4/Dec/2017 16:08
	In slotted bar horns, slots typically crack at the slot-radius transition. Can slot stress be reduced 
		- With a keyhole slot?
		- By applying a compressive stress to the slot hole (see Campbell1, p. 260+) before adding the slot?
			(Theoretically, how does slot stress Kt (CARD says 2.4) compare to hole stress (3.0)?)
			What happens to the compressive stress after the slot is machined?
			
	Corrosive environment
		Milk cart sealing - what liquid was equip sprayed with?

	Steel parts subjected to wear conditions are often carburized or nitrided to harden the surface for greater wear resistance. Since both of these processes also introduce residual compressive stresses on the surface, there is an improvement in fatigue life. The greatest improvement occurs where a high stress gradient occurs, as in bending or torsion, with less improvement in axial loading. (Campbell1, p. 261)