Design and development of a test panel for fluorescent dye penetrant

在染料渗透测试（DPT）中，在对零件进行检查之前，使用测试面板每天检查染料渗透系统的效率。通常使用的测试面板由不锈钢板组成，上面涂有一层韧性金属，如铬。通过在钢面施加适当的压痕，在涂层面产生可控的人工裂缝。市场上现有的测试板在裂缝的大小和形状方面不符合无损检测规范，并且在多次使用后难以洗掉染料。无损检测顾问公司正在研究开发一种创新的程序，以生产更复杂的测试设备。该装置将提高DPT检测零件缺陷的能力，从而提高材料的安全性。

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.