Ionomers are interesting due to their applications in coatings, adhesives, films and packaging materials. A study of the underlying mechanisms for fracture in ionomers is consequently of both practical as well as theoretical interest. In this study, we employ high speed imaging coupled with uniaxial extensional rheometry to delineate the mechanics leading to the brittle fracture of ionomer melt...

initial cracks occur in high strength concrete sleepers for various reasons, such as shrinkage and wrong curing and long lifetime of over 50 years of sleepers. these cracks may lead to complete failure of the structure. in order to more accurately design the sleepers, fracture mechanics (not strength of materials) should be incorporated. in order to achieve this purpose, it is important to fore...

Adhesively bonding has been increasingly used for numerous industrial applications to meet the high demand lightweight and safer structures. Debonding of adhesively bonded joints is a typical mixed mode failure process. It highly depended on interactional effects material properties geometric definitions constituents, which very complicated. The existing studies in identifying fracture modes ba...

Modeling of crack propagation by a finite element method under mixed mode conditions is of prime importance in the fracture mechanics. This article describes an application of finite element method to the analysis of mixed mode crack growth in linear elastic fracture mechanics. Crack - growth process is simulated by an incremental crack-extension analysis based on the maximum principal stress c...

Under low confinement axial compression, the failure of brittle rock is mainly caused by tensile fracture. Many scholars adopt sliding crack as an idealized model to present intrinsic mechanism but due complex configuration crack, its stress intensity factor (SIF) calculation has always been a difficult problem. In this study, improved proposed; in context linear elastic fracture mechanics (LEF...

Welding is a commonly applied joining method in many applications arctic and marine conditions, e.g., ship offshore structures, energy production equipment. Such are usually subjected to fluctuating load during decades-long service, they may experience millions of cycles. Consequently, fatigue strength design acceptable flaw sizes the welded details these structures among most important criteri...

To investigate the fatigue performance of stud connectors steel-concrete structures, crack propagation analysis and life calculation were carried out. Firstly, finite element model with initial based on linear elastic fracture mechanics (LEFM) was established, parameter stress intensity factors (SIFs) studs cracks different geometric sizes performed. Then, mixed-type I-type calculated, variatio...

Scaling laws arc the most fundamental aspect of every physical theory. Recently. the problem of scaling law and size effect in the theories of structural failure has received considerahle attention, particularly with regard to distrihuted damage and nonlinear fracture behavior. The paper presents a rigorous mathematical analysis of scaling in various types of failure theories in structural mech...

Shear testing is one of the most complex testing areas where available methods and specimen geometries are different from each other. Therefore, a modified shear test specimen (MSTS) combining the simple uniaxial test with a zone of interest (ZOI) is tested which gives almost the pure shear. In this study, material parameters of polypropylene (PP) and high density polyethylene (HDPE) are first ...