Advanced Materials Course Tutorial Questions 1: Experimental Techniques 1. What information can be found from the following techniques? and what are the advantages and disadvantages of each technique? • optical microscopy (stereo, reflected and transmitted light) • SEM • XRD • chemical analysis • hardness testing • tensile testing

Failure Analysis 2. Photographs from fracture surfaces of two broken tools from a pneumatic drill are shown (Fig A). The circular fracture surface is 35 mm in diameter and the other is ca. 24 x 39 mm. Discuss the features of each fracture surface and relate them to the mechanisms by which the failure occurred.

Fig A fracture surfaces of two broken tools from a pneumatic drill.

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