{"id":17227,"date":"2016-11-26T10:52:27","date_gmt":"2016-11-26T10:52:27","guid":{"rendered":"http:\/\/www.safetyangel.com\/recdev\/?p=17227"},"modified":"2016-11-26T11:10:32","modified_gmt":"2016-11-26T11:10:32","slug":"rec-welcomes-you-to-our-blog-2","status":"publish","type":"post","link":"http:\/\/www.safetyangel.com\/recdev\/rec-welcomes-you-to-our-blog-2\/","title":{"rendered":"REC welcomes you to our blog!~"},"content":{"rendered":"
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If you have questions we may answer or comments on the articles please share below.<\/p><\/div>\n

Reliability Expert Center (REC) is excited to introduce to you our new website and blog. <\/span>Here you will find biweekly submissions of featured articles concerning<\/span>\u00a0Reliability,\u00a0Sustainability,\u00a0Lubrication,<\/em>\u00a0&\u00a0<\/span>Inspection \u00a0<\/span><\/em><\/span><\/span>from local and global experts that offer\u00a0<\/span><\/span>industry\u00a0insight and best practice methods.<\/span><\/span><\/p>\n

This week’s\u00a0topic is discussing the top engineer necessity and<\/span> (inexpensive) software solution we offer\u00a0called BlockSim<\/span><\/em><\/span>.<\/span><\/p>\n

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What is reliability importance and how is it used in BlockSim?<\/span><\/h2>\n

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Reliability importance is a measure of how much impact each component has on the overall reliability of the system. This can be useful information for improving the system reliability, because you will want to concentrate your efforts first on improving the reliability of the\u00a0components that have the greatest effect on the system reliability.\"blocksim_mdi\"
\n<\/span><\/p>\n

One simple way to demonstrate reliability importance is to look at a series system. In general, the least reliable component in a series system has the greatest effect on the reliability.<\/span><\/p>\n

Consider three components arranged reliability-wise in series, where R1 = 70%, R2 = 80% and R3 = 85% (for a given time). In the table shown next, we can examine the effect of each component’s reliability on the overall system reliability.<\/span><\/p>\n

The first row in the table shows the given reliabilities for each component and the corresponding system reliability. In each of the subsequent rows, the reliability of one component has been increased by 10% while keeping the reliabilities of the other components at the given values. This allows us to observe the effect of each component’s reliability on the overall system reliability. It is clear that the highest system reliability occurred when the reliability of the least reliable component (Component 1) was increased by a value of 10%. In other words, Component 1 has a higher reliability importance.<\/span><\/p>\n

\n\n\n\n\n\n\n\n
Component 1<\/b><\/td>\nComponent 2<\/b><\/td>\nComponent 3<\/b><\/td>\nSystem<\/b><\/td>\n<\/tr>\n
0.7<\/td>\n0.8<\/td>\n0.85<\/td>\n0.476<\/td>\n<\/tr>\n
0.8<\/td>\n0.8<\/td>\n0.85<\/td>\n0.544<\/span><\/td>\n<\/tr>\n
0.7<\/td>\n0.9<\/td>\n0.85<\/td>\n0.536<\/td>\n<\/tr>\n
0.7<\/td>\n0.8<\/td>\n0.95<\/td>\n0.532<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

In simple systems such as this series system configuration, it is easy to identify the weak components. However, this becomes quite a difficult task in more complex systems. The value of the reliability importance depends both on the component’s reliability and its position in the system. Click\u00a0here<\/a>\u00a0for more information about how reliability importance is calculated in\u00a0BlockSim<\/a>.<\/span><\/p>\n

In BlockSim 8, this value is used in several places.<\/span><\/p>\n