Reliability curve

Operator action tree used to develop the errors, and the. specific time reliability curves u.sed and how they were developed,... 

Fig. 8-la. The effect of a nonlinear background on the analysis for silver. Simple subtraction of adjacent background gave inversion observable on curve 1 near ordinate axis. Allowance for variation of background with wavelength gave the more reliable curve 2. (We are indebted to the Eastman Kodak Co. for the films and the results plotted as abscissas.)... 

The upper envelope of E as a function of R maximized over p and p can now be found. We first maximize E over p for each value of p numerical techniques or Eqs. (4-104) and (4-106) can be used. Then we maximize this result over p either by using graphical techniques to find the upper envelope or by using Eqs. (4-97) and (4-98). This optimum E,R curve is generally called the reliability curve for the given channel. 

Thomas Midgley began his inventing career on a high school baseball team in Columbus, Ohio, where he lived most of his life. Rubbing a ball with slippery elm-tree juice instead of spit, he and a friend pitched such reliable curves that professional pitchers adopted their trick. 

Prudent engineering practice is to design firing systems to operate at power levels above those where the high-reliability curve flattens into or approaches a... 

The complete data compilation for Cf is shown in Tables II and III. Note, as a final point, that from the analysis a heat capacity for the condensed phase is derived, from 298 K to the highest temperatures of measurements. These data are shown in Table II and plotted in Fig, 9. We believe this to be a highly-reliable curve, and, for these exotic materials, not likely to be measured directly for some time. 

The death of living things follows the same reliability curve of other products. 

For the sake of brevity, only one plot is provided as an example Fig. 3 presents the superimposition of the nonparametric reliability curve with 95% confidence interval for the TTC subsystem with the Weibull fit determined with the MLE method. 

Figure 3 shows that the Weibull fit matches well the nonparametric reUabUity curve, suggesting that a Weibull distribution represents reasonably well the TTC data. The goodness-of-fit of the Weibull distribution is simply measured in this work by the maximum and average errors over 15 years between the nonparametric reliability curve and the Weibull fit. Table 2 provides these results and indicates that the Weibull... 

Figure 1. Improvement of the reliability curve by using highly aceele-rated life tests.

Hence, statistical evaluation of failures that occur during a product s life cycle help develop a failure curve that, because of its shape, is referred to as a bathtub curve. When considering the usefulness of a product, the curve becomes a reliability curve for that product. 

FIGURE 21.13 Reliability curves of an unmaintained (left) redundant system and a maintained (right) system. 

As Figure 3.294 shows, each fatigue mechanism is characterised by a different shape of the non-reliability curve, namely ... 

Reliability in safety assessment. (A) Significance of relibility, (B) reliability curves. 

Bathtub Curve A graphical representation of the life cycle of products, systems, or individual components in terms of frequency of failures relative to periods of usefulness. In system safety, it is also known as a reliability curve. 

FIGURE 512 Classic bathtub reliability curve showing the three stages during the life of a product from a reliability perspective infant mortality, steady-state, and wear-out. 

Krakow s afternoon peak takes much longer than the morning peak, hence the reliability curves run closer to each other (Fig. 8), and the dispersal of results is similar in both cases of Krc. At the assumed reliability level of 0.9, the difference in the boundary value of time is much smaller than in the morning peak and stands at 0.75 (45 mins). Thus, the probability of encountering worse traffic conditions than those at = 7 [pcu/cycle] is much higher. Figure 8 shows that in the afternoon e.g. 

Reliability curves relating to values of time periods of correct operation of the lane help determine the probability of the occurrence of lane service which is reliable (acceptable) to drivers ... 

We use the wear time-dependent reliability curve after updating both E and y as the baseline, shown as the curve with circular makers in Figure 8, and we can see from Figure 8 ... 

Compared with pp E has greater influence on the reliability result. Because after updating E only, the wear time-dependent reliability curve is more close to the baseline ... 

After validation of the PLP assumption, the parameters of the PLP model were estimated analytically using the Equation 2 and 3. The calculations showed that p is 1.58 and 0 is 443.8. According to achieved reliability model, the reliability curve was plotted as shown in Figure 2. The plot shows that the reliability of cutting arms of drum shearer reaches the zero after about 1300 hours of operation. There are 80% and 50% chance that this system can work without any failure after 170 hour and 350 hour respectively. 

Figure 1. Reliability curve of explosive blot at normal temperature.

The reliability curves in Fig. 10(g) to (i) show the effect of filler size on the joint reliability. These adhesives are all filled wifh nickel/gold coated plastic particles. It seemed that hllers larger than 5 pm had negative effect on the joint performance. With these pastes, joints could fail rather early in the test, though their MTF values were quite high. 

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