JESTION 2/ SOALAN 2 (20 Marks/20 Markah) Failure mechanism of metal is one of the important aspects of material selection. Mekanisma kegagalan logam ialah aspek-aspek penting dalam pemilihan bahan. a. Explain TWO (2) reasons why failure analysis must be performed on a newly developed material before its application. (6 marks) Jelaskan DUA (2) alasan kenapa analisis kegagalan mesti dilakukan ke atas bahan baharu dihasilkan sebelum penggunaannya. (6 markah) b. The rapid sinking of the R.M.S Titanic on April 12, 1912, after colliding with an iceberg in the sub-zero waters of the Atlantic was associated to brittle fracture of the hull steel. Explain in detail how the initially ductile Titanic steel could fail due to brittle fracture? (8 marks) Penenggelaman pantas R.M.S Titanic pada 12 April 1912 selepas berlanggar dengan ketulan ais di perairan sub-sifar Atlantik dikaitkan dengan keretakan rapuh keluli badan kapal. Terangkan terperinci bagaimana keluli Titanic yang mula mulur boleh gagal akibat keretakan rapuh? (8 markah) c. Describe TWO (2) factors that can reduce the fatigue strength of a material. Jelaskan DUA (2) faktor yang mengurangkan kekuatan lesu bahan. (6 marks) (6 markah)