The Research Of Fragility

According to the theory of impacting Damaged Border, the fragility of the products can be measured by the experimental means such as impact testing machine method and cushion material method. Depending on our researches and tests of many years, this paper puts format one comparatively reasonable fragility concept and an appraisal method. And through the comparison of two testing methods, it offers the theoretical foundation for practice of evaluating the fragility and designing of the products.