使用非破坏性测试的脆性检测技术,实现社会
Yamato Abiru1, Hiroshi Nishiguchi1, Masato Maekawa2
1National Institute of Technology, Sasebo College, Nagasaki 857-1193, Japan.
Materials (Basel, Switzerland)
|September 14, 2024
概括
能使钢管的裂增长速度加快了10倍,损害了基础设施安全. 早期检测方法对于识别关键组件中这些引起的裂至关重要.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 腐蚀科学 腐蚀科学
背景情况:
- 确保基础设施的安全性和可靠性至关重要.
- 高压气组件,如钢管,容易发生裂传播.
- 脆性对材料的完整性构成重大风险.
研究的目的:
- 为了研究预充电对循环压缩负荷下钢管道裂传播的影响.
- 为了比较充电和未充电标本之间的裂纹生长率和断裂形态.
- 评估非破坏性测试方法的有效性,以检测由引起的裂.
主要方法:
- 钢管样本通过浸泡在氨基酸溶液中进行预充电.
- 应用循环压力负荷来诱导裂的传播.
- 为了检测裂,采用了非破坏性测试方法,包括流和敲击测试.
主要成果:
- 用预充电的标本的裂生长速度大约是未充电的标本的10倍.
- 在充电样本中,从管道的内部表面传播到管道的外部表面的裂.
- 断裂表面形态显著不同:预充电材料中的平面与未充电材料中的凸/凸.
- 厄迪电流和敲击测试有效地区分了受影响和不受影响材料中存在的大小和半大小裂的存在.
结论:
- 预充电显著加快了钢管中裂的传播.
- 在骨折形态和裂行为中观察到的差异强调了的有害影响.
- 有效早期检测引起的裂对于保持基础设施的安全性和完整性至关重要.
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