fracture mechanics

Noel ODowd's picture

Postdoctoral research position in Fracture Mechanics at University of Limerick, Ireland

Department of Mechanical & Aeronautical Engineering, University of Limerick, Ireland

 

Postdoctoral Researcher in Fracture Mechanics  

Salary Scale: Postdoctoral Researcher €39,589- €56,143 p.a. – Maximum Starting Salary €41,488 p.a. (approx. $65,870 p.a.)  


Crack Propagation in Contact Fatigue

are there any codes available for the crack propagation under fatigue loading? taking into consideration the contact between the crack faces.


Rui Huang's picture

EM 388F Lecture Notes 9: Nonlinear Fracture Mechanics II

one file is attached


Rui Huang's picture

EM 388F Lecture Notes 8: Nonlinear Fracture Mechanics I

one file is attached


Gradient based cohesive zone models

Hello,

Strain gradient based (non-local) plasticity and damage models have been studied quite extensively in the literature.

 I was wondering if anyone has experience in the development of cohesive zone models that obtain the tractions in front of crack tip not only as a function of the diplacement jump, but also as a function of the gradient of displacement jump.

 If yes, can you please point me to the reference?


Rui Huang's picture

EM 388F Homework Problems 29-30

One file is attached.


Rui Huang's picture

EM 388F Homework Problems 24-28

One file is attached.


Issue 2 of J. Mechanical Behavior of Biomedical Materials published

I am pleased to announce that Volume 1, Number 2 of the the recently-launched Journal of the Mechanical Behavior of Biomedical Materials (www.elsevier.com/locate/jmbbm) has been published by Elsevier. All JMBBM articles can be accessed free-of-charge on ScienceDirect until September 2008 (http://www.sciencedirect.com/science/journal/17516161).


Huai Huang's picture

EM 388F Term Paper: Indentation Fracture Toughness Measurement And Application to Low K Thin Film


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.

 

 


EM388F Term Paper: Finite Element MEthod in Fracture Mechanics

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.


EM 388F Term Paper: Application of Fracture Mechanics on Cortical Bone Studies

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.  


Julian Hallai's picture

EM388F Term Paper: Fracture of Orthotropic Materials under Mixed Mode Loading

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


justin.babcock's picture

EM 388F Term Paper: Theory and analysis tech for the use of a DCB specimen for determining the toughness of PC-3 Prostate Cancer

A double cantilever beam (DCB)
specimen is created by affixing the two halves together using a bi-layer of
PC-3 prostate cancer cells. The specimen is pinned at a bottom corner, and the
upper corner on the same end is displaced with the force-displacement profile
being recorded. This upper corner is displaced until the crack, a portion of
the specimen where cell grown has been selectively inhibited, propagates
through the cell layer. The critical value of force at which the crack
propagates through the cell layer is used, in conjunction with the initial
crack length, to determine the toughness via the compliance-energy method (Ripling, et al. 1971). A method for performing a FE analysis of the


Rui Huang's picture

EM 388F Term Paper

Assignment: Each student completes a term paper of selected topics that (a) addresses a fracture phenomenon in materials or structures, and (b) involves analyses using fracture mechanics. The project contributes 25% of the final grade, distributed as follows:


Rui Huang's picture

EM 388F Lecture Notes 6: Applications of LEFM

one file is attached.


Rui Huang's picture

EM 388F Homework Problems 19-23

one file is attached.


Program available for 7th IC Fatigue Damage of Structural Materials

The full oral program for the 7th International Conference on Fatigue Damage of Structural Materials is now available at http://www.fatiguedamage.elsevier.com/index.htm. Join your peers by registering for this popular single-stream meeting held in Hyannis, MA, USA on beautiful Cape Cod, September 14-19, 2008.  


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