渦流檢測標準理解

1.         BS EN1971-1999copper and copper alloy-eddy current test for tube: 怎么理解“ theacceptance criteria, detection of local discontinuities by encircling coilssystem and detection of non-local discontinuities by encircling coil systemswith lower detection levels?”

2.        In the criteria BS EN1971-1999copper and copper alloy-eddy current test for tube:

K2=(signal for the lower detection thresholds)/(signal for the normal detection threshold)怎么理解這個公式的？

3.         

In the criteria BS EN1971-1999 copper and copper alloy-eddy current test for tube: d0=N0/L0 ,怎么理解這個公式的？

yanyingjuanli 發表于 2014-12-16 20:51
EN473的證書？

現在更改為EN ISO9712證書了

丁偉臣 發表于 2014-12-13 16:52
可與我聯系，我們提供歐標渦流2級培訓發證服務。

EN473的證書？

可與我聯系，我們提供歐標渦流2級培訓發證服務。