Leak-Before Break 先漏后破
Leak Before Break 破前漏 ; 先漏后断
leak-before-break criterion 先漏后破准则
The leakage model of two-phase critical flow established already is applied to the
本课题主要开展两相临界流泄漏模型研究，并尝试将研究成果应用于压力容器与管道的先漏后爆（LBB）分析中介质通过穿透裂纹的两相临界泄漏率的计算。
参考来源 - 两相临界流泄漏模型及其应用研究It makes great meaning to assess their safeties. Nowadays the main assessment method, considering steady fluid leak before fracture, is based on leak-before-break.
考虑到压力容器和管道在断裂前会产生稳定泄漏的特点,目前国外最新标准采用了“先漏后断”的观点对其进行安全评定。
参考来源 - 焊接管道“先漏后断”评定裂纹张开面积研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Study on the leak rate of fluid in welded pipes in leak-before-break analysis;
介绍了输气管道泄漏率的大孔模型和管道模型的特点及求解方程。
Gas leakage was studied experimentally and theoretically to improve the precision of the analytical model of the leakage rate for the leak-before-break technique.
为了提高破前漏分析中泄漏率的计算模型的准确度，针对气体的泄漏率问题开展了实验研究和理论研究。
Leak before break (LBB) is an important concept for assessing pressure vessels and nuclear equipment.
破前漏(简称lbb)是压力容器、核电站设备结构设计与评价中的一个重要准则。
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