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首页> 外文会议>International Symposium on Nondestructive Testing of Wood; 20000913-20000915; Sopron; HU >Non destructive testing of structural composite beams
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Non destructive testing of structural composite beams

机译：结构组合梁的无损检测

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Non Destructive Testing methods have been applied to 95 structural composite I-beams coming from four SMEs. The beams have also statically tested to try to assess correlations with their strength and stiffness. NDT vibration method appears to be an efficient tool to characterise short term stiffness of composite beams. The same experimental mean values by vibration method and four-point static bending test has been found. It is also equal to a calculation according to ENV-1995 standard. The variability of the experimental results is the same in both cases. It shows that the production process can be improved. Bending tests up to failure have been performed on 59 I-beams. Estimated strength shows a large discrepancy and cannot be correlated to rigidity. Non-linearity of the behaviour of the beams and mixed failure modes are part of the explanation.
机译：无损检测方法已应用于来自四家中小型企业的95种结构复合工字梁。梁还经过静态测试，以尝试评估其强度和刚度的相关性。无损检测振动方法似乎是表征复合梁短期刚度的有效工具。通过振动法和四点静态弯曲试验发现了相同的实验平均值。它也等于根据ENV-1995标准的计算。在两种情况下，实验结果的可变性相同。这表明可以改进生产过程。已对59根工字梁进行了直至失败的弯曲测试。估计的强度显示出很大的差异，并且与刚性无关。梁的行为和混合破坏模式的非线性是解释的一部分。

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