Mulya, Andre Tri (2017) Pengaruh Source Film Distance 120 Mm, 240 Mm, 360 Mm Terhadap Hasil Film Radiografi Pengujian Tak Rusak, Material Pipa Api 5l Grade B 4 Inchi Schedulle 40. Diploma thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Salah satu permasalahan dalam pengujian logam tak rusak dengan gamma rai ialah disaat posisi yang seharusnya kontak dan tak memungkinkan untuk kondisi standar yaitu source film distance Contact dibuat menjadi source film distance yang memiliki jarak tertentu.
Pada penelitian ini akan dianalisa mengenai pengaruh source film distance terhadap hasil yang terjadi pada film radiografi dan kelayakannya. Pipa API 5L Grade B diameter 4 inchi schedulle 40.
Pada hasil pengujian didapat bahwa, hasil densitas pada SFD 120 mm bernilai 2,68 jarak SFD 240mm bernilai 2,28 dan jarak SFD 360 mm bernilai 1,93. Tetapi untuk hasil sensitifitas tetap terlihat kawat penetrameter nomer 5. Nilai unsharpness geometric mengalami penurunan pada SFD 120 mm 0,28 mm SFD 240 mm 0,132 mm dan SFD 360 mm 0,086 mm. Bentuk gambar pada film dengan SFD kontak menampakan hasil single view dimana hanya satu sisi yaitu, kondisi pengelasan pada film side yang terlihat pada film. Tetapi jika dengan diamter luar pipa diatas 3,5 inchi yang dilakukan penambahan SFD maka membuat hasil gambar pengelasan pada film menjadi bertumpukan antara film side dan source side.
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One of the problems in testing nondestructive metal with gamma rai is when the position should be contact and not possible for the standard condition of the distance distance movie Contact is made into a distance of distance of a distance of the source film.
In this study will be analyzed about the effect of the distance film source on the results that occur in radiography film and feasibility. Pipe API 5L Grade B diameter 4 inchi schedule 40.
In the test results obtained, density results in SFD 120 mm worth 2.68 distance 240mm SFD worth 2.28 and 360 mm distance SFD worth 1.93. But for the sensitivity results still visible wire penetrameter number 5. The value of geometric unsharpness decreased at SFD 120 mm 0.28 mm SFD 240 mm 0.132 mm and SFD 360 mm 0.086 mm. The image shapes on film with SFD contacts show single view results where only one side is, the weld conditions on the film side seen on the film. But if with the outer diameter of the pipe above 3.5 inches done the addition of SFD then make the results of welding images on the film into a pile between the film side and source side.
| Item Type: | Thesis (Diploma) |
|---|---|
| Uncontrolled Keywords: | Pengujian radiografi, Source Film Distance, Densitas, sensitifitas |
| Subjects: | T Technology > T Technology (General) > T55 Industrial Safety |
| Divisions: | Faculty of Vocational > Mechanical Industrial Engineering |
| Depositing User: | Andre Trimulyo |
| Date Deposited: | 09 Jan 2018 01:37 |
| Last Modified: | 05 Mar 2019 07:04 |
| URI: | http://repository.its.ac.id/id/eprint/47911 |
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