Progressive collapse is a situation where local failure of a primary structural component leads to the collapse of adjoining members which, in turn, leads to additional collapse. Hence, the total damage is disproportionate to the original cause. The most common local failure in framed structure is assumed to be column failure. In this paper, a new approach for dynamic column removal in framed s...

SUMMARY Use and interpretation of wireline lookahead VSP combined with LWD seismic while drilling and LWD sonic log for base of salt prediction, a case study offshore Brasil deep offshore Campos. It aimed to assist drilling decisions by obtaining a more accurate prediction of Base of Salt depth. Setting the 9-5/8" casing point was key from a drilling perspective.

In this paper, a novel approach is proposed to investigate the progressive collapse damage of prismatic thin walled metal columns with different regular cross sections, under the action of axial quasi-static and impact loads. The present work mainly focuses on implementation of some important factors which have been neglected in other studies. These factors include the effect of reducing impact...

Considering the vulnerability of double-layer grid space structures to progressive collapse phenomenon, it is necessary to pay special attention to this phenomenon in the design process. Alternate path method is one of the most appropriate and accepted methods for progressive collapse resistant design of structures. Alternate Path Method permits local failure to occur but provides alternate pat...

A good turbine casing cooling design should control the thermal stress and maintain a reasonable tip clearance between blade casing. Since inlet temperature has been increased yearly, influence of radiation on become more significant. Therefore, heat transfer characteristics considering effect need to be precisely predicted. In this study, theoretical model is established for describing turbofa...

The antennas installed in mobile devices are small and low-profile compared to wavelength at the operating frequency. In general, horizontal elements short monopole have low radiation resistance. Low resistance requires matching circuit between 50 Ω feed line decreases efficiency. By using characteristic mode, excitation of ground plane improve has been investigated. This paper proposes structu...