Saputra, Andi (2023) NON-DESTRUCTIVE TESTING CONTROLLER AND MONITORING DENGAN METODE UJI EDDY CURRENT TESTING PADA OBJEK LOGAM. S1 thesis, Fakultas Teknik Universitas Sultan Ageng Tirtayasa.
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Abstract
Non-destructive testing using the eddy current testing method is one of the most widely used methods because of its several advantages, such as being sensitive and being able to measure the depth of the object. But to make this measurement must be trained, because one of the biggest factors that cause measurement errors is human error which is the difference in lift off at each measurement point is so important. This can be overcome by creating an automation system driven by a stepper motor so that the test results are more accurate. In addition, EMI noise can greatly affect the measurement results because this sensor is very sensitive. This can also be solved by making a 2nd order sallen key low pass filter which was carried out in this study and managed to attenuate the EMI noise signal well. Apart from these two factors, the signal generator used also influences the measurement results so that a stable signal generator is needed and in this study the signal generator was successfully made using the AD9850 module with several filters and succeeded in producing a stable output of 10 Vpp 10 kHz. The system showed an increase in accuracy with the parameter correlation coefficient from 0.67 to 0.76 for the hole in the center and 0.57 to 0.65 for the hole on the edge.
| Item Type: | Thesis (S1) | |||||||||
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| Additional Information: | Pengujian tanpa merusak atau non-destructive testing dengan metode uji Eddy current testing merupakan salah satu metode yang paling banyak digunakan karna beberapa keuntungannya seperti sensitif dan dapat mengukur kedalaman benda uji. Namun untuk melakukan pengukuran ini harus terlatih, dikarenakan salah satu faktor terbesar penyebab kesalahan pengukuran adalah human error atau lebih tepatnya perbedaan lift off pada setiap titik pengukuran. Hal ini dapat ditanggulangi dengan membuat sistem otomasi yang digerakan oleh stepper motor sehingga hasil pengujian lebih akurat. Selain itu noise Electromagnetic Interference (EMI) dapat sangat mempengaruhi hasil pengukuran dikarenakan sensor ini sangat sensitif. Hal ini juga dapat diselesaikan dengan membuat low pass filter sallen key orde 2 yang dilakukan pada penelitian ini dan berhasil meredam sinyal noise EMI dengan baik. Selain dari dua faktor itu, signal generator yang digunakan juga berpengaruh pada hasil pengukuran sehingga dibutuhkan signal generator yang stabil dan pada penelitian ini signal generator tersebut berhasil dibuat dengan menggunakan modul AD9850 serta beberapa filter dan berhasil mengeluarkan sinyal AC stabil 10 Vpp 10 kHz. Sistem yang dibuat menunjukan peningkatan akurasi dengan parameter koefisien korelasi dari 0,67 menjadi 0,76 untuk benda uji lubang di tengah dan 0,57 menjadi 0,65 untuk benda uji lubang di pinggir. | |||||||||
| Subjects: | T Technology > T Technology (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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| Divisions: | 03-Fakultas Teknik 03-Fakultas Teknik > 20201-Jurusan Teknik Elektro |
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| Depositing User: | Mr. Andi Saputra | |||||||||
| Date Deposited: | 07 Aug 2023 17:00 | |||||||||
| Last Modified: | 07 Aug 2023 17:00 | |||||||||
| URI: | http://eprints.untirta.ac.id/id/eprint/27794 |
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