计量学报
計量學報
계량학보
ACTA METROLOGICA SINICA
2015年
3期
303-308
,共6页
计量学%微磁检测技术%钢丝绳探伤%有限元模拟%节能化设计
計量學%微磁檢測技術%鋼絲繩探傷%有限元模擬%節能化設計
계량학%미자검측기술%강사승탐상%유한원모의%절능화설계
Metrology%Micro-magnetic NDT%Wire rope flaw detection%Finite element modelling%Energy saving design
为了探讨微磁检测技术在钢丝绳无损探伤领域的应用，采用有限元法，分析了无外加磁场激励状态下利用钢丝绳自身剩余磁场实现断丝缺陷检测的可行性。计算了钢丝绳缺陷处及周围空气中的漏磁场强度、分布规律及可测性；论述了地磁场的影响，为微磁检测技术提供了理论依据。通过对钢丝绳微磁检测方法的实验研究，得出了不同断丝状态下漏磁场的检测结果及变化规律。给出了钢丝绳金属截面损失与检测系统输出量的函数关系，验证了微磁无损探伤技术的可行性与可靠性。
為瞭探討微磁檢測技術在鋼絲繩無損探傷領域的應用，採用有限元法，分析瞭無外加磁場激勵狀態下利用鋼絲繩自身剩餘磁場實現斷絲缺陷檢測的可行性。計算瞭鋼絲繩缺陷處及週圍空氣中的漏磁場彊度、分佈規律及可測性；論述瞭地磁場的影響，為微磁檢測技術提供瞭理論依據。通過對鋼絲繩微磁檢測方法的實驗研究，得齣瞭不同斷絲狀態下漏磁場的檢測結果及變化規律。給齣瞭鋼絲繩金屬截麵損失與檢測繫統輸齣量的函數關繫，驗證瞭微磁無損探傷技術的可行性與可靠性。
위료탐토미자검측기술재강사승무손탐상영역적응용，채용유한원법，분석료무외가자장격려상태하이용강사승자신잉여자장실현단사결함검측적가행성。계산료강사승결함처급주위공기중적루자장강도、분포규률급가측성；논술료지자장적영향，위미자검측기술제공료이론의거。통과대강사승미자검측방법적실험연구，득출료불동단사상태하루자장적검측결과급변화규률。급출료강사승금속절면손실여검측계통수출량적함수관계，험증료미자무손탐상기술적가행성여가고성。
With the purpose of applying micromagnetic detection technology to nondestructive testing for wire ropes,the finite element method is used for analysis of the feasibility of the broken wire defects detection,using the residual magnetic field of the wire rope itself without extra magnetic field excitation. The wire rope defect points and the leakage magnetic field strength in surrounding air,distribution and the testability have been calculated. Then the influence of the geomagnetic field has been discussed,which is a theoretical basis for micromagnetic detection technology. Moreover,the testing results and the change laws in different broken wires states,as well as the functional relationship between the rope metal sectional area loss and the outputs of the detection system,are obtained through the experimental researches of micromagnetic detection method for wire ropes,that have verified the feasibility and reliability of micromagnetic nondestructive testing technology.
