of crack length is often difficult as failure often involves tendril formation, cavitation voids, and other

Abstract Surface preparation of ultra-high modulus fiber composites for adhesive bonding is challenging due to the subsurface damages that can occur during a standard abrasion operation that could weaken the laminate cohesion. Therefore, it is highly desirable to utilize a non-contact method that can clean and activate the composite surface without exerting an external force to eliminate potential

Abstract This paper investigates the tribological effects of composite oxide coatings grown on ZA-27 surfaces under dry sliding condition. Coating processes were conducted using three different electrolytic solutions through micro-arc oxidation (MAO) method. The base electrolytic solution without any particles as additives was labeled as MAO-Coated, whereas electrolytic solution labeled as Coated-A

Abstract The post-buckling carrying capacity is a major concern in the engineering design of composite stiffened panels, and is obviously influenced by the properties of the skin-stiffener adhesive interface. This work investigated the influence of adhesive interface properties on the post-buckling response of composite I-stiffened panels with lateral rib support under axial compression. After the

Abstract Valve-controlled pneumatic jetting technology, which is characterized by high accuracy, fast dispensing speed, and strong adaptability, has been widely applied in the field of life sciences. This paper examines the formation and separation of droplets by reporting the comprehensive influence of system parameters on the morphological changes of droplets, which was simulated by using several

Abstract In this study, the effects of anionic monomer functional group type of the water-reducing admixture (WRA) on the fresh properties and compressive strength of self-compacting concrete (SCC) mixtures were investigated. Nine types of polycarboxylate ether-based high-range WRAs with the same main chains but different anionic monomers linked to the main chain were synthesized and used in different

Abstract The friction stir welding of 304 austenitic stainless steel and 430 ferritic stainless steel was performed by placing 304 plate on advancing side and retreating side of the tool, respectively. The results indicated that when the 304 plate was placed on advancing side, the weld metal showed superior flow characteristics and better material mixing compared to the weld when the 304 plate was

Abstract The present paper explores the simultaneous influence of rotational and traverse speeds on the macrostructure, microstructure, and mechanical characteristics of welds produced by the floating-bobbin friction stir welding of 20-mm-thick AlMg5 alloy plates. The macrostructure results revealed that the visual quality of the welds was reduced with an increase in the rotational speed due to the

Abstract An approach of adding graphene oxide (GO) nanosheets to enhance the joints for resistance welding glass fabric reinforced polyetherimide (GF/PEI) laminates was proposed in this study. The GO nanosheets were introduced and dispersed uniformly into the heating element (HE) of carbon fiber (CF) bundles coated PEI and the welding adhesives of PEI films in the different weight ratios. The GO nanosheets

Abstract To improve the interfacial adhesion between ultrahigh molecular weight polyethylene (UHMWPE) fiber and epoxy resin, the fiber were treated with polyethylene wax grafted methyl methacrylate (PEW-g-PMMA) alone or in combination with silane coupling agent. The factors affecting the interfacial bond property of fiber, e.g. grafting rate, coating temperature, concentration of silane coupling agent

Abstract Epoxy adhesives are common and useful materials in several fields, especially in making joints for the aerospace industry. Lately, there is a growing demand for this kind of adhesives to become more environmentally friendly. In this work, an environmentally friendly epoxy adhesive is developed using commercially available materials, exhibiting a 12% increase in green carbon content and 22%

Abstract Pulse-enhanced vacuum arc evaporation (PEVAE) is promising in surface engineering and produces coatings with better structure and properties. In PEVAE, the target-to-substrate distance (D t-s) affects the substrate ion current and ion bombardment energy which is closely related to the structure and properties of the coatings. In this work, TiN coatings are deposited on high-speed steel (HSS)

Abstract Actual endodontic and reconstructive concepts require posts. In this trail short posts with a coronal retentive head received tribochemical-surface coating (Tbc). The microtensile-bond-strengths (μTBS) of the new short posts with and without additional coating were compared with the conventional posts concerning post and luting material. Root canals of 120 freshly extracted human anterior-teeth