Lover of Wisdom
Religion - Philosophy - Science
What made change possible ?
Natural Phenomenon - Nation - Individual
What is the universe made of ?
1.How could human know something beyond sense perception ?
Plato : Form of Theory, Allegory of Cave
2.What can we know ?
Descartes : I think, therefore, I am.
3.What is the limit of human reason ?
Kant : Critique of Pure Reason
4. What should we do ?
Kant : Critique of Practical Reason
5.What can we hope for ?
Kant : Critique of Judgment
Thursday, September 19, 2013
Thursday, April 25, 2013
Saturday, April 20, 2013
Wednesday, April 10, 2013
1 - Tension, Compression, and Shear
Principle of Economics
The word " Economy " comes from the Greek word for " one who manages a household ".
Sunday, April 7, 2013
Nippon Economy
During 1945-1990, Japan was the most stable country in economy and politic, after the collapse of Soviet Union the environment began to change, the following will subvert your knowledge.
Friday, April 5, 2013
12 - Kinematics of a Particle
12.1 Introduction
12.2 Rectilinear Kinematics : Continuous Motion
12.3 rectilinear Kinematics : Erratic Motion
12.4 General Curvilinear Motion
12.5 Curvilinear Motion : Rectilinear Components
12.6 Motion of a Projectile
12.7 Curvilinear Motion : Normal and Tangential Components
12.8 Curvilinear Motion : Cylindrial
12.9 Absolute Dependent Motion Analysis of Two Particles
12.10 Relative-Motion of Two Particles Using Translating Axes
12.2 Rectilinear Kinematics : Continuous Motion
12.3 rectilinear Kinematics : Erratic Motion
12.4 General Curvilinear Motion
12.5 Curvilinear Motion : Rectilinear Components
12.6 Motion of a Projectile
12.7 Curvilinear Motion : Normal and Tangential Components
12.8 Curvilinear Motion : Cylindrial
12.9 Absolute Dependent Motion Analysis of Two Particles
12.10 Relative-Motion of Two Particles Using Translating Axes
Ch 1 - An Introduction to the Use of Finite Element Procedures
1.1 Introduction
1.2 Physical Problems, Mathematical Models, and the Finite Element Solution
1.3 Finite Element Analysis as an Integral Part of Computer-Aided Design
1.4 A Proposal on How to Study Finite Element Methods
1.2 Physical Problems, Mathematical Models, and the Finite Element Solution
1.3 Finite Element Analysis as an Integral Part of Computer-Aided Design
1.4 A Proposal on How to Study Finite Element Methods
Sunday, March 31, 2013
Saturday, March 30, 2013
2 - Vectors, Matrices, and Tensors
2.1 Introduction
2.2 Introduction to Matrices
2.3 Vector Spaces
2.4 Definition of Tensors
2.5 The Symmetric Eigenproblem
2.6 The Rayleigh Quotient and the Minimax Characterization
2.7 vector and Matrix Norms
2.8 Exercises
2.2 Introduction to Matrices
2.3 Vector Spaces
2.4 Definition of Tensors
2.5 The Symmetric Eigenproblem
2.6 The Rayleigh Quotient and the Minimax Characterization
2.7 vector and Matrix Norms
2.8 Exercises
2 - Motion Along a Straight Line
2-1 What is Physics ?
