13_Data+Collection+and+Empirical+Reliability+Models_Problems.doc

13_Data+Collection+and+Empirical+Reliability+Models_Problems.doc

This preview shows page 1 - 2 out of 5 pages.

Chapter 13: Exercise Questions 1. Given the following 10 failure times in hours. Estimate ), ( ), ( ), ( t f t F t R and ) ( t , and compute a 90% confidence interval for the MTTF: 24.5, 18.9, 54.7, 48.2, 20.1, 29.3, 15.4, 33.9, 72.0, 86.1. 2. Seventy compressors are observed at 5-month intervals with the following number of failures: 3, 7, 8, 9, 13, 18, and 12. Estimate ), ( ), ( t f t R and ) ( t , and determine the sample mean time to failure and sample standard deviation. 3. The following failure and censor times (in operating hours) were recorded on 10 turbine vanes: 150, 340+, 560, 800, 1130+, 1720, 2470+, 4210+, 5230, 6890. censoring was a result of failure modes other than fatigue or wearout. Determine the empirical reliability curve. 4. Using the multiply censored data from problem 3 with ) 0 ( i t R representing the reliability immediately following th i failure, compute the empirical reliability function by Kaplan-Meier product limit estimator. 5. Construct a life table for the engines of a fleet of 200 single-engine aircraft having the following annual failures and removals (censors). Removals resulted from aircraft eliminated from the inventory for various reasons other than engine failure.
Image of page 1

Subscribe to view the full document.

Image of page 2
  • Three '17
  • Bouanar Jack

{[ snackBarMessage ]}

Get FREE access by uploading your study materials

Upload your study materials now and get free access to over 25 million documents.

Upload now for FREE access Or pay now for instant access
Christopher Reinemann
"Before using Course Hero my grade was at 78%. By the end of the semester my grade was at 90%. I could not have done it without all the class material I found."
— Christopher R., University of Rhode Island '15, Course Hero Intern

Ask a question for free

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern