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Engineering Physics by S. Mani Naidu

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CHAPTER 16

Non-destructive Testing Using Ultrasonics

16.1 Introduction

The quality and soundness of welded, casted, forged, etc. materials or the components of turbines, internal combustion engines, parts in automobiles, locomotives, aeroplanes, rail road tracks, pipeline, riveted joints in boilers, plates, hulls of ships, etc. after manufacture in industries or in service can be determined by destructive tests or by non-destructive tests. By carrying destructive tests the components become spoiled and they become useless. And by using non-destructive tests the components or parts are not damaged. The main purpose of non-destructive testing (NDT) is to detect and identify the defects and flaws in metals and in products without spoiling them. ...

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