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 ...

The goal of this paper is to evaluate the strain-based partitioning method (SBM), an analytical based on beam analysis, for mixed-mode fracture characterization asymmetric cracks. energy calculated at crack tip bending (MMB) test with geometry and material parameters. obtained using SBM benchmarked against widely applied Williams’ (WM) numerical results from finite element models virtual closur...

In the framework of Cost Action CERTBOND (Reliable roadmap for certification bonded primary structures), a wide group researchers from 27 European Countries have had opportunity to work on topic joints structural applications different engineering sectors such as aerospace, automotive, civil engineering, wind energy and marine sectors. Since virtual testing optimization are basic tools in proce...

A software tool for automated crack onset and growth simulations based on the eXtended Finite Element Method (X-FEM) has been developed. For the first time, this tool is able to simulate arbitrary crack growth and composite delamination without remeshing. The automated tool is integrated with Abaqus/Standard and Abaqus/CAE via the customization interfaces. It seamlessly works with the Commercia...

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...

It is necessary to manage the fatigue crack growth (FCG) once those cracks are detected during in-service inspections. In this paper, a simulation program (FCG-System) is developed utilizing the commercial software ABAQUS with its object-oriented programming interface to simulate the fatigue crack path and to compute the corresponding fatigue life. In order to apply FCG-System in large-scale ma...

This study uses observations of mechanisms from previous work (the “undamaged cone”, toughness and extent of permanent out-of-plane deformation) to examine parametrically their effects on residual compression after impact (CAI) strength using finite element models. In previous experimental work, tougher material systems exhibited up to 30% greater CAI strength for a given damage area. Based on ...

This research presents the numerical evaluation of fatigue crack growth structural steels S355 and S960 based on Paris’ law parameters (C m) that are experimentally determined with a single edge notched tension (SENT) specimen using optical gauge measurements an electromotive resonance machine at constant amplitude load. The sustainable technique is replacing destructive, time-consuming expensi...

Offshore wind power production is an attractive clean energy option, but the difficulty of access can lead to expensive and rare opportunities for maintenance. As part of the Structural Health and Prognostics Management (SHPM) project at Sandia National Laboratories, smart loads management (controls) are investigated for their potential to increase the fatigue life of offshore wind turbine roto...