2-2 Motion
2-3 Position and Displacement
2-4 Average Velocity and Average Speed
2-5 Instantaneous Velocity and Speed
2-6 Acceleration
2-7 Constant Acceleration : Speed Case
2-8 Another Look at Constant Acceleration
2-9 Free-Fall Acceleration
2-10 Graphical Integration in Motion Analysis
2-2 Motion
2-3 Position and Displacement
2-4 Average Velocity and Average Speed
2-5 Instantaneous Velocity and Speed
2-6 Acceleration
2-7 Constant Acceleration : Speed Case
2-8 Another Look at Constant Acceleration
2-9 Free-Fall Acceleration
2-10 Graphical Integration in Motion Analysis
Monday, March 25, 2013
1 - Introduction and Basic Concepts
1-1 Thermodynamics and Energy
1-4 Properties of a System
1-6 State and Equilibrium
1-12 Problem-Solving Technique
Summary
- Applications Areas of Thermodynamics
- Some SI and English Units
- Dimension Homogeneity
- Unity Conversion Ratios
1-4 Properties of a System
- Continuum
1-6 State and Equilibrium
- The State Postulate
- The Steady-Flow Process
- Temperature Scales
- The International Temperature Scale of 1990
- Variation of Pressure with Depth
- Other Pressure Measurement Devices
1-12 Problem-Solving Technique
Summary
3 - Vectors
3-1 What is Physics
3-2 Vectors and Scalars
3-3 Adding Vectors Geometrically
3-4 Components of Vectors
3-5 Unit Vectors
3-6 Adding Vector by Components
3-7 Vectors and the Laws of Physics
3-8 Multiplying Vectors
3-2 Vectors and Scalars
3-3 Adding Vectors Geometrically
3-4 Components of Vectors
3-5 Unit Vectors
3-6 Adding Vector by Components
3-7 Vectors and the Laws of Physics
3-8 Multiplying Vectors
Wednesday, March 20, 2013
2 - Energy Conversion and General Energy Analysis
2-1 Introduction
2-2 Forms of Energy
2-8 Energy and Environment
2-2 Forms of Energy
- Some Physical Insight to Internal Energy
- Mechanical Energy
- More on Nuclear Energy
- Historical Background on Heat
- Electrical Work
- Shaft Work, Spring Work
- Work Done on Elastic Solid Bars
- Work Associated with the Stretching of a Liquid Film
- Work Done to Raise or to Accelerate a Body
- Non-mechanical Forms of Works
- Energy Balance
- Energy Change of a System
- Mechanism of Energy Transfer
2-8 Energy and Environment
- Ozone and Smog
- Acid Rain
- The Greenhouse Effect : Global Warming and Climate Change
0 - Machine Design
Totally different machine design concept.
No Right or Wrong , Just Advantage and Disadvantage.
4 - Motion in Two and Three Dimensions
4-1 What is Physics
4-2 Position and Displacement
4-3 Average Velocity and Instantaneous Velocity
4-4 Average Acceleration and Instantaneous Acceleration
4-5 Projectile Motion
4-6 Projectile Motion Analyzed
4-7 Uniform Circular Motion
4-8 Relative Motion in One Dimension
4-9 Relative Motion in Two Motion
4-2 Position and Displacement
4-3 Average Velocity and Instantaneous Velocity
4-4 Average Acceleration and Instantaneous Acceleration
4-5 Projectile Motion
4-6 Projectile Motion Analyzed
4-7 Uniform Circular Motion
4-8 Relative Motion in One Dimension
4-9 Relative Motion in Two Motion
Friday, March 15, 2013
5 - Force and Motion - I
5-1 What is Physics ?
5-2 Newtonian Mechanics
5-3 Newton's First Law
5-4 Force
5-5 Mass
5-6 Newton's Second Law
5-7 Some Particular Forces
5-8 Newton's Third Law
5-9 Applying Newton's Laws
5-2 Newtonian Mechanics
5-3 Newton's First Law
5-4 Force
5-5 Mass
5-6 Newton's Second Law
5-7 Some Particular Forces
5-8 Newton's Third Law
5-9 Applying Newton's Laws
1 - Introduction : Standard, Codes, Regulations
1-1 The Designer and the Designer's Problems
1-2 Decisions and Their Identification
1-3 Adequancy Assessment
1-4 Communication of Engineering Information
1-5 Legal Considerations in Design
1-6 Standards, Codes, and Governmental Regulations in Design
1-7 Sources of Standards, Codes, Governmental Regulations, Indexes, and Standardization
Activities
1-2 Decisions and Their Identification
1-3 Adequancy Assessment
1-4 Communication of Engineering Information
1-5 Legal Considerations in Design
1-6 Standards, Codes, and Governmental Regulations in Design
1-7 Sources of Standards, Codes, Governmental Regulations, Indexes, and Standardization
Activities
Sunday, March 10, 2013
6 - Force and Motion - II
6-1 What is Physics ?
6-2 Friction
6-3 Properties of Friction
6-4 The Drag Force and Terminal Speed
6-5 Uniform Circular Motion
6-2 Friction
6-3 Properties of Friction
6-4 The Drag Force and Terminal Speed
6-5 Uniform Circular Motion
2 - Statistical Considerations
2-1 Introduction
2-2 Histographic Evidence
2-3 Useful Distributions
2-4 Random-Variable Algebra
2-5 Stochastic Endurance Limit by Correlation and by Test
2-6 Interference
2-7 Numbers
2-2 Histographic Evidence
2-3 Useful Distributions
2-4 Random-Variable Algebra
2-5 Stochastic Endurance Limit by Correlation and by Test
2-6 Interference
2-7 Numbers
Tuesday, March 5, 2013
7 - Kinetic Energy and Work
7-1 What is Physics ?
