Rig tests

The coin-tap test is a widely used teclinique on thin filament winded beams for detection of disbonded and delaminated areas. However, since the sensitivity of this teclinique depends not only on the operator but also on the thickness of the inspected component, the coin-tap testing technique is most sensitive to defects positioned near the surface of the laminate. Therefore, it was decided to constructed a new scaimer for automated ultrasonic inspection of filament winded beams. A complete test rig illustrated in figure 6 was constructed in order to reduce the scanning time. While the beam rotates the probe is moved from one end to the other of the beam. When the scarming is complete it is saved on diskette and can then be evaluated on a PC. The scanner is controlled by the P-scan system, which enables the results to be presented in three dimensions (Top, Side and End view). 

Factory Mutual Corner Test. This is a large-scale comer test used to test building products (18—20). The test rig consists of three sides of a cube. The two walls are 15.24 and 11.58 m by 7.62 m tall. The ceiling is 9.14 x 15.24 m. The product to be tested is mounted on the walls and ceilings ia a manner consistent with the iatended use. The fire source is a 340 kg stack of wood pallets located ia the corner. In order to pass the test, no flame can propagate to any extremity of the walls or ceiling. The Factory Mutual flammabiHty apparatus is proposed to replace this test for certain appHcations (21). 

Slides Tungsten filaments, turbine blades, lead drain pipes and organ pipes, glaciers creep-testing rigs micrographs of creep cavities. 

Figure 4-125. Test rig components used in erosion research.

Figure 4-126. Overall arrangement of test rig used for erosion research.

The eapabilities of new eoatings are initially evaluated in the laboratory on speeially designed rainbow rotor test rigs to determine their eorrosion resistanee and effeet on meehanieal properties. 

Wind tunnel A fan-assisted test rig used to determine the air forces and flow patterns acting on model buildings or components. 

Determine the design controls you intend to impose over the design of test equipment, tools, test rigs, and other articles. 

The article hy Wilson and Flessner gives the dividing line as roughly 50 ft/s between slow flames that can be simply quenched and fast flames that must also be decelerated. Fast flames described in the article have speeds above 60 ft/s as opposed to turbulent flames, which are described as having speeds from 5 to 100 m/s in most venting systems. The test rig described in the article was composed of 6-inch diameter pipe. 

Standard Test Rig Test Gas Deflagrations Test Pressure Endurance Burn Test... 

In the majority of cases, the tests are conducted using a dead-weight lever-arm stress-rupture rig with an electric timer to determine the moment of fracture, but a variety of test rigs similar to those shown in Fig. 8.89g are also used. The evaluation of embrittlement may be based on a delayed-failure diagram in which the applied nominal stress versus time to failure is plotted (Fig. 8.103) or the specimen may be stressed to a predetermined value (say 75% of the ultimate notched tensile strength) and is considered not to be embrittled if it shows no evidence of cracking within a predetermined time (say 500 h). Troiano considers that the nature of delayed fracture failure can be described by four parameters (see Fig. 8.103) ... 

Stanners have designed a test rig (Fig. 19.12) which provides results that can be correlated with actual atmospheric exposure data. The rig has been designed to investigate a wide range of alloying elements in a development programme on slow-weathering steels for which it was essential to have a rapid, reliable and reproducible test that incorporated the specific atmospheric factors responsible for rust formation. 

A conventional optical test rig is shown in Fig. 2 [13]. A superfinished steel ball is loaded against the flat surface of a float-glass disk. Both surfaces can be independently driven. Nominally a pure rolling is used as shown in Fig. 2 that the disk is driven by a shaft and the ball is driven by the disk. 

All aspects of interferogram and experimental data acquisition and optical test rig control are provided by a computer program that also performs film thickness evaluation. It is believed that the film thickness resolution of the colorimetric interferometry measurement technique is about 1 nm. The lateral resolution of a microscope imaging system used is 1.2 /u,m. Figure 10 shows a perspective view of the measurement system configuration. This is an even conventional optical test rig equipped with a microscope imaging system and a control unit. 

The optical test rig consists of a cylindrical thermal isolated chamber enclosing the concentrated contact formed... 

Also the thermohydrolysis of the urea solution after the injection into the hot exhaust gas upstream of the SCR catalyst has been investigated at the diesel test rig. Urea solution was atomized about 3 m upstream of the SCR catalyst into the hot exhaust equivalent to a residence time in the pipe section of 0.1 s at 440°C. As expected for the thermolysis reaction, ammonia and isocyanic acid were found at the catalyst entrance at all temperatures (Figure 9.3). The 1 1 ratio of both components shows that only the thermolysis but not the hydrolysis is taking place in the gas phase. It can also be seen that the residence time of 0.1 s is not sufficient for the quantitative thermolysis of urea, as appreciable amounts of undecomposed urea were always found. The urea share even raises with lowering the flue gas temperature, although the residence time... 

However, the PVC powder was tested in a 52 mm internal diameter pipeline, 71 m in length, and found to exhibit unstable plugging in the vicinity of saltation or minimum pressure (i.e., prior to the fluidized dense-phase region). That is, dilute-phase transport was only possible on this test rig. Also, solids/gas loadings were quite low (e.g., max m 20). Note that the unstable plugging was accompanied by sudden increases in pressure and severe pipe vibrations. 

The determination of steady-state conveying characteristics for a given product and test rig has been the subject of a number of earlier investigations such as Mason et al. (1980) and Mills et al. (1982). A standardized test procedure also has been developed and presented by... 

Some typical examples of pneumatic conveying characteristics for three different fly ash samples conveyed on the same long-distance test rig are presented in Figs 11,12 and 13. Some important information regarding these materials and results is summarized below. 

Using a standardized test procedure (Wypych and Arnold, 1985b), determine test rig conveying characteristics, similar to those shown previously in Figs. 11-13. 

To demonstrate the scale-up accuracy of the above design equations, thirty-eight experiments were carried out (Pan and Wypych, 1992a) with a particular fly ash over a very wide range of conveying conditions (i.e., from dilute- to fluidized dense-phase) on the test rig Pipeline I shown in Fig. 14. 

Maurer, B., Glor, M., Liittgens, G., and Post, L., Test rig for reproducible generation of discharges from bulked polymeric granules, J. Electrostatics, 23 25-34(1989)... 

This can include X-ray devices and drum wheel test rigs. 

Drum wheel test rigs are available to check the performance of tyres with retreads. 

G Mass loss (mass loss through burning plus mass of drips falling from test rig) shall not be greater than 60 grams. 

For loose fillings, the test rig is lined with the specified FR polyester fabric. 

POLYURETHANE FOAM SHEETS OR BLOCKS. These are required to resist ignition source 5 (17 gram wood crib) of BS5852 Part 2 except that the flames may penetrate the full depth of the specimen and that the mass loss (due to burning and liquid residues falling from the test rig) shall not exceed 60 grams. 

FLAME IGNITION TESTS FOR PILLOWS AND CUSHIONS WITH LOOSE FILLINGS. With primary covers and loose fillings are tested to BS 5858 Part 2 with ignition Source 2 using the specified FR polyester fabric lining to the test rig. Cushions are additionally covered with the specified FR polyester fabric. 

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