Steel-concrete composite (SCC) beams are widely employed in bridge decks. The interfacial shear transfer between the top concrete slab and supporting steel significantly affects overall load carrying capacity performance of a deck. inaccessibility connection system makes visual inspection difficult, traditional vibration-based methods insensitive to this type local damage. In study, novel inter...

Experimental demonstrations of two edge-pumped zigzag slab lasers are presented. The Nd:YAG slab laser generated 127 W of multimode output power with 300W of pump power. Preliminary results with a Yb:YAG slab produced 46 W of output power with 315W of pump power. The edge-pumped slab design permits symmetric conduction cooling and efficient pump absorption and accepts large-numerical-aperture p...

Fractures of the third carpal bone (C-3) include small osteochondral fragments (chip fractures), frontal slab fractures of the radial (most common) or intermediate fossae, or both, sagittal slab fractures, most commonly occurring in the radial fossa, and table surface collapse resulting in subchondral lucency of C-3. Small osteochondral fragments are the most common fracture type, and involve o...

Methods of preparing test specimens in laboratories are particularly important. It also holds true in terms of compaction procedure in predicting pavement performance. The currently available laboratory compactor cannot adequately replicate field compaction conditions, especially the Stone Mastic Asphalt (SMA) mixture. The essential element of SMA mixture comprises of stones that are placed nex...

Earthquake loss estimation in composite-steel moment resisting frames (MRFs) necessitates a proper of the level damage steel beam-to-slab connections. These usually feature welded headed shear studs to ensure composite action between concrete slab and beam. In partially beams, earthquake-induced surrounding occurs due stud slip demands. Within such context, this paper proposes slip-based fragil...

S U M M A R Y Rapid changes in slab geometry are typically associated with fragmentation of the subducted plate; however, continuous curvature of the slab is also possible. The transition from flat to normal subduction in southern Peru is one such geometrical change. The morphology of the subducted Nazca Plate along this transition is explored using intraslab earthquakes recorded by temporary r...

There is growing use of FRP composite materials in the civil infrastructure for rehabilitation of deficient bridge components including deck slabs and girders. However assessment of the effectiveness of rehabilitation over time and monitoring the progression of damage or change in load paths between the structural components, caused by sequential strengthening of the components, has not been un...

In this paper, we investigate theoretically the waves propagation in a lossless double-negative grounded slab (DNG). This study is performed by the Transverse Resonance Method (TRM). The proper or improper nature of real and complex modes is observed. They are highly dependent on metamaterial parameters, i.e. ɛrnegative, μr-negative, or both. Numerical results provided that only the proper comp...

[1] Shear-wave splitting observations from many subduction zones show complex patterns of seismic anisotropy that commonly have trench-parallel fast directions. Three-dimensional flow may give rise to trench-parallel stretching and provide an explanation for these patterns of seismic anisotropy. Along-strike variations in slab geometry produce trench-parallel pressure gradients and are therefor...