7-2 What is Energy ?
7-3 Kinetic Energy
7-4 Work
7-5 Work and Kinetic Energy
7-6 Work Done by Gravitational Force
7-7 Work Done by a Spring Force
7-8 Work Done by a General Variable Force
7-9 Power
7-2 What is Energy ?
7-3 Kinetic Energy
7-4 Work
7-5 Work and Kinetic Energy
7-6 Work Done by Gravitational Force
7-7 Work Done by a Spring Force
7-8 Work Done by a General Variable Force
7-9 Power
3 - Measurement and Inference
3-1 The Measurement Problem
3-2 Definition of Measurement
3-3 Standards of Measurement
3-4 The Measuring System
3-5 Calibration
3-6 Design of the Measurement System
3-7 Selected Measurement-System Components and Examples
3-8 Sources of Error in Measurement
3-9 Analysis of Data
3-10 Confidence Limits
3-11 Propagation of Error or Uncertainty
3-2 Definition of Measurement
3-3 Standards of Measurement
3-4 The Measuring System
3-5 Calibration
3-6 Design of the Measurement System
3-7 Selected Measurement-System Components and Examples
3-8 Sources of Error in Measurement
3-9 Analysis of Data
3-10 Confidence Limits
3-11 Propagation of Error or Uncertainty
Friday, March 1, 2013
4 - Numerical Methods
4-1 Numbers
4-2 Functions
4-3 Series
4-4 Approximations and Error
4-5 Finite-Difference Approximations
4-6 Numerical Integration
4-7 Curve Fitting for Precision Points
4-8 Curve Fitting by Least Squares
4-9 Curve Fitting for Several Variables
4-10 Interpolation
4-11 Root Finding
4-2 Functions
4-3 Series
4-4 Approximations and Error
4-5 Finite-Difference Approximations
4-6 Numerical Integration
4-7 Curve Fitting for Precision Points
4-8 Curve Fitting by Least Squares
4-9 Curve Fitting for Several Variables
4-10 Interpolation
4-11 Root Finding
Thursday, February 28, 2013
Monday, February 25, 2013
5 - Computational Considerations
5-1 Introduction
5-2 An Algorithmic Approach to Design
5-3 Analysis Tasks
5-4 Mathematical Tasks
5-5 Statistical Tasks
5-6 Optimization Tasks
5-7 Simulation
5-2 An Algorithmic Approach to Design
5-3 Analysis Tasks
5-4 Mathematical Tasks
5-5 Statistical Tasks
5-6 Optimization Tasks
5-7 Simulation
8 - Potential Energy and Conservation of Energy
8-1 What is Physics
8-2 Work and Potential Energy
8-3 Path Independence of Conservative Forces
8-4 Determining Potential Energy Values
8-5 Conservation of Mechanical Energy
8-6 Reading a Potential Energy Curve
8-7 Work Done on a System by an External Force
8-8 Conservation of Energy
8-2 Work and Potential Energy
8-3 Path Independence of Conservative Forces
8-4 Determining Potential Energy Values
8-5 Conservation of Mechanical Energy
8-6 Reading a Potential Energy Curve
8-7 Work Done on a System by an External Force
8-8 Conservation of Energy
Wednesday, February 20, 2013
6 - Wear
6-1 General Principles in Design for Wear Resistance
6-2 Steps in Design for Wear Life Without Selecting Materials
6-3 Wear Equations
6-4 Steps in Selecting Material for Wear Resistance
6-5 Material - Selection Procedure
6-2 Steps in Design for Wear Life Without Selecting Materials
6-3 Wear Equations
6-4 Steps in Selecting Material for Wear Resistance
6-5 Material - Selection Procedure
9 - Center of Mass and Linear Momentum
9-1 What is Physics ?
