Penetrant Viscosity It is easy for some of us to speak about “old times” in the penetrant business. In the early days, which implies something like 30 or 40 or 50 years ago, one of the requirements of the QPL was to list the ...
A Few More Thoughts On The Evolution of Penetrant Specifications The past two issues of the PENETRANT PROFESSOR have concentrated on the historical path of the relevant qualifying documents and the journey to develop a method...
The thermally cracked aluminum panel was an early method of comparing the sensitivity of one penetrant to another, and was written into the first issue of MIL-I-25135. At that time there was apparently no concept for a specif...
Time Flying and Some Perspective on Qualification Documents It is an interesting question – Is penetrant inspection a new technology or an old one? For newcomers, it probably is old. But some old timers can still remember the...
In October 2015 Bill Mooz, President of Met-L-Chek, gave a talk at the Fall ASNT Conference in Salt Lake City, Utah. Bill has been closely involved with the development of the specifications govern- ing penetrant inspection m...
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