Hi all, We have a bearing pad at work that failed a porosity test and could not hold pressure (this was the pad itself and not the babbit surface). I need to look into some NDT testing that will give us an idea about the porosity. I have googled and some sites say different things, from what I gather it will be penetrate testing, radiography or eddy current. Basically I need a test that will allow me to say to someone that this pad needs to be repaired so that "XXX test" reveals that surface defects are less than "xxx (some sort of classification that corresponds to the test method)" so that it will past its porosity test. This will be more specific than simply saying that the pad needs to be repaired so that the porosity test will be passed. I would be interested in hearing your opinions. Thanks for all your help.