Intermittent Audio Failure Analysis of a Remote Speaker-Microphone for a Two-Way Radio
| Autor: | K. H. Leong, M. R. A. Rahman, C. C. Ooi, Feizal Yusof, R. H. A. Latiff |
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| Rok vydání: | 2015 |
| Předmět: |
010302 applied physics
Engineering business.industry Microphone Mechanical Engineering Acoustics Electrical engineering Two-way radio 02 engineering and technology Copper conductor engineering.material 01 natural sciences Finite element method 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials Residual stress 0103 physical sciences Solid mechanics General Materials Science Safety Risk Reliability and Quality business Root cause analysis Electrical conductor |
| Zdroj: | Journal of Failure Analysis and Prevention. 16:75-85 |
| ISSN: | 1864-1245 1547-7029 |
| DOI: | 10.1007/s11668-015-0053-2 |
| Popis: | This paper presents a case study of an intermittent audio failure analysis of a remote speaker-microphone module for a two-way radio. A root cause analysis was undertaken to identify probable causes of the intermittent failure, followed by a series of experiments to determine the strength and the intermittent audio failure load of cable components and the fully assembled cable. The combined experimental and finite element results demonstrated that the main contributor of the intermittent audio failure was the micro surface cracks on the copper conductor strands. In addition, the combination of the component materials and design of the cable have also contributed to the non-uniform state of residual stress induced in the copper conductors which have reduced the ability of the copper conductors to withstand the normal handling load under the influence of micro surface cracks. |
| Databáze: | OpenAIRE |
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