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一、问题的提出人们对产品可靠性的理解,以往大都停留在定性概念的认识上,没有一个固定的尺度和标准,因此无法描述、比较和评价产品的可靠性水平。由于上述原因,机械产品的设计只注重性能、加工精度等项指标,而对产品的可靠性则是凭经验和传统设计方法进行。设计人员在开展产品调查和用户访问中一般是在用户厂召开座淡会,向操作及维修人员了解设备存在
First, the issue raised People’s understanding of product reliability, most of the previous stay in the understanding of qualitative concepts, there is no a fixed scale and standards, it can not describe, compare and evaluate the reliability of the product. Due to the above reasons, the design of mechanical products only focuses on performance, processing accuracy and other indicators, while the reliability of products is based on experience and traditional design methods. Designers usually hold a faculty meeting at the user’s factory during product surveys and user visits. They learn from the operation and maintenance personnel that the device exists.