国产国语对白一区二区三区,五月婷婷五月天,国产精品亚洲色婷婷99久久精品,神马不卡一区二区三级,亚洲V日韩V无码一区二区 ,爱豆传媒AV片,亚洲日韩欧洲无码AV夜夜摸,狠狠色噜噜狠狠色综合久
          打印 上一主題 下一主題

          [討論] 相控陣靈敏度試塊的加工

          [復制鏈接]
          跳轉到指定樓層
          樓主
          查看8622 | 回復3 | 2013-3-6 13:59:15 | 只看該作者 回帖獎勵 |正序瀏覽 |閱讀模式
          有誰做過相控陣靈敏度試塊?加工方法如何?缺陷尺寸如何定
          今天搖一搖出來47個金幣
          板凳
          nde7225030 | 2013-4-2 10:38:47 | 只看該作者
          有前瞻性,比較前衛。國內可能暫時還沒有8
          沙發
          李雁南 | 2013-4-2 09:19:00 | 只看該作者
          不知道您使用相控陣設備是用于何種行業的檢測,檢測何種工件。小弟這邊有的是ASTM E2700-09 Contact Ultrasonic Testing of Welds Using Phased Array中靈敏度試塊的加工方法。
          標準原文如下:
          10.3 Reference Reflectors:
          10.3.1 Straight-Beam Standardization—Correction for straight beam examination may be determined by means of a side drilled hole reflector at 1?4 and 3?4 of the thickness. For thickness less than 50 mm (2 in.), the 1?4-thickness reflector may not be resolved. If this is the case, drill another hole at 1?2 thickness and use the 1?2 and 3?4-thickness reflectors for correction.

          10.3.2 Angle-Beam Standardization—Correction for anglebeam examination may be determined by means of side-drilled hole reflectors at 1?4 and 3?4 of the thickness. The 1?2-thickness depth to a side-drilled hole may be added to the standardization or used alone at thicknesses less than 25 mm (1 in.). For certain combinations of thin wall and small diameter pipe side drilled holes may not be practical and surface notches may be used with agreement between contracting parties.

          10.3.3 The size of the side-drilled hole used for setting sensitivity shall be agreed upon by the contracting parties.Other targets may be substituted for side-drilled holes if agreed upon by the contracting parties。
          您需要登錄后才可以回帖 登錄 | 注冊

          本版積分規則