Effect of Eddy Currents on Discontinuity of Different Metals

الموضوعات

علوم بحتة وطبيعية

الملخص

The objective of thesis to inspect discontinuities such as cracks, scores,Corrosion pits, seams, laps, inclusions etc. will disrupt the eddy currents andmay cause an indication. Study design: The learner will use the descriptiveanalytic and experimental approaches to carry out this research. Alternatingelectrical current is passed through a coil producing a magnetic field. Whenthe coil is placed near conductive material, the changing magnetic fieldinduces current flow in the material .these currents travel in closed loops andare called eddy currents. Eddy currents produce their own magnetic field thatcan be measured and used to find flaws and characterize conductivity,permeability, and dimensional features. In this study eddy current testingtechnique was used Defect meter 2.837 to study defect on some selectedsamples and report was considered.This thesis reviews the state-of-the-art methods of eddy current testing whichis one of the most widely used non-destructive forms of testing. Eddy currenttesting permits crack detection and measurements that are beyond the scopeof other techniques such as non-conductive coating thickness, alloycomposition and hardness in a large variety of materials. The only need is thatthe materials being tested must be electrical conductors where eddy currentscan flow. Eddy current sensors are insensitive to dirt, dust, humidity, oil ordielectric material in the measuring gap and have been proven reliable in awide range. In conclusion, as researchers and developers of solutions basedon eddy current testing, it was found that eddy current techniques can providethe industry with reliable quality control systems. Although there areexcellent improvements due to the effort of the many scientists during the lastseveral years, we believe that more research in eddy current techniques, interms of sensors, equipment and signal processing, will lead to even moreapplications of these techniques. From inspection done in the KhartoumVInternational Airport it was concluded that there is defect on the samples thatinspected under Defect meter 2.837 as prescribed in the report.It is necessary trying to develop new coil probes and research the use of othermagnetometers such as superconducting quantum interference devices(SQUIDs), Hall-effect and magneto resistive sensors that also provide veryinteresting responses.

روابط وملفات

التعريف والنوع

رقم الوثيقة

f1dd90cc-208f-4aad-a744-7f0214d2d233

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل ماجيستير

نوع الملف

pdf text

أسماء الملفات

2031220_1.pdf

بيانات النشر

ترجمة العنوان

تأثير التيارات الدوامية على الانقطاعات لمعادن مختلفة

ألقاب المؤلفين

[{"name_ar":" Rawia Abdelgani Elobaid Mohammed","title_ar":"اشراف","title_en":"Supervision"},{"name_ar":"Marwa Nouraldaim Hussein Elamin","title_ar":"اعداد","title_en":"Preparation"}]

اللغة

English

المصدر والدورية

اسم المصدر

Effect of Eddy Currents on Discontinuity of Different Metals

المحتوى والصفحات

عدد الصفحات

0

إشراف وإعداد

الإشراف

Rawia Abdelgani Elobaid Mohammed

الإعداد

Marwa Nouraldaim Hussein Elamin

الاقتباسات الببليوغرافية