We use cookies to distinguish you from other users and to provide you with a better experience on our websites. Close this message to accept cookies or find out how to manage your cookie settings.
We use cookies to distinguish you from other users and to provide you with a better experience on our websites. Close this message to accept cookies or find out how to manage your cookie settings.
Published online by Cambridge University Press: 04 February 2010
In composites the role of the interface is crucial. Stiffening and strengthening rely on load transfer across the interface, toughness is influenced by crack deflection/fibre pull-out, and ductility is affected by relaxation of peak stresses near the interface. Unfortunately, however, a great deal of confusion surrounds the question of how best to characterise, and then optimise, the mechanical response of the interface to stresses arising from an applied load. In this chapter, a brief outline is given of the meaning and significance of interfacial bond strength, followed by a summary of the methods used to measure interfacial mechanical properties, with particular reference to fibrous MMCs. Some attention is then devoted to interfacial chemical reactions. Finally, the production and characteristics of fibre coatings are briefly examined.
The significance of interfacial bond strength
In the previous two chapters it has become clear that many important phenomena can take place at the matrix/reinforcement interface. For polymer-based composites, although the chemistry involved may be complex, the objectives in terms of interfacial properties are often the rather straightforward ones of a high bond strength (to transfer load efficiently to the fibres) and a good resistance to environmental attack. In designing ceramic composites, on the other hand, the aim is usually to make the interface very weak, as the prime concern is in promoting energy dissipation at the interface so as to raise the toughness. For MMCs, a strong bond is usually desirable, but there may be instances where inelastic processes at the interface can be beneficial.
To save this book to your Kindle, first ensure [email protected] is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.
Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
Find out more about the Kindle Personal Document Service.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Dropbox.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.
