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Loudspeaker reliability and reliability test, the reliability of the Marine speakers from the test and reliability test, the purpose of the test stress and the failure data of Marine speaker, the speaker of the reliability of the design and manufacture of stage work is very important.
In People's Daily activities, Marine speakers are often associated with product reliability. Marine speakers but the birth of reliability discipline is not long, a statement agree - the United States military electronic equipment reliability consulting group on the reliability of electronic equipment) report (Ad - visory group published in July 1957 in the United States is a symbol of since then, the reliability of the technology of 4 o the application and development for many years, experienced a process of germination, development and maturity Ⅲ. Since the mid-20th century, Marine loudspeaker China has established a reliable test base and promoted the reliability of domestic parts. The Marine loudspeaker 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 it has not yet become a major producer of loudspeakers. With the rapid increase of production, quality and reliability still need to be improved. In fact, the reliability of the ship's loudspeaker is an important feature of high-end products, and at this point, some speaker manufacturers know that it is not enough, and the concept is very vague. Therefore, we should focus only on the performance design of the speaker, but ignore the trend of reliability design and fully understand the meaning and meaning of reliability.
In the definition of reliability and application scope, the definition of speaker reliability is defined as "the ability of the speaker product to complete the specified function in the specified conditions and time." "It is a time quality indicator for the speaker product, used to describe the situation of speakers in a fragile and reliable process." Marine speakers with the user's demand, the Marine speaker speaker structure is becoming more and more complicated, such as car speakers), the output power is more and more big, such as PA speaker), use more and more harsh environment, such as outdoor speakers, speakers will lead to a reliable product levels drop. At the same time, the use of new materials, new ocean speakers, or new technologies will increase the number of unreliable speakers.
The reliability of the speaker can also be defined as "the number of failures permitted by the speaker product under specified conditions and specified time". "The mathematical expression of the ocean speaker is the average time between failures (MTBF)." Maritime, can think of, a spokesman for random failure is inevitable and acceptable, this also caused due to design or manufacturing process and cause of failure, as long as in the allowed range of Numbers, usually will no longer be further traceability. Therefore, as early as in 1995, the international community began to define the traditional reliability and random failure, can't avoid problems old concept, introduced in the reliability of the project to the failure of the physical method. In Europe, the failure rate of the curve was broken using MFOP instead of the original MTBF. Therefore, it is not an illusion to design a loudspeaker product with no random fault, combining the failure and failure analysis methods of physical methods. Quite a number of foreign companies have done very productive work in this area.
Due to a wide range of speakers, the Marine speaker of the reliability of the test methods are similar, but there is some difference in the aspect of test stress and failure criteria, therefore, the author mainly from the purpose of the experiment, test stress and failure criteria are discussed.
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