A Q245R material nondestructive stress test method

一种q245r材料无损检测应力的方法

Abstract

The invention relates to a Q245R material nondestructive stress test method. By taking the measured coercivity value of the device under test into different formulas in different states, the stress value of the device under test can be obtained. The method can realize accurate and quantitative testing of stress states of Q245R materials. In the invention, according to the characteristics of the magnetization of the Q245R materials and the magnetic memory parameters, the test efficiency is high; tests can be carried out repeatedly to facilitate the re-inspection. The method of the invention can carry out the non-destructive field nondestructive testing on the equipment and pipelines produced with the Q245R materials; the detection process is simple and effective; and requirements for surface conditions of the equipment are not high, thereby saving the testing cost. The method of the invention makes clear the load states of the pipelines, equipment, etc. to prevent accidents related to stress synergy so as to reduce enterprise losses and bring obvious social benefits.
本发明涉及一种Q245R材料无损检测应力的方法,通过把测得的被测设备的矫顽力值带入到不同状态下的不同公式中,可以求得被测设备所承受的应力值。本发明可以实现对Q245R材料应力状态的准确、定量检测;本发明根据Q245R材料磁化的特性及磁记忆参数测试准确度高,可以反复进行试验,方便复验;本发明可对Q245R材料所生产设备及管道进行快速非破坏性的现场无损检测,检测工艺简单有效,对设备表面状况要求不高,节省检验成本。本发明明确管道和设备等所承受的载荷状况,预防与应力协同有关联事故的发生,减少企业损失,社会效益明显。

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