9-2 The Center of Mass
9-3 Newton's Second Law for a System of Particles
9-4 Linear Momentum
9-5 The Linear Momentum of a System of Particle
9-6 Collision and Impulse
9-7 Conservation of Linear Momentum
9-8 Momentum and Kinetic Energy in Collisions
9-9 Inelastic Collisions in One Dimension
9-10 Elastic Collisions in One Dimension
9-11 Collisions in Two Dimension
9-12 System with Varying Mass : A Rocket
9-2 The Center of Mass
9-3 Newton's Second Law for a System of Particles
9-4 Linear Momentum
9-5 The Linear Momentum of a System of Particle
9-6 Collision and Impulse
9-7 Conservation of Linear Momentum
9-8 Momentum and Kinetic Energy in Collisions
9-9 Inelastic Collisions in One Dimension
9-10 Elastic Collisions in One Dimension
9-11 Collisions in Two Dimension
9-12 System with Varying Mass : A Rocket
Friday, February 15, 2013
7 - Solid Materials
7-1 Structure of Solid
7-2 Atomic Bonding Forces
7-3 Atomic Structure
7-4 Crystal Imperfections
7-5 Slip in Crystalline Solids
7-6 Mechanical Strength
7-7 Mechanical Properties and Tests
7-8 Hardness
7-9 The Tensile Test
7-10 Tensile Properties
7-11 Strength, Stress, and Strain Relations
7-12 Impact Strength
7-13 Creep Strength
7-14 Mechanical-Property Data
7-15 Numbering Systems
7-2 Atomic Bonding Forces
7-3 Atomic Structure
7-4 Crystal Imperfections
7-5 Slip in Crystalline Solids
7-6 Mechanical Strength
7-7 Mechanical Properties and Tests
7-8 Hardness
7-9 The Tensile Test
7-10 Tensile Properties
7-11 Strength, Stress, and Strain Relations
7-12 Impact Strength
7-13 Creep Strength
7-14 Mechanical-Property Data
7-15 Numbering Systems
10 - Rotation
10-1 What is Physics ?
10-2 The Rotational Variables
10-3 Are Angular Quantities Vectors ?
10-4 Rotation with Constant Angular Acceleration
10-5 Relating the Linear and Angular Variables
10-6 Kinetic Energy of Rotation
10-7 Calculating the Rotational Inertia
10-8 Torque
10-9 Newton's Second Law for Rotation
10-10 Work and Rotational Kinetic Energy
10-2 The Rotational Variables
10-3 Are Angular Quantities Vectors ?
10-4 Rotation with Constant Angular Acceleration
10-5 Relating the Linear and Angular Variables
10-6 Kinetic Energy of Rotation
10-7 Calculating the Rotational Inertia
10-8 Torque
10-9 Newton's Second Law for Rotation
10-10 Work and Rotational Kinetic Energy
Sunday, February 10, 2013
8 - The Strength of Cold-Worked and Heat-treated Steels
8-1 Introduction
8-2 Strength of Plastically Deformed Materials
8-3 Estimating Ultimate Strength after Plastic Strains
8-4 Estimating Yield Strength after Plastic Strains
8-5 Estimating Ultimate Strength of Heat-Treated Plain Carbon Steels
8-6 Estimating Ultimate Strength of Heat-treated Low-Alloy Steels
8-7 Tempering Time and Temperature Tradeoff Relation
8-8 Computer Programs
8-2 Strength of Plastically Deformed Materials
8-3 Estimating Ultimate Strength after Plastic Strains
8-4 Estimating Yield Strength after Plastic Strains
8-5 Estimating Ultimate Strength of Heat-Treated Plain Carbon Steels
8-6 Estimating Ultimate Strength of Heat-treated Low-Alloy Steels
8-7 Tempering Time and Temperature Tradeoff Relation
8-8 Computer Programs
11 - Rolling, Torque, and Augular Momentum
11-1 What is Physics ?
