ASNT Level III- Visual & Optical Testing
My Level III Self Study Notes Reading 4 Section 4B
My Level III Self Study Notes Reading 4 Section 4B
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FIGURE 71. Effect of etching: (a) unetched component with shiny appearance at rolled area<br />
and (t)) pits are visible in the dulled area after etching with ammonium persulfate<br />
Charlie Chong/ Fion Zhang