研究裂纹宽度与磁记忆信号关系。
The relation of the Magnetism Memory signal and crack width is studied;
磁记忆信号非常微弱，磁敏传感器的选择十分重要。
Because magnetic memory signal is faint, selection of magnetic sensor is very important.
通过试验，研究了构件的放置方向对磁记忆信号的影响。
This paper studies the effects of the placement direction to the magnetic memory signals through experiments.
采用磁记忆检测发现液化石油气储罐焊疤部位存在较强的磁记忆信号。
A typical signal was found in the position of welding scar of a liquefied petroleum gas (LPG) tank by metal magnetic memory testing (MMMT).
该检测系统依据采集的磁记忆信号，可准确地判断套管的应力集中区状况。
The system collects the magnetism memory signal liberating from stress concentrating area, hence fast and correctly to judge the stress concentration zone.
最后分析了夹具、载荷和材质对磁记忆信号的影响，并利用磁畴理论进行了分析解释。
There is a significant character before the fracture. At last, the inffllution of fixtures, loads and materials to magnetic memory signals is analyzied.
现场检测表明，利用一阶微分处理后的磁记忆信号定位特征，可准确地对焊接裂纹进行检测。
Spot inspection indicates that the welding cracks can be evaluated exactly by the location feature of derivative MMM signal.
在实际检测中，磁记忆信号属于随机信号、不具有平稳性，宜采用小波技术分析磁记忆信号。
In actual testing, magnetic memory signal belongs to random signal without stationarity, adjusting adopting wavelet technique to analyze magnetic memory signal.
由此证明磁记忆信号的幅度和梯度既与材料所处的整体应力有关，也与该部位的局部应力集中度有关。
The amplitude and gradient of MMMT signals not only relied on the average stress of the shell, but also relied on the local stress concentration.
该检测系统可根据在役套管的应力集中区所产生的磁记忆信号快速、准确地判断套管的应力集中区状况。
The system collects the magnetic memory signals liberated from the stress concentration zone of the in-use borehole casing pipe, judges fast and correctly the state of the zone.
以经爆破试验的四件小钢管件裂纹为研究对象，找出裂纹宽度与磁记忆信号的关系，得出漏磁场变化梯度的最大值随裂缝宽度增加而增加。
Through the examination experiment on four tube pieces crack part, the relation of crack width, the maximum of leaking magnetic field and differential coefficient K is found out.
利用EMS 2 0 0 0金属磁记忆诊断仪对三个不同构件进行检测试验，并使用信号处理软件对检测结果进行不同方式的分析。
Metal magnetic memory diagnostic instrument (EMS 2000) was used to test three different structures, and signal processing software was used to analyse test results in different ways.
研究地磁场环境中钢试件在动拉伸载荷作用下表面弱磁信号的变化以及磁记忆效应。
Weak magnetic signal changes and metal magnetic memory effects of steel tensile samples under the excitation of geomagnetic field were studied.
通过试验发现，磁记忆检测信号与构件的损伤状态之间具有明显的相关性，通过检测法向磁场的过零点可以实现对构件早期损伤的检测。
It is found that the MMM signal has apparent relationship with the damage, and that by the zero value of the MMM signal, the hidden damage in the ferromagnetic component can be detected.
结果表明，磁记忆检测信号与构件的损伤状态之间具有明显的相关性，磁场环境对改善金属磁记忆检测效果具有较好的作用。
It has been found that there is obvious correlation between the magnetic memory signal and the damage. This article has also studied how the magnetic field environment influence the magnetic me...
结果表明，磁记忆检测信号与构件的损伤状态之间具有明显的相关性，磁场环境对改善金属磁记忆检测效果具有较好的作用。
It has been found that there is obvious correlation between the magnetic memory signal and the damage. This article has also studied how the magnetic field environment influence the magnetic me...
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