Test mode

In case of some samples besides the cross sectional CT-slice also a projectional image is of interest. In these cases the test mode Digital Radiography (DR) is applied. In the DR-mode the object is not turned, but scanned horizontally and vertically. Again the very high dynamic of the detector and the mechanical accuracy of the complete system are of large benefit to the image quality. 

If only one type of data is available (e.g. tensile creep curves) then it is possible to make conversions to the other test modes. It should always be remembered, however, that these may not always be absolutely accurate for plastics under all situations. 

The structure of a neural network forms the basis for information storage and governs the learning process. The type of neural network used in this work is known as a feed-forward network the information flows only in the forward direction, i.e., from input to output in the testing mode. A general structure of a feed-forward network is shown in Fig. I. Connections are made be-... 

Testing mode Basically material fatigue failure is the result of damage caused by repeated loading or deformation of a structure. The magnitudes of the stresses and strains induced by this repeated loading or deformation are typically so low that they would not be expected to cause failure if they were applied only once. 

Figure 1. Specific charge (thick line) and discharge (thin line) capacity of tin electrode without annealing. Bronze interface is absent. Current collector - copper. Testing mode C/5. Counter electrode - lithium foil. Separators - 2 layers of unwoven polypropylene (Mogilev, Belarus).

Note that the usual testing mode for compliance is constant load or constant loading rate, so to obtain truly useful data, some means must be taken to compensate for the change in area. 

Figure 4 Some test modes for measuring shear response. Arrows indicate direction of the force or displacement applied to that surface.

The constant-jaw displacement rate test mode is most frequently used. It meets most of the requirements for mass testing such as in the quality control situation, but various test analysis methods have made it quite suitable for design as well as research purposes. Displacement rates from 0.2 to 20 inches/min. are normally used, but some testing equipment provides reasonably controlled rates upwards of 10,000 in./min. Extremely low rate tests are time consuming, of course, but some specialized equipment has been designed to produce strain rates down to 8 X 10 7 inches/min. (1, 4). 

Other test modes, such as constant loading rate and variable strain rate, have been used on a limited basis as research techniques to investigate such phenomena as the path dependence of failure, but no general description of these tests can be provided. Of course the entire area of dynamic testing and fatigue uses various specialized test conditions, but these are discussed later. 

Generally applicable mathematical representations of the dilational behavior of propellants have not been developed, as might be expected however, Fishman and Rinde (29) have derived empirical expressions for the formulations which they studied. These relationships give reasonable description of uniaxial behavior over wide ranges of strain, time, and temperature for several testing modes. Equation 1 is representative of one of the generalized expressions for the polyurethane and polybutadiene formulations studied. 

As indicated by Fig. 2, there are several testing modes (1) pulse-echo mode, (2) through-transmission mode, (3) reflector-plate mode, and (4) angle-beam mode. 

The effect of silanes on the bond strength of two epoxide adhesives to glass is shown in Table 13. The test mode was that of Sandwich Butt Tensile in which a glass disc was bonded between two aluminium specimens in the form of a sandwich, and the resulting composite specimen broken on an Instron Universal Test Machine. Clearly in such a composite test specimen, alignment is important and there are many potential sites and modes of failure. 

The temperature range of the DMTA is from -150°C to 300°C and frequencies from 0.033 to 90 Hz. The sample size for the usual flexural test mode is 1 mm x 10 mm x 40 mm slightly less sample is required in the parallel plate shear mode. 

The first block DIV is a frequency divider. This block has 2 modes of operation, the normal mode and the test mode. In the test mode, the UART chip runs 16 times faster than in the normal mode. Also, the transmission data rate of the UART chip is 16 times faster than the receiving rate. Each block is initialized by setting the reset line low by applying a 0 to port MR. The TX block accepts 8-bit parallel data from the microprocessor interface (MP) block and transmits it serially to the RS-232 port through port DOUT. Conversely, the RX block receives serial data input, and sends it in 8-bit parallel format to the MP block. Again, the transmitter runs at 16 times the speed of the receiver. The microprocessor interface (MP) block asynchronously controls the parallel data flow between the RX / TX blocks and the microprocessor data bus. 

Testing Mode Free layer or sandwich uniform Shear bending Shear bending... 

Before performing a product bacteria challenge test, it has to be assured that the liquid product does not have any detrimental, bactericidal or bacteriostatic, effects on the challenge organisms. This is done utilizing viability tests. The organism is inoculated into the product to be filtered at a certain bioburden level. At specified times, the log value of this bioburden is tested. If the bioburden is reduced due to the fluid properties, a different bacteria challenge test mode becomes applicable. ... 

The FCHV in Fig. 4-3 stores hydrogen in four 35 megapascal (MPa), equal to 5000 pounds per square inch (psi), high-pressure tanks. The system combines hydrogen from the tanks with oxygen from the air to generate 90 kW of electric power. The maximum speed of the Toyota FCHV is 155 kilometers per bour, and the range is 300 kilometers (km) measured by the Japanese 10-15 test mode, or somewhat less if tested on standard U.S. test cycles. 

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