Sometimes the term "maintenance engineer" is used to add glorification to the job titles of janitors, handymen, and appliance or machine repairmen.
However, since you contrast maintenance and reliabilty I think you might be referring to (mostly) degreed engineers who perform reliability and maintenance analyses on components and electronic assemblies.
A reliability engineer uses industry and/or military standards, including empirical formulas, to analyze electronic and electromechanical designs, to predict how reliable they will be. The results of his/her analysis is generally a Mean Time Before Failure (in hours, or thousands of hours). The higher the MTBF, the more reliable the design. The reliability engineer may also suggest to the designer(s) ways to increase reliability by pointing out certain components that are high contributers to un-reliability.
The maintenance engineer uses the same industrial and military standards, and analyzes designs to see that they may be maintained (calibrated, repaired, replaced, etc.) in the 'field' where they are operated. He calculates how much time it will take to repair (Mean Time to Repair), and how much time the unit will be available (Operational Availability). These numbers (times) are based on the same principles the reliability engineer uses. The maintenance engineer may also suggest to the designer, ways to make the design more maintainable (such as placing certain components in a position where they may be replaced more easily by a technician, or reducing the number of screws holding a pc-board in place, etc.)
A reliability engineer may also function as a maintenance engineer, and vice-versa. Sometimes one engineer does both jobs.
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2007-06-04 06:29:18
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answer #1
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answered by tlbs101 7
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