Case Study – Hypodermic Needle Flaw Test A leading hypodermic needle manufacturer wanted to test 100% of their hypodermic needle tubing for flaws. The needle tubing is formed and welded stainless steel that is drawn through forming dies and then annealed. The manufacturer wanted to detect through-wall cracks down to 0.100 inches (2.5 mm) long x 0.004 inches (0.1 mm) wide in needles down to 0.011 inches (0.28 mm) in diameter. 100% visu

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