The effect of residual stresses on the strength, toughness and work of fracture of Si3N4/SiC multilayered composites with different SiC layers has been investigated. It may be an effective way to design and optimize the mechanical properties of Si3N4/SiC multilayered composites by controlling the properties of SiC layers. Si3N4/SiC multilayered composites with different SiC layers were fabricat...

Crack channelling in a brittle, flexural bilayer, composed of coating adhering to substrate finite thickness, is addressed for the case uniform moisture content (or temperature) variation. The linear stress profile within may lead three different fracture mechanisms, which are crack with delamination absent, length, and unbounded extent. Failure mechanism maps illustrate dependence active mecha...

In this study, a carbon nanotube (CNT) buckypaper was interleaved in carbon-fiber-reinforced polymer (CFRP) composite to improve the interlaminar fracture toughness. Interleaving film of laminate-type poses risk deteriorating in-plane mechanical properties. Therefore, shear modulus and strength were measured prior estimating To evaluate effect on toughness CFRP, double cantilever beam (DCB) end...

0167-6636/$ see front matter 2010 Elsevier Ltd doi:10.1016/j.mechmat.2010.09.001 ⇑ Corresponding author. Tel.: +1 617 253 7186; fa E-mail addresses: [email protected] (D. Lau (O. Büyüköztürk). Knowledge on durability of concrete/epoxy bonded systems is becoming essential as the use of these systems in applications such as fiber-reinforced polymer (FRP) in strengthening of concrete structures is be...

Increasing environmental concerns and pending government regulations have pressured microelectronic manufacturers to find suitable alternatives to Pb-bearing solders traditionally used in electronics packaging. Over recent years, Sn-rich solders have received significant attention as suitable replacements for Pbbearing solders. Understanding the behavior of intermetallics in Sn-rich solders is ...

Nowadays, due to high ratio of strength to weight, composite cylindrical shells are extensively used in a great variety of different industrial applications and under different cases of loads. In this study, the buckling of composite cylindrical shells was examined under uniform external pressure. The buckling analysis of composite cylindrical shells was first done by using theoretical relation...

Modified dynamic three-point-bending and compact shearing test configurations based on Hopkinson pressure bar (HPB) and crack detection gage (CDG) (Vishay Intertechnology, Inc.) were used for the determination of the dynamic mode I and mode II delamination-initiation toughness of a unidirectional graphite-fiber/epoxy composite made of P7051S-20Q-1000 prepregs (Toray Composites America). The tra...