Compression clamp

Large reservoirs and sumps should be equipped with inspection hatches and should have lips, gaskets, and compression clamps/bolts to control accidental dirt entry, ingression (dirt, wash-down sprays, etc.), and air movement. 

FIGURE 10.14 Diagrammatic representation of the compression clamp geometry. (Adapted from Dynamic Mechanical Analyser 2980 Operator s Manual, TA Instruments, New Castle, DE, 1996.)... 

All tanks were open-toppe right-circular cylinders with a flat-bottom disk welded in place. The stainless-steel sleeves were rolled to fit closely over the cylinders and then compression clamped for a better fit once, in place. All materials used were nominally 0>32 cm thick exc the tank bottoms for the suigle-u tit experiments, which were twice that thick. Atiinainum interiors that might Contact the slightly acid solution were protected with a thin coat of epoj iaint., ... 

In vacuum and blow forming, sheets produced by extrusion are shaped by vacuum or pressure forming. Heat-softened sheet is pressed into a mould by atmospheric pressure when a vacuum is created between the mould and the sheet. Fig. 24.4(a). Plastic bottles are made by blowing instead heated tube is clamped in a split mould and expanded with compressed air to take up its shape (Fig. 24.4b). Both methods are cheap and quick, and can be fairly accurate. 

Quetsch-fuss, m. Elec.) pinched base (of a lamp), -grenze, /. compression limit, compressive yield point, -hahn, m., -klemme,/. pinchcoek, pinch clamp. -mUhle,/, bruising mill, crushing mill. 

Compression presses are produced in various sizes throughout the world. In general, shaft seals are manufactured on presses with platen sizes in the range of 350 X 350 mm to 715 x 715 mm with clamp loads in the range of 1500 kN to 4000 kN. 

With the shear-type coupling, the elastomeric element may be clamped or bonded in place, or fitted securely to the hubs. The compression-type couplings may be fitted with projecting pins, bolts, or lugs to connect the components. Polyurethane, rubber, neoprene, or cloth and fiber materials are used in the manufacture of these elements. 

In this method of jointing stoneware piping, the joint is formed by a gasket between ground ends of the pipe, the joint being put under compression by a metal clamp. The choice of gasket material will of course depend upon service conditions. 

Based on the results of the calculations, it should be mentioned that the first pyroelectric coefficient seems to be significantly higher than the measured value even at room temperature. This high value of the coefficient can be achieved by clamping (compressing) the sample. 

Since the ends of compression specimens usually tend to flower and not remain rigid, test results are usually very scattered requiring close examination as to what the results mean in reference to the behavior of the test specimens. Different clamping devices are used to eliminate the flowering action that could provide inaccurate readings that in turn influence results by usually making them stronger. 

FIG. 17 Schematic illustration of the setup for a tip-dip experiment. First glycerol dialkyl nonitol tetraether lipid (GDNT) monolayers are compressed to the desired surface pressure (measured by a Wilhehny plate system). Subsequently a small patch of the monolayer is clamped by a glass micropipette and the S-layer protein is recrystallized. The lower picture shows the S-layer/GDNT membrane on the tip of the glass micropipette in more detail. The basic circuit for measurement of the electric features of the membrane and the current mediated by a hypothetical ion carrier is shown in the upper part of the schematic drawing. 

Fabrication was done by photolithography and deep reactive ion etching (DRIB). The catalyst was inserted by sputtering. Such a prepared microstructure was sealed with a Pyrex cover. The bonded micro device was placed on a heating block containing four cartridge heaters. Five thermocouples monitored temperature on the back side. A stainless-steel clamp compressed the device with graphite sheets. 

We perform flexural testing on polymer rods or beams in the same basic apparatus that we use for tensile or compressive testing. Figure 8.6 illustrates two of the most common flexural testing configurations. In two-point bending, shown in Fig. 8,6 a), we clamp the sample by one end and apply a flexural load to the other. In three-point bending, shown in Fig. 8.6 b), we place the sample across two parallel supports and apply a flexural load to its center. 

Chang et al. [183] presented a similar design in which two discs (with orifices in the middle) were used to compress the sample material. Pressurized air (without any moisture) was then passed through the orifices of fhe discs toward the sample DL, which then flowed peripherally to the atmosphere. The two discs were compressed in order to see how the permeability of the DL changed as a function of the clamping pressure. The permeability coefficient was solved using Darcy s law thus, only the viscous in-plane permeability was taken into account. Other, similar techniques can be found in the literature [215-217]. 

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