An Integrated Framework to Evaluate Information Systems Performance in High-Risk Settings: Experiences from the iTRACK Project

Evaluation and testing are significant steps in developing any information system. More attention must be devoted to these steps if the system is to be used in high-risk contexts, such as the response to conflict disasters. Several testing methodologies are designed to guarantee that software fulfills technology requirements; others will assure...

Simulation of the Transition Phase for an Optimally-Controlled Tethered VTOL Rigid Aircraft for AirborneWind Energy Generation

Airborne wind energy (AWE) is an innovative renewable energy technology, with the potential to substantially reduce the cost of energy. This paper introduces a solution for one of the main challenges of AWE systems, which is the automated reliable launching of the airborne system component. Our launch system configuration consists of a rigid...

Mitigation plan and water harvesting of flashflood in arid rural communities using modelling approach: A case study in Afouna village, Egypt

This paper aims to propose methods to mitigate the risks of flash flood events in arid rural communities with poor infrastructure. A flash flood management case study was conducted at Afouna Village in Egypt, which is characterized by an arid climate and faced a devasting flash flood in 2015. First, the flash flood was modelled and it was...

Heat transfer and entropy generation abilities of MWCNTs/GNPs hybrid nanofluids in microtubes

Massive improvements in the thermophysical properties of nanofluids over conventional fluids have led to the rapid evolution of using multiwalled carbon nanotubes (MWCNTs) and graphene nanoplatelets (GNPs) in the field of heat transfer. In this study, the heat transfer and entropy generation abilities of MWCNTs/GNPs hybrid nanofluids were...

Magmatism at continental passive margins inferred from ambient-noise phase-velocity in the Gulf of Aden

Magmatism on rift flanks: Insights from ambient noise phase velocity in Afar region

During the breakup of continents in magmatic settings, the extension of the rift valley is commonly assumed to initially occur by border faulting and progressively migrate in space and time toward the spreading axis. Magmatic processes near the rift flanks are commonly ignored. We present phase velocity maps of the crust and uppermost mantle of...

Computational Modeling of Progressive Failure in FRP Composite Laminates Subjected to Static and Impact Transverse loading

In order to arrive at safe and reliable design of composite structures, understanding of the mechanisms and mechanics of damage growth in these materials is of paramount significance. Numerical models, if designed, implemented and used carefully, can be helpful not only to understand the mechanisms and mechanics of damage growth but also to...

Computational modeling of impact damage in laminated composite plates

A numerical study on interacting damage mechanisms in FRP laminated composite plates

Experimental testing and numerical analysis often travel in tandem in a design process. Recent advances in novel numerical techniques to simulate mesh objective crack propagation offer a great potential for accurate and efficient damage analysis of composite laminates. This paper presents a numerical study on computational modeling of mesh...

Progressive damage in [0/90]s laminated plates (poster)

Numerical analysis of progressive damage in fiber-reinforced laminated composite plates is a challenge due to the presence of different, complex failure mechanisms and their mutual interaction. A meso-scopic progressive failure model is presented to simulate interacting damage mechanisms (matrix cracking and delamination) in laminated composite...

A partition-of-unity method for modeling coupled thermo-mechanical problems in frp laminates subjected to impact

A finite element procedure for modeling progressive damage in laminated composite shell structures

A computational model for prediction of progressive damage in laminated composites

A finite element model based on solid-like shell elements is presented for the simulation of progressive damage in laminated composite structures. To model mesh independent matrix cracking, a discontinuous solid-like shell element (DSLS) is utilized. The shell element has only displacement degrees of freedom, thus avoids the need for a...