南昌航空大学学报（自然科学版）
南昌航空大學學報（自然科學版）
남창항공대학학보（자연과학판）
Journal of Nanchang Hangkong University(Natural Sciences)
2015年
3期
98-102
,共5页
在役球罐%TOFD检测技术%超声检测%磁粉检测%X射线检测
在役毬罐%TOFD檢測技術%超聲檢測%磁粉檢測%X射線檢測
재역구관%TOFD검측기술%초성검측%자분검측%X사선검측
oxygen tank in-service%TOFD detection%ultrasonic testing%magnetic particle testing%X-Ray testing
设计了超声波衍射时差法( TOFD)与手动超声( UT)及磁粉检测( MT)相结合的技术检测方案,对在役氧气球罐的对接焊缝进行无损检测. 针对TOFD上下表面的检测盲区,采用磁粉检测进行了补偿检测;用UT复验了TOFD检测出的缺陷,并与X射线检测结果进行了对比分析. 结果显示:针对同一焊缝, TOFD检测到多处密集型气孔缺陷,其中一处较为严重,且不达合格要求,常规超声和X射线检测只检测出较严重处的密集型气孔缺陷,也不达检测要求. 相比其他无损检测方法,TOFD检测更加高效,同时验证了所设计技术方案的可行性.
設計瞭超聲波衍射時差法( TOFD)與手動超聲( UT)及磁粉檢測( MT)相結閤的技術檢測方案,對在役氧氣毬罐的對接銲縫進行無損檢測. 針對TOFD上下錶麵的檢測盲區,採用磁粉檢測進行瞭補償檢測;用UT複驗瞭TOFD檢測齣的缺陷,併與X射線檢測結果進行瞭對比分析. 結果顯示:針對同一銲縫, TOFD檢測到多處密集型氣孔缺陷,其中一處較為嚴重,且不達閤格要求,常規超聲和X射線檢測隻檢測齣較嚴重處的密集型氣孔缺陷,也不達檢測要求. 相比其他無損檢測方法,TOFD檢測更加高效,同時驗證瞭所設計技術方案的可行性.
설계료초성파연사시차법( TOFD)여수동초성( UT)급자분검측( MT)상결합적기술검측방안,대재역양기구관적대접한봉진행무손검측. 침대TOFD상하표면적검측맹구,채용자분검측진행료보상검측;용UT복험료TOFD검측출적결함,병여X사선검측결과진행료대비분석. 결과현시:침대동일한봉, TOFD검측도다처밀집형기공결함,기중일처교위엄중,차불체합격요구,상규초성화X사선검측지검측출교엄중처적밀집형기공결함,야불체검측요구. 상비기타무손검측방법,TOFD검측경가고효,동시험증료소설계기술방안적가행성.
A detection scheme based on flight diffraction ( TOFD) and manual ultrasonic testing ( UT) , as well as magnetic particle testing ( MT) was designed to detect butt welds in oxygen tank in-service. MT was used for the compensation detection to TOFD testing blind spots which are in the top and bottom surface of weld. Using UT re-inspects the defects which were detected by TOFD, Additionally, the results were compared with X-Ray testingresults. The results is that TOFD detects many intensive stomatal defects, one of them is serious and does not meet the qualificationrequirements. However, UT and MT only detect one stomatal defect, which also does not meet the qualificationrequirements. It showed that TOFD is more efficiency compared to other NDT methods, at the same time, it also confirmed that the detection scheme was feasible.
