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Loudspeaker reliability and reliability testing, Marine Speakers the reliability and reliability tests of loudspeakers are discussed from the aspects of test purposes, Marine Speakers test stress and failure data, and it is important to perform reliability work during the design and manufacturing phases of the loudspeaker.
In people's daily activities, Marine Speakers often related to the reliability of the product. Marine Speakers But the birth of the discipline of reliability is not long, a statement is AGREE - US military electronic equipment reliability consulting group (Ad-visory group on Reliability of Electronic Equipment) report in July 1957 published in the United States as a symbol The Since then, the reliability of technology in the 4O years of application and development, experienced a budding, development and maturity of the process Ⅲ. Marine Speakers China has established a reliability test base since the middle of the 20th century, Marine Speakers and has promoted the reliability process of domestic components. Marine Speakers It has laid a good foundation for the wide entry of domestic components into the world market. China has become a major producer of loudspeakers, but has not yet become a speaker manufacturing power. With the dramatic increase in production, quality and reliability have yet to be improved. Marine Speakers In fact, the reliability of the speaker is an important feature of high-end products, for this point, some speaker manufacturers know is not enough, the concept is very vague. So we should only focus on the speaker performance design, Marine Speakers ignore the tendency of reliability design, fully understand the meaning and meaning of reliability.
Definition of reliability and scope of application The definition of loudspeaker reliability is defined as "the ability of the loudspeaker product to complete the specified function within the specified conditions and within the specified time." It is the time quality indicator of the loudspeaker product after it is used to describe the loudspeaker In the course of the use of vulnerable and reliable. Marine Speakers As the requirements of the user increase, Marine Speakers the speaker structure is becoming more and more complex (such as car speakers), the output power is getting bigger (such as PA speakers), the use of more and more harsh environment (such as outdoor speakers), will lead to reliable speaker products Sexual level down. At the same time, such as the use of new materials, Marine Speakers new technology or new technology, will make the speaker unreliable factors increased.
The reliability of the loudspeaker can also be defined as "the number of failures allowed by the speaker product under specified conditions and within a specified time." Marine Speakers The mathematical expression is the mean time between failures (MTBF). Marine Speakers It can be considered that the random failure is unavoidable and acceptable, which also leads to failure due to design reasons or manufacturing process, as long as within the allowable number, often no longer for further traceability. To this end, as early as 1995 the international community began to define the traditional reliability and random failure can not avoid the old concept of the question, Marine Speakers while the reliability of the project began to implement the physical method of failure. In Europe, the use of maintenance-free use (MFOP) instead of the original MTBF, the failure rate of the curve of the curve was broken [21. Therefore, in combination with the failure of physical methods and failure analysis method, Marine Speakers it is not a delusion to design a loudspeaker product that does not have random failure. A considerable number of foreign enterprises have already done fruitful work in this area.
Due to the wide range of loudspeakers, Marine Speakers the reliability of the loudspeaker test method is similar, but there are some differences in the test stress and failure criteria, so the author mainly from the experimental purpose, test stress and failure criteria for discussion.
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