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bond adhesion strength

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Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290243
EISBN: 978-1-62708-306-5
..., pressure, and time. Historically, adhesives have produced relatively weak bonds. However, the revolution in polymer science that occurred during the 20th century has allowed adhesives with strengths approaching that of the bonded materials themselves. As a result, adhesive bonding has replaced other...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870235
EISBN: 978-1-62708-314-0
... components, adhesive bonding is frequently used for repairing damaged structural parts. Fig. 8.1 Examples of adhesively bonded joint configurations. Source: Ref 1 Adhesives used for structural bonding are cured at either room or elevated temperatures and must possess adequate strength to...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870449
EISBN: 978-1-62708-314-0
...°, 90° orientations are required to develop sufficient joint strengths, which lowers the basic laminate strength from a more highly orthotropic (0° dominated) laminate orientation. This chapter discusses mechanically fastened joints and adhesively bonded joints. Like the Chapter 16, “Structural...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290279
EISBN: 978-1-62708-306-5
... together by the action of a separate agent. These techniques have found wide use by virtue of their low cost and adaptability to high-speed production. In addition, solvent and adhesive bonds provide a relatively uniform distribution of stresses over the assembled areas and a high strength-to-weight ratio...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290001
EISBN: 978-1-62708-306-5
... for an adhesive-bonded structure. However, since high-strength adhesives are typically weak in peel, the lap joint should be loaded in shear. To effectively transfer loads through the adhesive, the substrates (or adherends) are overlapped so that the adhesive is loaded in shear. Typical adhesive...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870351
EISBN: 978-1-62708-314-0
... compression, bolt bearing, impact and compression after impact, and sometimes fracture toughness. Adhesive bonding test procedures include measurement of adhesive shear strength, measurement of peel strength, and tests to assess the quality of bonding to sandwich cores. In this chapter, only a brief...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870517
EISBN: 978-1-62708-314-0
..., injection, bolted, or bonded, as shown in Fig. 19.1 . Simple fill repairs are conducted with paste adhesives to repair such nonstructural damage as minor scratches, gouges, nicks, and dings. Injection repairs use low-viscosity adhesives that are injected into composite delaminations or adhesive unbonds...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290165
EISBN: 978-1-62708-306-5
... Abstract Brazing and soldering processes use a molten filler metal to wet the mating surfaces of a joint, with or without the aid of a fluxing agent, leading to the formation of a metallurgical bond between the filler and the respective components. This chapter discusses the characteristics...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550385
EISBN: 978-1-62708-307-2
.... In ceramic-matrix composites, the objective is often to increase the toughness rather than the strength and stiffness, and a low interfacial strength bond is therefore desirable. The type and quantity of the reinforcement determines the final properties. As shown in Fig. 8.3 , the highest...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550325
EISBN: 978-1-62708-307-2
... mechanical stress and immersed in a weak solvent. The cause appears to be a lowering of the cohesive bond energies when the normal polymer-polymer bonds, which sustain the mechanical stress, are replaced by the new polymer-solvent bonds, which cannot contribute to the overall strength of the material...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550457
EISBN: 978-1-62708-307-2
... modulus, 10 6 psi 24 Longitudinal strength, ksi 210 Transverse strength, ksi 60 Source: Ref 9.5 Successful joining of TMC components by diffusion bonding can be accomplished at pressures and temperatures lower than normal HIP runs. To process preconsolidated C-channels into...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550033
EISBN: 978-1-62708-307-2
... achievable strengths. It explains how some alloys are hardened through solution strengthening and cold working, while others are strengthened by precipitation hardening. It also describes production and fabrication processes such as melting, casting, rolling, forging, forming, extruding, heat treating, and...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870031
EISBN: 978-1-62708-314-0
... compression strength and fail under compression through kink band formation. Also, they do not form a strong bond to the matrix, which results in poor transverse tension and compression strengths. Because they are thermoplastic, polyethylene fibers are subject to creep under continuous loading, even at...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870001
EISBN: 978-1-62708-314-0
... interface. In ceramic matrix composites, the objective is often to increase the toughness rather than the strength and stiffness; therefore, a low interfacial strength bond is desirable. The type and quantity of the reinforcement determine the final properties. Figure 1.2 shows that the highest...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550223
EISBN: 978-1-62708-307-2
... Abstract Titanium is a lightweight metal used in a growing number of applications for its strength, toughness, stiffness, corrosion resistance, biocompatibility, and high-temperature operating characteristics. This chapter discusses the applications, metallurgy, properties, compositions, and...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170351
EISBN: 978-1-62708-297-6
... system by which they are defined, and the applications for which they are suited. It then explains how primary alloying elements, second-phase constituents, and impurities affect yield strength, phase formation, and grain size and how they induce structural changes that help refine certain alloys. The...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870255
EISBN: 978-1-62708-314-0
... the skin and core bond terminates. The majority of the damage is typically found at the edges of panels. Adhesive bond degradation will lower the skin-to-core bond strength, the fillet bond strength, and the node bond strength. Node bond degradation can reduce the core shear strength so that the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870183
EISBN: 978-1-62708-314-0
... lower bond strengths with thermoplastic composites than with thermoset composites. This is believed to be due primarily to the differences in surface chemistry between thermosets and thermoplastics. Thermoplastics contain rather inert, nonpolar surfaces that impede the ability of the adhesive to wet the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.tb.sfa.t52780109
EISBN: 978-1-62708-268-6
... failure can be induced by several causes: The loads may have exceeded the strength of the adhesive ( Fig. 12.7 ). The adhesive or epoxy may be too old (i.e., it may have exceeded its shelf life). If epoxy was used as the bonding agent, it may not have been properly mixed, or it may be an...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870333
EISBN: 978-1-62708-314-0
... of locally applied pressure due to bridging, entrapped volatiles (air, water, residual solvents), or contaminated skins or core. Although adhesive unbonds are detectable, there are no NDI methods currently available that will determine the strength of an adhesive bond. For example, a high-strength...