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Class 4 (4th Engineer) MEKG 📅 Apr 2025

Exam Question

(a) Why engineering materials are tested prior manufacturing of their components. (6) 

(b) Name any three "Destructive" and three "Non-destructive" tests carried out on materials for shipboard used. Explain the purpose of each test and where same are applied. (10) 

Reference Answer

### (a) Reasons for Testing Engineering Materials (6 Marks)
Engineering materials are rigorously tested prior to the manufacturing of components to ensure the final product is fit for purpose, safe, reliable, and compliant with all regulations. As a Senior MEO Class 1 Examiner, I would expect the following points to be detailed for full marks:
1. **To Verify Suitability for the Intended Application:**
* Every component on a ship has a specific function and operates under a unique set of conditions (stress, temperature, corrosive environment). Testing confirms that the raw material possesses the required mechanical and chemical properties, such as tensile strength, hardness, ductility, toughness, and corrosion resistance, to perform that function effectively throughout its service life.

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