11-2 Rolling as Translation and Rotation Combined
11-3 The Kinetic Energy of Rolling
11-4 The Forces of Rolling
11-5 The Yo-Yo
11-6 Torque Revisited
11-7 Angular Momentum
11-8 Newton's Second Law in Angular Form
11-9 The Angular Momentum of s System of Particles
11-10 The Angular Momentum of a Rigid Body Rotation about a Fixed Axis
11-11 Conservation of Angular Momentum
11-12 Precession of a Gyroscope
11-2 Rolling as Translation and Rotation Combined
11-3 The Kinetic Energy of Rolling
11-4 The Forces of Rolling
11-5 The Yo-Yo
11-6 Torque Revisited
11-7 Angular Momentum
11-8 Newton's Second Law in Angular Form
11-9 The Angular Momentum of s System of Particles
11-10 The Angular Momentum of a Rigid Body Rotation about a Fixed Axis
11-11 Conservation of Angular Momentum
11-12 Precession of a Gyroscope
Tuesday, February 5, 2013
9 - Usability
9-1 Designing for Human Body Size
9-2 Designing for Human Body Posture
9-3 Designing for Reach and Mobility
9-4 Designing for Human Force and Power
9-5 Designing for Fast and Accurate Control Activation
9-6 Designing Labels and Warnings
9-7 Designing for Vision
9-8 Designing for Material Handling
9-9 Conclusion
9-2 Designing for Human Body Posture
9-3 Designing for Reach and Mobility
9-4 Designing for Human Force and Power
9-5 Designing for Fast and Accurate Control Activation
9-6 Designing Labels and Warnings
9-7 Designing for Vision
9-8 Designing for Material Handling
9-9 Conclusion
Wednesday, January 30, 2013
10 - Safety
10-1 Why Safety
10-2 What is Safety
10-3 Hazard, Risk, and Danger
10-4 Designer's Obligation
10-5 Human Factors/Ergonomics
10-6 Summary
10-2 What is Safety
10-3 Hazard, Risk, and Danger
10-4 Designer's Obligation
10-5 Human Factors/Ergonomics
10-6 Summary
Friday, January 25, 2013
11 - Minizing Engineering Effort
11-1 Introduction
11-2 Reducing The Number of Experiments
11-3 Similitude
11-4 Optimality
11-5 Quadrature
11-6 Cheaking
11-2 Reducing The Number of Experiments
11-3 Similitude
11-4 Optimality
11-5 Quadrature
11-6 Cheaking
Sunday, January 20, 2013
12 - Strength under Static Circumstances
12-1 Permissible Stresses and Strains
12-2 Theory of Static Failure
12-3 Stress Concentration
12-4 Fracture Mechanics
12-5 Non-ferrous Metals
12-6 Stochastic Considerations
12-2 Theory of Static Failure
12-3 Stress Concentration
12-4 Fracture Mechanics
12-5 Non-ferrous Metals
12-6 Stochastic Considerations
Tuesday, January 15, 2013
13 - Strenght under Dynamics Conditions
13-1 Testing Methods and Presentation of Results
13-2 SN Diagram for Sinusoidal and Random Loading
13-3 Fatigue-Strength Modification Factors
13-4 Fluctuating Stress
13-5 Complicated Stress-Variation Patterns
13-6 Strength at Critical Locations
13-7 Combined Loading
13-8 Surface Fatigue
13-2 SN Diagram for Sinusoidal and Random Loading
13-3 Fatigue-Strength Modification Factors
13-4 Fluctuating Stress
13-5 Complicated Stress-Variation Patterns
13-6 Strength at Critical Locations
13-7 Combined Loading
13-8 Surface Fatigue
Thursday, January 10, 2013
14 - Fundamental of Arc Welding
14-1 Definitions and Terminology
14-2 Basic Welding Circuit
14-3 Arc Shielding
14-4 Nature of the Arc
14-5 Overcoming Current Limitations
14-6 Commericial Arc-Welding Processes
14-7 Arc-Welding Consumables
14-8 Design of Welded Joints
14-9 Codes and Specifications for Welds
14-2 Basic Welding Circuit
14-3 Arc Shielding
14-4 Nature of the Arc
14-5 Overcoming Current Limitations
14-6 Commericial Arc-Welding Processes
14-7 Arc-Welding Consumables
14-8 Design of Welded Joints
14-9 Codes and Specifications for Welds
Saturday, January 5, 2013
15 - Instabilities in Beams and Columns
15-1 Euler's Formula
15-2 Effective Length
15-3 Generalization of the Problem
15-4 Modified Buckling Formulas
15-5 Stress-Limiting Criterion
15-6 Beam-Column Analysis
15-7 Approximate Method
15-8 Instability of Beams
15-2 Effective Length
15-3 Generalization of the Problem
15-4 Modified Buckling Formulas
15-5 Stress-Limiting Criterion
15-6 Beam-Column Analysis
15-7 Approximate Method
15-8 Instability of Beams