A typical UT inspection system consists of several functional units, such as the pulser/receiver, transducer, and display devices. A pulser/receiver is an electronic device that can produce high voltage electrical pulses. Driven by the pulser, the transducer generates high frequency ultrasonic energy. The sound energy is introduced and propgates through the materials in the form of waves. When there is a discontinuity (such as a crack) in the wave path, part of the energy will be reflected. back from the flaw surface. The reflected wave signal is transformed into an electrical signal by the transducer and is displayed on a screen. In the applet below, the reflected signal strength is displayed versus the time from signal generation to when a echo was received. Signal travel time can be directly related to the distance that the signal traveled. From the signal, information about the reflector location, size, orientation and other features can sometimes be gained.
I ordered a walnut butt and forearm for my cva scout in November with ingraving.when I got it 3 weeks later it was milled to thin and there was two dimples on top of butt where wood meets metal.i shot it on a Wednesday and Friday the dimples where 2 and 2and a half inch cracks.i sent it back.today (Christmas eve) I got my new butt and they didn't ingrave it.Im gonna call them Monday and send it back to be ingraved and also have forearm ingraved also for some reason the never engraved it I took it for granted that if they engraved the butt the forearm was included I guess it's not.Not happy so far
crack mdt 6.5
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I ordered a Springfield 1903 stock to restore my 85 year old father's rifle to give to my son for Christmas. I emailed them attached photos of some imperfections and cracks between the laminate. I'm disappointed that there was not better visual quality control before it was shipped. They do not respond back after phone messages and emails. My regret is that I didn't go with Champion synthetic stock. I would not buy again. 2ff7e9595c
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