从而克服了由于复合材料性能分散性大，用现行方法确定其许用值所需试件个数多、试验经费昂贵的缺点。
Thus, it has overcome the disadvantages of traditional methods caused by the large scatter of the composite materials, such as a great number of specimens and expensive test.
剩余强度来度量疲劳损伤破坏准则清楚明了，但实验工作量大、费用高，并且一个试件只能得到一个数据；
The residual strength is usually used to measure the fatigue failure, but so much work is needed to do and the cost is high and only one data is acquired for one test-piece.
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