Reliability importance

The high standard of manufacturing (spray drying, pressure sintering, etc.) and high product reliability (important for automized manufacture). 

Do Van, R, A. Barros, and C. Berenguer (2008c). Reliability importance analysis of markovian systems at steady state using perturbation analysis. Reliability Engineering and System Safety 93 l ), 1605-1615. 

Armstrong, M. J. (1995). Joint reliability-importance of components. IEEE m is on eliabili 44(3) 408-412. 

Reliability importance measures Reliability importance measures can be used in risk analysis to provide information concerning how the system will behave with regards to changes in input parameters. A variety of different measures have been developed. Two classic measures are briefly commented in the following. 

Results from reliability importance measures can provide input concerning which parameters to investigate closer in sensitivity analyses. 

Reliability importance measures The risk analysis model is first analysed using importance measures to analyze the impact of changes in the input parameters. 

Table 2. Calculated reliability importance measures for the input parameters.

Daemi, T., Ebrahimi, A. Fotuhi-Firuzabad, M. (2012). Constructing the Bayesian Network for components reliability importance ranking in composite power systems. International Journal of Electrical Power Energy Systems, 43(1) 474-480. 

Chang, Y.-R., et al., 2004. Computing System Failure Frequencies and Reliability Importance Measures Using OBDD. IEEE Transactions on Computers. 53(1) 54-68. 

Armstrong, M. 1997. Reliability-importance and dual failure-mode components. IEEE Trans, on Reliability 46(2) 212-221. 

The volumetries of a field, along with the anticipated recovery factors, control the reserves in the field those hydrocarbons which will be produced in the future. The value of an oil or gas company lies predominantly in its hydrocarbon reserves which are used by shareholders and investors as one indication of the strength of the company, both at present and in the future. A reliable estimate of the reserves of a company is therefore important to the current value as well as the longer term prospects of an oil or gas company. 

The use of automatic interpretation techniques serves first of all the increase in the speed of the data interpretation however, very important goals are also the increase in the reliability and reproducibility of the inspection. Also, in some situations, computer systems can help to interpret complex data because they are capable of analysing more data simultaneously than it can be done by an operator. 

In the intervening years mueh excellent analytical work has been done by Libby, Lord, Dodd, Deeds, Palanisamy and many others which has given us a practical method of understanding eddy current behavior in many applications including nuclear inspection and aerospace where problems of safety and reliability have become so important to us all. 

Since the geometry of the wheel is also displayed during this type of test, it is important to distinguish between defects and geometrical influences. The tester can easily and reliably make these distinctions, if the distortions of the wheel s geometry and the display of the defects caused by the display of the test system are not to great. 

We are confident that any user of this combined evaluation technique, as well as the development of future test standards for manual ultrasonic testing will benefit from this result, because it allows a greater flexibility in the applicable method without loosing reliability. Often an expensive production of a reference block can be avoided and therefore testing costs are reduced. Since all calculations are performed by a PC, the operator can fully concentrate on his most important duty scanning the workpiece and observing the A-scan. Additional time will be saved for the test documentation, since all testing results are stored in the instrument s memory (the PC s hard drive) with full link to the Software World (Microsoft Word, Excel, etc.). 

Therefore, it is important for judging the performance and the safety of the product to understand the size of the defect and the position by the ultrasonic method quantitatively. And, the reliability of the product improves further by feeding back this ultrasonic wave information to the manufacturing process. 

Wlien analysmg the data, it is important to consider a wide time range to ensure the reliability of the data, since at short times, <1 ms, it will be detemiined by tlie charging time of the double layer, and at longer times, >10 s, by the effects of natural convection. 

B2.4.2). The slope of the line gives AH, and the intercept at 1/J= 0 is related to A imimolecular reaction, such as many cases of exchange, might be expected to have a very small entropy change on gomg to the transition state. However, several systems have shown significant entropy contributions—entropy can make up more than 10% of the barrier. It is therefore important to measure the rates over as wide a range of temperatures as possible to obtain reliable thennodynamic data on the transition state. 

Another important breaktlirough occurred with the 1974 development by Laubereau et al [24] of tunable ultrafast IR pulse generation. IR excitation is more selective and reliable than SRS, and IR can be used in pump-probe experiments or combined with anti-Stokes Raman probing (IR-Raman method) [16] Ultrashort IR pulses have been used to study simple liquids and solids, complex liquids, glasses, polymers and even biological systems. 

For long term simulations, it turns out that the reproduction of the conservation properties is most important in order to ensure reliable results. 

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