Design and development of a test panel for fluorescent dye penetrant

在染料渗透检测（DPT）中，在进行零件检测之前，使用测试板每天检查染料渗透系统的效率。通常使用的试验板由涂有延展性金属（如Chrome）的不锈钢板组成。通过在钢侧施加适当的压痕，在涂层侧上产生受控的人工裂纹。市场上现有的测试板在裂纹的尺寸和形状方面受到不符合NDT规范的限制，并且在多次使用后难以洗掉染料。NDT Consultants正在研究开发一种创新的程序，以生产更复杂的测试设备。这种装置将提高DPT检测零件缺陷的能力，从而提高材料安全性。

In Dye Penetrant Testing (DPT) a test panel is used to daily check the efficiency of the dye penetrant system before proceeding to inspection of parts. The test panel usually used consists of a stainless steel plate coated with a ductile metal such as chrome. Controlled artificial cracks are created on the coated side by applying appropriate indentations on the steel side. Existing test panels in the marketplace suffer limitations of not being compliant with the NDT specifications in terms of size and shape of the cracks, and the difficulty to wash out the dye after several usages. NDT Consultants is looking into developing an innovative procedure to produce a more sophisticated test device. Such a device will improve the capability of DPT in detecting flaws in parts, leading to an increased materials safety.