考核结构件在宽带随机激励下的强度，需要考察结构的峰值应力响应。
The peak value of stress response is important when the strength of the structure in broadband random vibrations is considered.
本工作将探测到的感生电压积分，直接获得磁感强度峰值与待测应力的函数关系。
In this work, the peak value of magnetization dependence of stress can be obtained directly by integrating the inductive voltage of magnetic probe.
并讨论强度参数、峰值应力差与粒度分维值的关系。
Relationships among strength parameters, peak stress difference and fractal dimensions of granularity were also discussed.
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