Test Set-up

The polymer concrete samples were mixed according to the polymer concrete test method 1.0 of the Society of Plastic Industry (referred to as SPI 1.0) [1-6]. The samples were mixed using a conventional concrete mixer for a period of about 3 min, poured into moulds, vibrated and cured at room temperature according to ASTM C1479 [1-7]. There are no standard tests that are directly applicable to polymer concrete specimens therefore, ASTM standards developed for cement were adopted as applicable guidelines. 

In order to avoid creep failure, constant stress ratios of 20% of the ultimate flexural strength shown in Table 4.4 were applied to the creep specimens. 

The flexural creep test can be conducted in a frame that is less expensive to manufacture and much easier to handle than a compressive creep test frame. The small size of the flexural creep frame makes it possible to place it in an environmental chamber and carry out creep tests at temperatures other than 20 °C. 

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Fig. 4. Schematic of an ultrasonic nondestmctive testing set-up of material of length, T.

Owing to the greater test uneertainties assoeiated with field testing as eompared to planned shop testing, the warranty and guarantee should be modified to take into aeeount the nonideal test set-up. 

Figure 4.2. Hemispherical balloon tests set-up as used by Lind and Whitson (1977).

Because it is concave and elliptical, the secondary mirror of a Gregorian telescope allows for simpler fabrication test set-ups, as a point-like source placed at one of the foci of the ellipse should be re-imaged aberration-free at the other focus. Convex hyperbolic mirrors require more complex set-ups. This disadvantage is usually more than balanced by the more compact arrangement, the savings implied by the shorter telescope structure and more compact enclosure offsetting the additional cost and complexity of the secondary mirror test set-up. This trade-off, however, applies in the context of current technology-... 

The equipment is quite adequate for screening purposes. In its simplest form (i.e., a glass tube in an oven), it is a relatively low cost technique that can be assembled with standard laboratory equipment. However, the simple test set-up provides no quantitative thermal data for scale-up purposes, but only T0 values. The more advanced instruments like the SEDEX and SIKAREX, which are also isoperibolic calorimetry equipment, acquire specific thermal stability data that can be used for scale-up. Furthermore, the small autoclave tests provide gas evolution data. 

FIGURE 2.28. Test Set-up of the TNO 50/70 Steel Tube Test (dimensions in mm). 

If specified, the vendor shall test to demonstrate that the pump and its baseplate assembly, anchored at foundation bolt hole locations, are in compliance with 6.3.5. The pump casing shall be subjected to moments MTc and MZc applied to either nozzle, but not both, such that the corresponding shaft displacements can be measured and recorded. MYc and MZc shall not be applied simultaneously to either nozzle. The shaft displacement measurements shall be absolute (not relative to the baseplate). For record purposes, the vendor s test data shall include a schematic drawing of test set-up, the calculated moment loads 0/Fcand MZc), and the applied moment loads and their corresponding displacements at the drive end of the pump shaft. 

Detailed description of "calibration procedure is given on pp 4-26. Fig 2A, p 6 (not reproduced here) illustrates the "Test Set-Up for Obtaining the Shock Velocity with a Smear Camera and Fig 3A, p 8 "Smear-Camera Set-Up for Measuring Free-Surface Velocity , "Summary and Conclusions are given on pp 24-6 and Refs on pp 27-8 of the report... 

The strain measurement test set-up consisted of linear array of shat and gage holes, as shown in Fig Ex 15. The holes were drilled in solid rock about 25 ft deep and at a distance from any free face, so that charges detonated at the bottom of the shot... 

One interesting measurement that can be made on this circuit would be the stability. In order to measure the stability in the lab, a special test configuration is used. This test set up is shown in Fig. 4.2. The injection signal must be kept very small (700 /xV is suggested), and the measurement probes should be placed at R and A on the diagram in... 

Price and Liddiard, in their extensive study (Ref 17) of shock initiation in the gap test (see Vol 6, G13-R) give the following input shock press amplitudes for 50% thresholds (Vi the tests were detons and Vi the tests were failures) for RDX in their SSGT (small scale gap test) set-up (5.1mm ID test expl columns, 38,1mm long, confined in 25.4mm OD brass... 

Figure 6.16 Schematic diagram of the purging procedure of a Group I p apparatus and purging type test set-up.

Fig. 7.23 Small Scale Shock Reactivity Test (SSRT test) schematic drawing (top left), photograph of test set-up (top right) and dents in solid aluminum disks after the test.

Figure IH- is a photograph of a typical test set up. The open shield door was closed during the test.

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