1.1 ,This dye-penetrant test method covers a means of evaluating solid fiberglass all-roving reinforced pultruded rod or bar stock for longitudinal wicking. There are generally three mechanisms that promote wicking such as delaminations, longitudinal continuous voids, or the presence of hollow fibers. Any or all of them will be operating at a given time.
Note 1: ,Occasionally the flaws listed above may be detected by this test, but other tests are usually required.