Eddy Current Testing Research on Thin Spherical Shell of 5A06 Alloy
-
摘要: 针对壁厚约为1.5 mm的5A06锻轧薄壁球壳工件的加工工艺和内部可能的缺陷形貌，分析了该薄壁件质量的无损检测技术现状和检测难点。设计了含有不同尺寸的模拟裂纹和分层缺陷的对比试样，研制和改进了专用的高灵敏度探头。通过采用优化的涡流检测参数，实现了有效检出5A06薄壁壳体表面5 mm×0.05 mm(长度×深度)的裂纹类缺陷，具备了检出在1 mm渗透深度下的5 mm长线形刻槽和0.8 mm深度左右的 0.5 mm面型缺陷的高灵敏度检测能力，并提出了100%检测工件质量的方法。Abstract: According to machining technology and inner defect shape of 5A06 alloy forging spherical shell with thickness of 1.5mm, the nondestructive testing techniques and the testing difficulties of it were analyzed. After that, the reference specimens with simulated cracks of different sizes and delaminated defect were designed, at the same time, the special high sensitive probe was developed. By using optimized eddy testing parameters, it realized the effective testing to surface simulated crack defect with 5 mm×0.05 mm(Length×Depth) of the thin spherical shell, and it had high sensitive testing ability to 5 mm length line type defect and 0.5 mm planetype defect under about 1.0 mm penetrate depth. Then the testing method to products whole depth range was suggested.
-
Keywords:
- Thin spherical shell /
- Eddy current testing /
- Transducer /
- Sensitivity
-
-
[1] 荆峰.薄铝板的蓝姆波检测试验［J］.航天制造技术,2004(3):42-46. [2] 张雨平，陈志强，马振波.兰姆波在检测铝合金薄板中的应用［J］.轻金属,1998(5):57-60. [3] 徐可北.金属薄板兰姆波检测技术［J］.无损检测,1999(10):461-465. [4] 美国无损检测学会编.《美国无损检测手册》译审委员会译.美国无损检测手册电磁卷［M］.上海：世界图书出版社,1996. [5] Gargis G A, et al，阎军，译.利用电磁场相位角实现金属板的无损检测［J］.无损检测,1988(5):165-166. [6] 钱彦岭，罗飞路，彭涛.涡流检测缺陷模糊认识的新方法［J］.焊管,1997(2):9-12. [7] 罗飞路，彭涛，倪国旗.基于噪声中信号估计理论的涡流检测与物理实现［J］.湘潭大学自然科学学报,1997(2):90-93. [8] 孙晓云，路灿，袁斌，等.涡流无损检测中的定量分析［J］.无损检测,2000(5):195-199. [9] 孙金力，袁英民，陈新波.放置式涡流检测传感器的制作［J］.青岛大学学报,2002(3):70-74. [10] 高顶，柳昌庆，刘秀凤.金属锈蚀涡流检测的影响因素［J］.煤,1998,4(7):9-10,14. [11] 何东风，立木实，系崎秀夫.手指移动型高温超导SQUID在无损检测中的应用［J］.超导技术,2008,12(36):43-46.
计量
- 文章访问数: 1
- HTML全文浏览量: 0
- PDF下载量: 0
下载:
