Abstract: This paper investigates the contribution of rib elements attached inner side of CFT for higher bond strength between steel tube and concrete and fire performance with no protections. Test results also present the work of beam’ s shape to fire resistance, the microstructure of concrete and the benefit of a paper drain that can be letting the redundant water out through the holes drilled on the tube plate. Discussions on beam’s design could be followed after some more fire tests accordingly conducted within this investigation.

• Publication Date: 24-Sep-2017
• DOI: 10.15224/978-1-63248-135-1-20
• Views: 0
• Downloads: 0

Abstract: Acoustic sensors based on MEMS technology is an emerging area of research. Harmonic analysis of these devices is seen to be deliberated recently. The response of a microstructure when subjected to acoustic waves depends upon its geometric properties as well as its material properties; therefore it is important to understand these properties at this level, generally referred to as Meso scale properties. This paper presents the design and modeling of MEMS acoustic sensor optimized for detecting direction of sound at particular frequency range related to small arms fire. Design and FEM modeling is carried out using gold based process design rules. The sensor is modeled with a structural layer of gold with 4.8 μm thickness. The sensor plates’ deflection amplitude varies when the applied pressure and angle of incidence is changed. Moreover, the stresses induced in the sensor, corresponding to the gunshot fire are analyzed to ascertain the fatigue effects.

• Publication Date: 24-Sep-2017
• DOI: 10.15224/978-1-63248-135-1-35
• Views: 0
• Downloads: 0