Industrial engineering tool for failure analysis: Reliability-II — Lesson 2

This lesson covers the concept of failure analysis and prevention, focusing on the industrial engineering tools that are useful for this purpose. It delves into the reliability-related aspects of failures, explaining how the performance of a component decreases over time until it eventually fails. The lesson also discusses the failure rate as a function of time, highlighting three distinct zones: the debugging phase, the chance failure phase, and the wear-out phase. It further explains the significance of these phases and how they relate to the life history curve or bathtub curve of a product. The lesson concludes with an explanation of different failure distributions, including exponential, normal, and Weibull distributions, and how they can be used to calculate the probability of failure or the reliability of a product.

Video Highlights

00:18 - Introduction to the subject of failure analysis and prevention, and the importance of industrial engineering tools in this context.
03:27 - Explanation of the three stages of failure rate: decreasing failure rate, constant failure rate, and increasing failure rate.
07:25 - Introduction to the concept of the bathtub curve, which represents the life history of a product or system.
11:11 - Explanation of how to calculate reliability for different types of failure distributions.

Key Takeaways

- The performance of a component decreases over time until it eventually fails.
- The failure rate as a function of time has three distinct zones: the debugging phase, the chance failure phase, and the wear-out phase.
- The life history curve or bathtub curve represents the three phases of a product's life.
- Different failure distributions, including exponential, normal, and Weibull distributions, can be used to calculate the probability of failure or the reliability of a product.
- Even with few data points, the Weibull distribution can be used to calculate the probability of failure or the reliability of a product.