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Showing 1 to 18 of 18 for “"Structural Adhesives"”.
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Nonlinear viscoelastic characterization of structural adhesives
… of the nonlinear viscoelastic behavior of two adhesives, FM-73 and FM-300, are presented and discussed. Analytical methods to quantify the measurements are given and fitted into a framework of an accelerated testing and analysis procedure. The single integral model used is shown to function …
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Rate and time dependent behavior of structural adhesives
Studies on two adhesives (Metlbond 1113 and 1113-2) identified as having applications in the bonding of composite materials are presented. Constitutive equations capable of describing changes in material behavior with strain rate are derived from various theoretical approaches. It is shown that …
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The electrical and mechanical properties of structural adhesives
… based predominantly on metals. High performance structural adhesives are used to bond CFC panels together, though the performance characteristics of bonded joints in CFC panels differ considerably from those of bonded joints in metal and alloy panels, particularly with regard to the electrical …
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Structure-property behavior of novel high performance thermoplastic and thermoset structural adhesives and composite matrix resins
… and solvent resistant new networks suitable for structural adhesives and matrix resins have been identified. This was proven by characterization of these novel networks. Ninety-nine percent gel fraction networks were observed after cure at 380°C for 60 minutes. Thermomechanical properties such as …
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Synthesis and Characterization of Phenylethynyl Terminated Poly(arylene ether sulfone)s as Thermosetting Structural Adhesives and Composite Matrices
… properties are desired for use as aerospace structural adhesives and polymer matrix/carbon fiber composites. High molecular weight amorphous poly(arylene ether sulfone) thermoplastic materials display many of these desirable characteristics but are deficient in solvent resistance. Previous …
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Characterization and Development of General Material Models for Use in Modeling Structures Bonded with Ductile Adhesives
Structural adhesives are materials that are capable of bearing significant loads in shear, and sometimes tension, over a range of strains and strain rates. Adhesively bonded structures can dissipate large amounts of mechanical energy and can be lighter and more efficient than many bolted or …
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Environmental durability of FRP bond to concrete subjected to freeze-thaw action
… carbon FRP pultrued strips and three different structural adhesives for total of three FRP/adhesive combinations. Two types of concrete substrate were used: regular high strength and air-entrained concrete. The specimens were freeze-thaw cycled for three different numbers of cycles using two …
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Structure-property behavior of polyimide homopolymers, copolymers, and blends
… for use as environmentally stable, tough structural matrix resins, structural adhesives, and dielectric materials. Although polyimides are well suited for such high performance engineering applications due to their excellent thermal and mechanical properties, their typical intractability …
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Adhesive properties of silicone resins
… the possibility of an application such as structural adhesives. Single-lap shear tests were used to study several parameters, such as the thickness of the joint, the overlap length, the behavior at high temperature and a comparison with different adhesives. Results suggest that a 10% KPE / …
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Characterization of modified polyimide adhesives
… thermal imidization were investigated as structural adhesives for titanium. The solution thermal imidization procedure was found to result in favorable adhesive characteristics while the presence of siloxane segments in the polymer backbone improved the resistance of stressed specimens to …
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Comparing In Situ and Bulk Constitutive Properties of a Structural Adhesive
… the continuing quest for more efficient designs, structural adhesives are being used in place of, or with, traditional fastening methods; however designing with adhesives is refined as traditional methods. To obtain the adhesive design properties, tests are often performed on bulk tensile and …
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Adhesive bonding of stainless steel :Sstrength and durability.
… spot welding, bolting and riveting. For example, adhesives can be used to bond dissimilar materials, adhesive joints have a high stiffness to weight ratio and the stress distribution within the joint is much improved. Stainless steels are commonly used in applications that would clearly benefit …
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Adhesive bonding of stainless steel : strength and durability
… spot welding, bolting and riveting. For example, adhesives can be used to bond dissimilar materials, adhesive joints have a high stiffness to weight ratio and the stress distribution within the joint is much improved. Stainless steels are commonly used in applications that would clearly benefit …
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Avaliação da influência da espessura de adesivos estruturais em juntas metálicas com diferentes preparações superficiais
Structural adhesives have the ability to bond materials for a long time, withstand great stresses and offer advantages over the most common joining methods, such as welding and riveting, providing adhesive joints with excellent fatigue resistance. These adhesives are found in industries with more …
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Novel high performance thermosetting polyimides
… of 350°C or higher. Matrix composite and structural adhesives were also synthesized by the incorporation of triarylphosphine oxide moieties into the polyimide backbone, which generated char yields as high as 80% in air by TGA analysis. Thermally cured samples displayed excellent solvent …
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Synthesis and Characterization of Aryl Phosphine Oxide Containing Thermoplastic Polyimides and Thermosetting Polyimides with Controlled Reactivity
… adhesion strength, ideal as "primary" bonding adhesives. Acetylene and maleimide endcapped systems were prepared for application as "secondary" bonding materials, meaning that they are cured at a lower temperature than that of the Tg of the primary structure. Lap shear test results indicated …
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Crack path selection and shear toughening effects due to mixed mode loading and varied surface properties in beam-like adhesively bonded joints
Structural adhesives are widely used with great success, and yet occasional failures can occur, often resulting from improper bonding procedures or joint design, overload or other detrimental service situations, or in response to a variety of environmental challenges. In these situations, cracks …
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Performance Evaluation and Durability Studies of Adhesive Bonds
… for specific applications in areas spanning from structural adhesive joints to popular confectionaries such as chewing gum. In the first chapter, a double cantilever beam (DCB) specimen geometry is proposed for combinatorial fracture studies of structural adhesive bonds. This specimen geometry …