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ASQ CRE Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Life Data Analysis and Testing | - Accelerated life testing - Weibull analysis and life data modeling |
| Topic 2: Failure Analysis and Corrective Action | - Root cause analysis and corrective actions - Failure mode and effects analysis (FMEA) |
| Topic 3: Maintainability and Availability | - Maintainability engineering concepts - Availability modeling and analysis |
| Topic 4: Reliability Management | - Reliability program planning and management - Risk management and decision analysis |
| Topic 5: Reliability Engineering Principles | - System reliability evaluation - Reliability modeling and prediction |
| Topic 6: Probability and Statistics | - Probability distributions and statistical inference - Regression and data analysis methods |
| Topic 7: Design and Development | - Design for reliability - Tolerance analysis and robustness design |
ASQ Certified Reliability Engineer (CRE) Sample Questions:
A reliability test was terminated after 171 hours based upon a pre-established plan. An estimate of mean-time-to-failure of 57 hours was obtained. The lower 95 percent confidence bound on the true population mean-time-to-failure is:
Response:
- A. 22 hours.
- B. 125 hours.
- C. 27 hours.
- D. 11 hours.
Which of the following is (are) NOT (a) failure mechanism (s)?
l. Cracked
ll. Over-stressing.
lll. Inadequate maintenance instructions.
lV. Oxidized.
Response:
- A. l and lV
- B. lll
- C. ll and lll
- D. l
Which of the following statements is TRUE nonrepairable items?
Response:
- A. Reliability is survival probability over the expected life of the items when only one failure can occur
- B. Their primary unit of measure is mean time to replace.
- C. Reliability is the survival probability that failure of the items will not occur during the period of interest when more than one failure can occur
- D. Their primary unit of measure is failure severity.
In a life test of 4 batteries, failures were observed after 10, 30, and 40 hours. The 4th battery was tested
75 hours without failure, at which time the test was terminated.
What are the estimated Mean-Time-To-Failure (theta) and failure rate (lambda)?
Response:
- A. Estimated MTTF = 14; Failure rate = .017
- B. Estimated MTTF = .019; Failure rate = 52
- C. Estimated MTTF = 52; Failure rate = .019
- D. Estimated MTTF = 27; Failure rate = .038
Which of the following is a primary concern for a reliability engineer who uses publicly available sources for mechanical part-failure rates?
Response:
- A. Assuring that the data are in compliance with ISO standards.
- B. Recognizing that the quantity of such data is unlimited.
- C. Meeting parts-count requirements
- D. Finding appropriate data for each application.
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