D. Mukherjee: About the Author
Head of Quality Assurance Division, Bhabha Atomic Research Centre
D.Mukherjee is a graduate in Metallurgical Engineering from Indian Institute of Engineering Science & Technology, Shibpur, Kolkata. His areas of expertise include Quality Control, Nondestructive Evaluation, and Characterization of different types of nuclear fuels and reactor components. He has developed inspection technology for MOX fuel pellets and several NDE techniques for evaluation of fuel elements. He is an NDE level III in Ultrasonic testing and an experienced practitioner in digital radiography. His areas of interest are digital radiography, ultrasonic, metallography, imaging, and image analysis.
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Published Articles
With the advent of digital technology, image processing can be done in digital radiographs which can be used for automated detection and quantification of defects. It is important to know the system's limitations and the probability of detection.
The structural integrity of components is controlled by material properties, the presence of flaws, and levels of applied stress. Several factors such as temperature, type of loading, toughness, corrosion resistance, micro-structural stability, cost etc. dictate the suitable material for the desired application.
The Modulation Transfer Function (MTF) is used in imaging science to assess the reliability of imaging systems to produce different spatial frequency. In digital radiography, it can be used to detect frequency responses of different inspection conditions.
Radiography technique is one of the most widely utilized non-destructive methods, used in industry to evaluate the structural integrity or find out the hidden details of an assembled structure. Since this method uses ionizing radiation, it is important to ensure not only the quality of product, but also the safety of the technician and the general public, as well as the protection of the environment.
Rapid industrial and technological growth throughout the world makes it necessary to develop new materials along with advanced Non-Destructive Testing (NDT) Methods to ensure their quality without premature failures. The complex modern system, where materials are required to perform consistently with optimum efficiency, demands stringent quality control of engineered components.
