能否開設一個相控陣專欄 大家分享和交流一下新得？

能否開設一個相控陣專欄 大家分享和交流一下新得？

Conventional ultrasonic transducer for NDT commonly consist of either a single active element that both generates and receives high frequency sound waves, or two paired elements, one for transmitting and one for receiving. Phased array probes, on the other hand, typically consist of a transducer assembly with 16 to as many as 256 small individual elements that can each be pulsed separately.
無損檢測中使用的常規超聲探頭就晶片數量而言有兩種：一種是只包含一個晶片，這個晶片既用于生成又用于接收高頻聲波；而相控陣探頭一般是一個換能器組件，這個組件包含16到256個數量不等的小型單個晶片，每個晶片可被分別觸發

Unlike a conventional single element transducer, which effectively merge the effects of all beam components that strike its area, a phased array probe can spatially sort the returning wavefront according to the arrival time and amplitude at each element.
相控陣探頭與常規單晶探頭的不同點在于，它可以根據聲波返回到每個晶片的時間和波幅，在空間上對返回的波前進行分揀，而常規單晶探頭實質上只是發射到被檢測區域的所有聲束的結果融合在一起。

When processed by instrument software,each returned focal law represents the refection from a particular angular component of the beam,a particular point along a linear path, and/or a reflection from a particular focal depth(see Figure 1-5 and Figure 1-6).The echo information can then be displayed in any of several format.
儀器軟件對返回的聚焦法則進行處理時，將每個返回的聚焦法則看作聲束以某個具體角度、從線性聲程上的某個點、和/或從某個具體的聚焦深度反射的聲束（參見圖1-5和圖1-6）。然后，儀器會將回波信息以多種顯示形式的一種呈現在屏幕上。

相控陣相對常規超聲的優勢：
1.The benefit of phased array technology over conventional UT come from its ability to use multiple elements to steer,focus,and scan beams with a single probe assembly.Beam steering, commonly referred to S-scaning(sectorial scaning),can be used for mapping components at appropriate angle. This can greatly simply the inspection of components with complex geometry.
1.相控陣技術優于常規超聲技術之處在于它可以使用單個探頭組合件中的多個晶片使聲束進行偏轉、聚焦和掃查。利用通常被稱為“S掃查”（扇形掃查）的聲束偏轉，可以適當的角度生成被測工件的圖像。這樣極大地簡化了檢測幾何形狀較為復雜的工件的過程。
2.The ability to test welds with multiple angles from a single probe greatly increase the probability of detection of anomalies. Electronic focusing optimizes the beam shape and size at the expected defect location.
2.使用單個探頭以多個角度檢測焊縫的能力極大地提高了探測焊縫異常狀態的幾率。電子聚焦可在會出現缺陷的位置處優化聲束的形狀和大小，從而可進一步提高檢出率。

已經有相控陣專題，你翻譯的是奧林巴斯  R/D TECH公司出版的一份PAUT的教材么？

是這本教材。

有相控陣版塊，樓主在使用相控陣時有什么問題可以上來問，論壇里高手還是很多的

我打開論壇的首頁怎么看不到這個版塊？

選擇技術交流就可以看到了