Cohesive-zone models have been used to study the effects of strength and toughness on the delamination of beam-like geometries. The conditions under which linear-elastic interfacial mechanics provide a good frame-work for predicting failure of such systems have been studied. It has been determined that the phase angle derived from LEFM calculations provides an excellent description of the parti...

The distinguishing characteristics of carbon fibre reinforced laminates, like low weight, high strength or stiffness, had resulted in an increase of their use during the last decades. Although parts are normally produced to “near-net” shape, machining operations like drilling are still needed. In result of composites non-homogeneity, this operation can lead to delamination, considered the most ...

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...

The effects of temperature and degree tempforming deformation on the microstructure impact toughness high-strength low-alloy 25KhGMT steel have been considered. Tempforming forms a lamellar composed grains subgrains that are strongly elongated along rolling direction. average size grain section is 570–790 nm. Deformation texture includes ?001? || ND ?111? fibers. increases fracture work this at...

Mixed-mode delamination is one of the common failures composites which has not been studied under low-impact loading. This paper studies influence displacement rate on mixed-mode I/II unidirectional carbon/epoxy composites. Single leg bending test performed at rates 1, 10, 100, and 500 mm/min. Experimental results reveal that fracture toughness invariant with rate. In addition, scanning electro...

identical slip planes) and walls or kink boundaries. Thus, in addition to regular slip, mechanisms for ambient temperature The cyclic fatigue behavior of reactive hot-pressed Ti3SiCz plastic deformation in Ti3SiCz are thought to involve the ceramics are examined at temperatures from ambient to 1200°C readjustment of local stress and strain fields from kink band with the objective of characteriz...

Blistering, delamination, substrate deterioration Blistering, delamination, corrosion Blistering, reduced cohesion, film splitting, delamination Blistering, reduced cohesion, delamination, corrosion Blistering, intercoat delamination From components of paint film (e.g., inhibitive pigments, solvents, additives, etc.) From components of lower paint films (e.g., inhibitive pigments, solvents, add...