E Edge Crack, Bimaterial Systems Meftah Hrairi 1 and Abdel-Fattah Rizk 2 1 Department of Mechanical Engineering, International Islamic University Malaysia, Kuala Lumpur, Malaysia 2 Department of Engineering Mathematics and Physics, Alexandria University, Alexandria, Egypt Synonyms Bonded dissimilar materials; Fracture mechan- ics; Stress intensity factor Overview The multilayered structure components of dis- similar materials with different thermome- chanical properties under thermal stresses are used in many engineering applications to protect the base metal from thermal and corrosion dam- age. For example, ceramic thermal barrier coat- ing is used in jet engines, stainless steel cladding is used in pressure vessels and pipes, and a variety of bonded materials are used in microelectronic devices. The analytical solution as formulated in edge crack, isotropic material, which is applica- ble to isotropic, homogeneous, linearly elastic plates, is further specialized here to the case of plates made of two bonded dissimilar materials. Indeed, the problem of thermoelastic edge crack- ing in two-layered bimaterial systems subjected to convective heating is considered. The medium is assumed to be insulated on one surface and exposed to sudden convective heating on another surface containing the edge crack. It is known that, when a bimaterial system’s surface is heated, compressive stresses arise near the heating sur- face, forcing the crack surfaces to come together over a certain cusp-shaped contact length. It is also known that, for a cooled bimaterial system’s surface, tensile stresses take place close to the cooling surface and tend to open the crack. So, the edge cracked heating surface problem is treated as an embedded crack with a smooth clo- sure condition of the crack surfaces, with the crack contact length being an additional unknown variable. Superposition and uncoupled quasi- static thermoelasticity principles are adopted to formulate the problem. By using a Fourier inte- gral transform technique, the mixed boundary value problem is reduced to a Cauchy type singu- lar integral equation with an unknown function as the derivative of the crack surface displacement. The analysis is based upon the same simplifying conditions as in edge crack, isotropic material, R.B. Hetnarski (ed.), Encyclopedia of Thermal Stresses, DOI 10.1007/978-94-007-2739-7, # Springer Science+Business Media Dordrecht 2014