Published date:Jul 03 2019

Journal Title: KnE Social Sciences

Issue title: UNNES International Conference on Research Innovation and Commercialization 2018

Pages:656–662

DOI: 10.18502/kss.v3i18.4756

Hendra Himawansusilosumarto@mail.unnes.ac.idPhysics Department, Faculty of Mathematics and Natural Sciences, Universitas Negeri Semarang, Central Java, Indonesia

Ulil Albab Taufiq1Physics Department, Faculty of Mathematics and Natural Sciences, Universitas Negeri Semarang, Central Java, Indonesia

Rudi SetiawanSekolah Tinggi Imu Kesehatan An Nasher Cirebon, West Java, Indonesia

Masturi .1Physics Department, Faculty of Mathematics and Natural Sciences, Universitas Negeri Semarang, Central Java, Indonesia

Susilo .1Physics Department, Faculty of Mathematics and Natural Sciences, Universitas Negeri Semarang, Central Java, Indonesia

Pratiwi Dwijananti1Physics Department, Faculty of Mathematics and Natural Sciences, Universitas Negeri Semarang, Central Java, Indonesia

Calcium Sulfate Dyhidrate/gypsum is a material commonly found in nature which is used at industrial site for making a wall, roof, etc. One of the problems found in material industry is crack deffect, white crack defects is very difficult be identified it visibility. Radiography Non-Destructive Test (RNDT) is non destructive test supported by digital radiographic producing digital image. This work aims to determine the gypsum properties to find out crack defect using RNDT. Radiographic image depends on exposure factors (kV, mA, s, and SID). Digital image can be proceed using OctaveGUI to determine the crack defect area, image processing using Prewitt detection. Radiographic digital result of 3gypsumboards (a,bandc) and 2gypsumpro filsamples (d and e) were found the crack on each samples. RNDT was perfomed using X-ray voltageat60kVona,b,c,d,andesamples.Eachsamplescrackareavalueare158.13 mm2; 127.43 mm2; 196.81 mm2; 73.97 mm2; dan 18.80 mm2. Others RNDT was using X-ray voltage at 70 kV on samples a, b, c, d, and e. Each samples crack area value are 220.62 mm2; 1,711.57 mm2; 209.33 mm2; 76.50 mm2; dan 11.18 mm2. In conlusion, the crack area values obtained can be used as RNDT.

Keywords: X-ray, Gypsum, RNDT, Image Processing.

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