Discussion
As the AZ91 is aged, both continuous and discontinuous precipitates are forming within the
microstructure. The beta phase Mg17Al12 which is produced, impedes lattice defects. As the AZ91
reaches its optimal ageing time it produces the maximum a

MECH3305
Age Hardening and Strengthening
Jacob Perry
42591094
Practical Group 4
Date of Experiments:
Heat Treating 8th of August
Microstructure Examination 22nd of August
Tensile and Hardness Testing 5th of September
1
Abstract
The influence of precipitat

Typical questions on exams
Types of study:
Experimental study
All explanatory variables are controlled or experimental
Observational study
The process or phenomenon is simply watched and data recorded (so constrained by situation)
Data types and roles
Nom

Finite Element Methods Summary
Contents
Symbols.3
Lecture 1.3
What is a node.3
What is an element.3
Distinguishing feature of the Finite Element Method.3
Structural elements dimensions.

School of Mechanical and Mining Engineering
The University Of Queensland
MECH2305 Introduction to Engineering
Design and Manufacturing
Reverse Engineering Assignment Report
Semester 1, 2014
Pallet B
42591094
Jacob Perry
This assignment involves creating a

Finite Element Methods Summary v2.0
Contents
Symbols.3
Lecture 1.3
Key steps of FEM.3
What is a node.3
What is an element.3
Distinguishing feature of the Finite Element Method.3
Structural elements dimensions.

MECH2300 Structures Equation Sheet
Materials Equations
Basic Definition:
F Axial
A
=
E=
Axial Stress
Axial modulus
=
L
L
Axial strain
=
F Shear
A
Shear Stress
G =
2
Shear Strain
Bending and Shear
M z y
Iz
Axial Bending Stress
=
Tr
Ip
Axial Shear Stress
=

MECH3305
Age Hardening and Strengthening
Jacob Perry
42591094
Practical Group 4
Date of Experiments:
Heat Treating week 3, 6th of August 2013
Microstructure Examination week 4, 13th of August 2013
Tensile and Hardness Testing week 6, 27th of August 2013
A

A Prognostic Method of Assessing Solder Joint Reliability Based on Digital Signal Characterization
JeongAh Yoon, Insun Shin, Juyoung Park, Daeil Kwon
Department of Human and System Engineering
UNIST (Ulsan National Institute of Science & Technology), Ulsa