Abstract
In spite of applying reliability techniques during the design and development of equipment, failure data could still arise in the life cycle of electronic equipment. The failures are categorized as electrical performance, component and mechanical failures. Organizing a failure data management system (FDMS) to handle the failure data is presented. Practical considerations for the root cause analysis of component failures and classifying the origin of the causes as design error, manufacturing process induced failure and defective component are explained.
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References
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Appendices
Assessment Exercises
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1.
Say True or False:
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(i)
Discussing corrective actions in the brainstorming session for identifying the failure causes of component failures is useful to complete the failure analysis faster.
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(ii)
Defects in components are the prime reason for the failure of components in electronic equipment.
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(iii)
Soldering and post-cleaning operations on PCBs could induce thermal shocks on electronic components.
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(iv)
The requirements of a component (Ex. 2N3019) are mentioned in the general specification of military standard applicable for the component.
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(v)
Military slash sheet for a non-mil failed component should be procured for preparing test schedule for confirming defects in the failed component.
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(i)
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2.
Describe the general approach for identifying the root causes of electronic component failures.
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3.
What are the sources of component failures?
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4.
Explain FDMS showing the inputs and the outputs of the system.
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5.
Explain the administrative requirements of a failure data management system.
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6.
Explain how the findings on the failure analysis of components could be used for new designs.
Research Assignments
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1.
Component and electrical performance failures might be observed when conducting reliability improvement tests on the bought-out products listed below. Identify the root causes of the failures and suggest at least three corrective actions to eliminate the causes of the failures:
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(i)
SMPS
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(ii)
RF Power Amplifier
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(iii)
LED Lighting unit
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(iv)
Audio power amplifier
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(v)
Battery charger
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(i)
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Natarajan, D. (2015). Failure Data Management. In: Reliable Design of Electronic Equipment. Springer, Cham. https://doi.org/10.1007/978-3-319-09111-2_7
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DOI: https://doi.org/10.1007/978-3-319-09111-2_7
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