Adequate Joining and Attachments

When the side wall of bottom-comer welds forms a right angle with the bottom, the fillet weld is seldom as smooth as shown in Fig. 11.24((j). It is usually rough and frequently varies in width 

Rounding the corner and moving the weld to the side wall overcomes both short comings as shown in Fig. 11.24(c). This construction has much improved corrosion resistance and also has better fatigue resistance. 

Part of the testing philosophy involves whether the test is intended to reproduce a certain environment accurately or whether it is more advisable to use a corrosive environment that represents a worst-case situation. In either case, the corrosion investigator must do everything possible to make the test reproducible by exercising explicit control over environmental factors such as concentration of reactants and contaminants, solution pH, temperature, aeration, velocity, impingement, and bacteriological effects [19]. 

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