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one file is attached

one file is attached

One file is attached.

One file is attached.

Abstract:

As the thickness of coating thin
film is reduced it becomes increasingly difficult to measure their adhesion,
hardness, toughness by conventional methods. Indentation test methods are well
established for the determination of elastic modulus and hardness, but methods
for assessment of fracture properties are much less developed. In this term
paper, existing metrology of using indention to study fracture toughness will
be summarized and mechanics of fracture under indentation will be studied.
Experimental plans of investigation fracture toughness of OSG low-K film will
also be evaluated in the end.

Early applications of the finite element method to crack problem was
developed by Swedlow and et al. Even though they could get reasonable
accuracy about 5 to 10%, later study showed that solutions in the
vicinity of the crack tip cannot be guranteed to be accurate regardless
of the mesh density around tip. In order to overcome this problem,
people developed special crack tip elements.

In this term paper, I'm going to present 1) Finite Element Method in
Fracture Mechanics and 2) NewFinite Element technique so called Extended Element Method.

Abstract

One of the most common problems in older people is the fragility of the bones. Human bones are prone to fracture, and fracture of certain bones in the body such as the cortical bone may be fatal. Understanding of the fracture mechanism of bones is essential for the medical profession, and plays a major role in the study of osteoporosis as well.  

Abstract: 

Abstract

The objective of this paper is to analyze the fracture of orthotropic materials, with emphasis on wood.