Browsing Journal Articles by Author "Hafizal, Yazid"

Now showing items 1-3 of 3

    • Automated thresholding in radiographic image for welded joints 

      Haniza, Yazid; Hamzah, Arof, Dr.; Hafizal, Yazid (Taylor & Francis, 2012)
      Automated detection of welding defects in radiographic images becomes non-trivial when uneven illumination, contrast and noise are present. In this paper, a new surface thresholding method is introduced to detect defects ...

    • Circular discontinuities detection in welded joints using Circular Hough Transform 

      Hafizal, Yazid; Haniza, Yazid; Mohd Harun; Shukri Mohd; A. Aziz, Mohamed; Mohamed Rizon, Mohamed Juhari; Shaharudin, Sayutia (Elsevier B.V., 2007)
      Conventional radiography is one of the common non-destructive testing which employs manual image interpretation. The interpretation is very subjective and depends much on the inspector experience and working conditions. ...

    • The root caused analysis of leakaged heat exchanger tube 

      Shaiful Rizam, Shamsudin; Mohd Arif Anuar, Mohd Salleh; Azmi, Rahmat, Assoc. Prof. Dr.; Mazlee, Mohd Noor, Dr.; Mohd Harun; Hafizal, Yazid (Carl Hanser Verlag GmbH & Co., 2015-03)
      AISI type 316L stainless steel was used as a heat exchanger tube material in an inter-cooler column. After less than a year of operation, severe corrosion failures occurred and a transverse opening leakage was observed on ...