Steel side plate

A steel-conerete composite slab is newly available in construetion, of which concrete is placed in a steel mold that eonsists of steel side plates, top reinforcing bars and transverse ribs, and stud-planted bottom steel plates. Configuration of one t) e slab is shown Fig. 13.21. Compared with a reinforced concrete slab, this slab is expeeted to bear a large load- capacity and to have good enduranee. Although these eharacteristics are favorable for bridge construction, visual inspection is very difficult in particular, for concrete and its interfaee with steel plate. As a result, effective inspee-tion techniques for steel-concrete eomposite slabs are in demand and under development. 

The clad plate is x-rayed perpendicular from the steel side and the film contacts the aluminum. Radiography reveals the wavy interface of explosion-welded, aluminum-clad steel as uniformly spaced, light and dark lines with a frequency of one to three lines per centimeter. The waves characterize a strong and ductile transition joint and represent the acceptable condition. The clad is interpreted to be nonbonded when the x-ray shows complete loss of the wavy interface (see X-ray technology). 

Corrosion of steel separator plate on the anode side... 

In 1955, Aerojet-General Corporation issued a report (Higgins, 1955) that described a few experiments in which molten aJuminum (and other metals) were poured into water. The water vessel was a vertical 30-cm-diameter, 25-cm-long pipe with a steel bottom plate. The water depth was 23 cm. Metal was dropped from an overhead crucible, usually with a free fall of 51 cm before contacting the water. A barium titanate crystal pressure transducer was located in the side of the water vessel about 13 cm below the water surface. 

Fig. A.5 The base-plate is shown in (a) with the tourniquet belt slot indicated with the red arrow, the base-plate (bl) and cinch-assembly (b2) are shown together in (b) where b2 fit into bl and secured with the shoulder mounted screw-fasteners and the spring-steel stop-plate (red arrow) for controlling the travel of the cog-wheel containing the grasping spikes the reverse side of the cinch-assembly riveted to the top section and detailed in (d) that shows the contact between the stop and cog-wheel...

The chemical environment and the steel composition are constant, but the bottom plate is in intimate contact with the aluminum panel while such a contact is not present in the case of the side plate. Thus, the aluminum plate may have a role in the corrosion process. 

Two heavy steel plates 1.8 are held 5 or 15 cm apart. Tlie plates arc in a gaslight enclosure formed from steel sides with sheet polyethylene. The explosive cartridges are in the groove. The space inside the enclosure is filled with an explosive gas mixture. The ignition or non-ignition of the gas mixture is observed. 

The PEM cell design chosen for tlie current work employs a significantly different geometry than the Westinghouse cell. The PEM electrolyzer consists of a membrane electrode assembly (MEA) inserted between two flow fields. Behind each flow field is a back plate, copper current collector and stainless steel end plates. The MEA consists of a Nafion proton-exchange-membrane with catalyst-coated gas diffusion electrodes bonded on either side. 

Membrane Testing. The membranes were characterized on an RO test loop. Hollow-fiber modules were equipped with fittings as shown in Figure 4 to allow circulation on both sides of the membrane. Flat-sheet membranes were tested in special cells of the type shown in Figure 5 recirculation solution could be pumped into a port in the center of the cell and forced to flow through a sintered stainless steel support plate to reach the permeate side of the membrane. 

Construction details for Glasshopper I consist of a filament wound (FW) RP car body, RP/balsawood core sandwich panel bulkheads and slope sheets, steel side sills and shear plates, steel bolster webs, and RP hatch covers. Standard running gear and safety appliances were utilized, as were standard gravity outlets. Several changes in construction details... 

The fuel cell components have thicknesses as follows the anode is 0.8-1.5mm thick the cathode, 0.4-1.5 mm, the matrix, 0.5-1 mm. In a fuel cell of the filter-press type, the individual cells are separated by bipolar plates made of nickel-plated stainless steel, contacting the anode with their nickel side, and the cathode with their steel side. All structural parts are made of nickel or nickel-plated steel. In a working fuel cell, the temperature of the outer part of the matrix electrolyte is lower than that of the inner part, so that in the outer part the electrolyte is solidified. This provides for tight sealing around the periphery of the individual fuel cells. 

The panel was turned upside down and simply supported near the corner, as shown in Figure 8. The steel insert plate and its surrounding area were left completely free. To counterbalance the torque which was produced when the rod was pushing down on the bracket, dead weights were put on to the top side of the panel. The load was applied continuously and the load deflection curve was recorded autographically. One transducer measured the vertical displacement of the tip of the bracket. 

The cathode structure is complex and generally consists of an inner assembly and the shell. The former is made of cathode tubes, fabricated out of perforated steel plates in H-cells and wire mesh in MDC cells. The cathode tubes are held together on each side by a tube sheet in MDC cells. Stiffener straps provide structural support and vertical screens and horizontal rim screens complete the inner assembly. Thus, the components of the cathode shell are its side plates, rear end plate, gird bar, end connectors, side and end bars, lifting lugs, and hydrogen outlet, which are welded together. The cathode tubes run parallel to the current flow in both these cells. 

The pitting corrosion was due mainly to galvanic action between the FA and the stainless steel support rack. The fuel plate cladding (1060) and the side plate (6061 T6) also formed a galvanic pair, and the corrosion associated with this pair was less intense. Many FAs were inspected later with an underwater video camera. The pitting corrosion nodules, their sizes, distribution and location were investigated. 

Finally, the stainless-steel bipolar plate consists of a separator and current collectors. The plate is exposed to the anodic environment on one side and the cathodic environment on the other. The low oxygen partial pressure on the anodic side of the bipolar plate prevents the formation of a protective oxide coating and, on the cathode side, the contact electrical resistance increases as an oxide scale builds up. Active research is focused on finding alloys for bipolar current-collector materials that function well in both anodic and cathodic environments, have a low cost and ohmic resistance, and have good corrosion resistance [15]. 

The matrix-coated DIOS substrate with a piece of mouse brain tissue attached was mounted on a stainless steel MALDI plate with double-side conductive tape. 

Figure 5-63. A section through a high-load elastomeric building isolator showing the elastomer layers to ensure horizontal flexibility. Steel reinforcing plates give rigidity for vertical loads. This isolator resists wind loads elastically without perceptible movement, yields under earthquake loads, and deforms plasticly dampening side-to-side vibrations.

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