Dye Penetrant Testing

PENETRANT TEST
Penetrant Test (PT) atau dapat disebut juga dengan istilah Dye Penetrant Check adalah teknik Non Destructive Testing yang berfungsi untuk mencari keretakan pada sebuah material yang diuji. Ada dua metode yang bisa digunakan pada Penetrant Test yaitu menggunakan perbedaan warna atau menggunakan fluoresensi. Metode yang paling umum digunakan adalah Penetrant Test mengguakan metode perbedaan warna.

ABSTRACT This paper presents a new NDT technique based on bacterial cell suspensions to identify surface micro defects in a procedure similar to the one used in dye penetrant. Validation was performed using Rhodococcus erythropolis bacteria in aluminum, steel and copper samples, studying the penetration, liquid removal and revelation stages and the phenomena involved in each one, as well as, bacteria/material interaction. A detectability limit was estimated and this was seen to depend on the material. Under the tested conditions defects with a depth of 4.3, 2.9 and 6.8 µm were identified in Al, steel and Cu, respectively.