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Analysis for Corrosion Monitoring and Prediction of Life of Mild Steel Plate by NDT Technique

Author(s):

Kuldeep Sahu , c v raman university; Nitin Shukla, c v Raman University

Keywords:

NDT, UT, Corrosion, Measurement Errors

Abstract

Mild Steel is one of the major construction materials used in the industries. Corrosion is one of the serious problem affecting ship, pipe line and aviation industries. It affects the body of ship and thickness of pipe and an Aeroplane wings, surface, between joints and fasteners with the increased utilization of this metal in the manufacturing and construction firms, one of the major problems encountered is the control of corrosion rate when exposed to different corrosive environments. Corrosion is a natural process that reduces the binding energy in metals with the end result involving a metal being oxidized as the bulk metal losses one or more electrons. During the thickness measurement of any corrode plate, Any material whose thickness is lower than the low limit of the probe due to corrosion of metal piece will cause Measurement errors. Sometimes the displayed reading is twice as big as the actual thickness. To prevent these errors, the critical thin Materials should be measured repeatedly for verification. This paper looks at the root causes of poor performance with ultrasonic. This paper summarizes some of the major aspects of precision ultrasonic thickness gauging. Ultrasonic nondestructive testing (NDT) characterizing material thickness, integrity, or other physical properties by means of high-frequency sound waves has become a widely used technique for quality control. In thickness gauging, ultrasonic techniques permit quick and reliable measurement of thickness without requiring access to both sides of a part. The presences of corrosion underneath the paints of surface and between joints are not easy to be detected. The unnoticed presence of corrosion may cause the many accident leading to human and money loses. To detect the thickness of the metal surface, various methods and tests are used. These tests conducted should be such that it does not destroy or disassemble the equipment to parts or damage its surface Hence for the further use of the equipment, Non-destructive tests (NDT) are carried out. In the field of NDT industry one of the most important method to detect the thickness of component is the ultrasonic thickness measurement. The change in the thickness of any plate with respect to the time is also helpful for determining the corrosion rate and prediction of remaining life of corrode plate as well as prediction for the measurement error due to corrosion of any steel plate.

Other Details

Paper ID: IJSRDV4I50134
Published in: Volume : 4, Issue : 5
Publication Date: 01/08/2016
Page(s): 936-941

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