In this paper a new method to determine the fracture properties and strain energy release rate for Carbon- Polyester composite has been introduced.  Fracture characteristics such as critical stress intensity factor and critical strain energy release rate for mode I, mode II and mixed mode loading were determined using Arcan type specimen. 130 layers of carbon fiber polyester woven composite wit...

Lifetime is a basic support for the thermal insulation function of barrier coatings (TBCs). Therefore, extending life span essential to develop next-generation TBCs. For this objective, columnar structure formed by vertical cracks appears make sense. However, underlying mechanism still unclear. This work scrutinizes influence periodic on cracking behavior in order tailor high strain tolerant A ...

Debonding crack propagation at the composite-to-steel interface has been found to be an important failure mechanism for wrapped composite joints under static and fatigue loads. Friction behind tip may deviate debonding of from linear-fracture-mechanics behaviour. This paper presents tests axial joints. 3D DIC optical fiber system is employed monitor displacements propagation. A finite element m...

Delamination fracture of a two-dimensional functionally graded multilayered four-point bending beam that exhibits non-linear behaviour of the material is analyzed. The fracture is studied analytically in terms of the strain energy release rate. The beam under consideration has an arbitrary number of layers. Each layer has individual thickness and material properties. A delamination crack is loc...

concrete is one of the most widely used materials in construction industry. many large and important structures such as power plants, bridges, dams and buildings employ concrete as main material. propagation of crack is considered one of the main reasons in failure of concrete structures. the process of formation and crack growth is one of the major and complex issues in concrete, because concr...

An experimental evaluation of mixed mode fracture tests conducted on adhesively bonded wood specimens using a dual actuator load frame is presented. This unit allows the fracture mode mixity to be easily varied during testing of a given specimen, providing improved consistency, accuracy, and ease of testing over a range of loading modes. Double cantilever beam (DCB) type specimens made of south...

The two-dimensional (2D) delamination growth in fiber-reinforced polymer (FRP) laminates with in-plane isotropy under Mode I loading condition was numerically investigated using finite element analyses. Two sizes of plate models were developed, focusing on different fracture stages. Cohesive elements employed to simulate the behavior presence large-scale bridging (LSB). influences pre-crack sha...

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...

Abstract Determination of S-N and Paris parameters form the two primary approaches as far fatigue testing is concerned. With many economic factors complexities involved in experimentation, these are not related to each other require implementation separate test standards for both them. In this work, an attempt made on interconvertibility experimental a numerical technique based virtual crack cl...

The plane strain problem of determining strain energy release rate, crack energy, and crack-opening displacement (COD) for a moving Griffith crack at the interface of two dissimilar orthotropic half-planes is considered. The problem is reduced to a pair of singular integral equations of second kind which have finally been solved by using Jacobi polynomials. Graphical plots of the strain energy ...