Effect of vibration and package type on bruising in apples.
This thesis presents the effects of vibration and packaging systems on the bruising of apples. The study investigated four different types of interior packaging: the foam tray, the paper pulp tray, and two different paperboard partition/box combinations. Testing was done on a vibration table using a random controller driven by a power density spectrum simulating truck systems with leaf Spring and air cushion suspensions traveling on expressways. The results showed that the foam tray was the best type of interior packaging followed by the paperboard partitions. The paper pulp tray produced the highest damage levels. The air cushion truck suspension showed lower damage levels than the leaf spring suspension for all package types.