The aim of this paper is to perform experimental modal analysis (EMA) of reinforced concrete (RC) square slabs. EMA is the process of determining the modal parameters (Natural Frequencies, damping factors, modal vectors) of a structure from a set of frequency response functions FRFs (curve fitting). Although, experimental modal analysis (or modal testing) has grown steadily in popularity since ...

We present a new model, called the dual-microfacet, for those materials such as paper and plastic formed by a thin, transparent slab lying between two surfaces of spatially varying roughness. Light transmission through the slab is represented by a microfacet-based BTDF which tabulates the microfacet’s normal distribution (NDF) as a function of surface location. Though the material is bounded by...

This paper presents a newly developed method for determining the influence of tensile membrane action on ultimate loading capacity two-way RC concrete slab. In this method, more realistic and two failure criteria slab panel are established. The has been validated against test results good agreement is achieved. Compared to region obtained from FEM (Vulcan), assumptions about focus ellipse equat...

s (underlined = graduate student; * = postdoctoral scholar) [128] Anderson, R.B., Long, S.P., Horton, B.K., Calle, A., and Stockli, D.F., 2014, New apatite and zircon (UTh)/He constraints on the timing of thrust-related exhumation in the southern Bolivian (21 ̊S) Andes: AGU Fall Meeting. [127] Barber, D., Stockli, D.F., Koshnaw, R.I., Horton, B.K., and Kendall, J.J., 2014, Detrital zircon U-Pb a...

The service environment of civil air defense engineering structures is relatively harsh, and the corrosion steel bars main reason for reducing durability concrete in engineering. A hybrid FRP–steel-reinforced (hybrid-RC) structure has excellent durability. Therefore, it a good choice to apply hybrid-RC structures. In order study blast resistance structures, close contact experiments were carrie...