In the nondestructive testing materials, the change of elastic modulus and internal friction is also an important index for judge whether has a defect.
在材料的无损检测中，弹性模量及其内耗的变化也是判断材料中是否有缺陷的一个重要指标。
In the nondestructive testing materials, the change of elastic modulus and internal friction is also an important index for judge whether has a defect.
在材料的无损检测中，弹性模量及其内耗的变化也是判断材料中是否有缺陷的一个重要指标。
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