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Experimental And Computational Study On Fracture Mechanics Of Multilayered Structures, Hai Thanh Tran
Experimental And Computational Study On Fracture Mechanics Of Multilayered Structures, Hai Thanh Tran
USF Tampa Graduate Theses and Dissertations
Many devices in electronics are in the form of multilayered structures. These structures can fail catastrophically if they contain defects or cracks. Enhancing their fracture properties is therefore critical to improve the reliability of the systems. The interface-dominated fracture mechanics of multilayered structure was studied using experiments and finite element (FE) modeling by considering two examples: thin films on polymer substrates in flexible electronics and Cu leadframe/epoxy molding compound (EMC) in micro-electronics packaging.
In the first example, aluminum-manganese (Al-Mn) thin films with Mn concentration up to 20.5 at.% were deposited on polyimide (PI) substrates. A variety of phases, including supersaturated …