|
所在平台: Udemy |
课程主页: https://www.udemy.com/course/ndt_penetrant_testing_level_two/
课程评论：没有评论
**课程名称：** Penetrant Testing- Non Destructive Testing- Level II (渗透检测 - 无损检测 - II级) **课程概述：** 本课程详细介绍了液体渗透检测（LPT/DPT）技术，这是一种基于毛细作用原理的无损检测方法，专门用于检测表面缺陷。渗透剂能够渗入与表面连通的裂纹中，从而帮助识别高达0.1英寸的表面缺陷。LPT是一种成本效益高、易于操作的表面检测技术，广泛应用于焊接、制造、铸造、锻造和管道等行业。 **课程亮点：** * **广泛的应用性：** LPT可用于检测多种材料。 * **简便易学：** 操作流程相对简单。 * **直观的缺陷显示：** 缺陷迹象直接显示在被测表面，便于观察。 * **低成本投入：** 相较于其他无损检测方法，设备投资较低。 * **高便携性：** 特别是气溶胶喷雾形式，方便现场使用。 * **高效大面积检测：** 能够快速、经济地检测大尺寸部件或大面积区域。 **课程局限性：** * **仅限表面缺陷：** 无法检测内部缺陷。 * **预清洗的重要性：** 表面污染可能影响检测结果，因此预清洗至关重要。 * **材料限制：** 主要适用于相对致密、光滑的材料。 * **操作条件要求：** 需要在受控条件下进行多项操作。 * **化学品安全：** 需要注意化学品的毒性、易燃性和废物处理。 * **加工影响：** 机加工、打磨等操作可能造成的“金属涂抹”会影响缺陷的检测，可能需要进行酸洗预处理。检测后也需要进行后清洗以去除残留化学品。 **II级渗透检测（LPT）课程大纲：** * 引言 * 渗透检测原理 * 相关设备介绍与练习 * 液体渗透检测流程工作坊与小组讨论 * 检测材料 * 指示评估 * 液体渗透检测的应用 * 危险性与预防措施 * 规范要求回顾与练习 **课程目标：** 成功完成本课程培训后，学员将具备参加II级考试的能力，并通过考试后可获得II级渗透检测（LPT）无损检测认证。
Liquid Penetrant Testing or Dye Penetrant Testing (LPT/DPT) is based on the principle of capillary action and is used to detect surface defects. Penetrant of low surface tension penetrates into cracks that are open to the surface. The liquid penetrant testing method gives the best sensitivity for surface defects and defects up to 0.1 inches can be identified. LPT is a low-cost surface inspection Nondestructive testing method and mostly used in most of the industries where the welding process is required such as Fabrication, Manufacturing, Casting, Forging, and Piping, etc.Advantages of Liquid Penetrant Testing-· LPT is used to inspect a wide range of materials.· Liquid penetrant inspection is easy to perform.· The visual image of the flaw is generated on the surface of part/product as indications are produced directly on the surface.· Investment is low as compared to other NDT methods.· It is a very portable inspection method as it comes in aerosol spray cans also.· A large part or big area can be inspected with good speed and at a low cost.Disadvantages of Liquid Penetrant Testing-· Only surface defects get detected.· Pre-cleaning is important as contamination may mast the discontinuities or defects.· It is performed on relatively nonporous smooth material.· Several operations are required under controlled conditions.· Chemical handling with precaution is necessary (Toxic, Fire & Waste)· Metal smearing is from machining, grinding and other operations may inhabit detection. Material may need to be etched prior to inspection. To remove chemicals, post-cleaning is important.NDT Level II Liquid Penetrant Testing (LPT) Syllabus· Introduction· Principle of Penetrant Testing· Equipment Involved Review and Exercises· Liquid Penetrant Testing Procedures Workshop and Group discussion· Materials· Evaluation of Indication· Application of Liquid Penetrant Testing· HAZARDS Precautions· Code Requirements Review and ExercisesAfter successful completion of training, participants will be appearing for the Level II exam.Participants will be certified as NDT LPT Level II after successfully clearing the exam.
