basics of modelling and testing

1. ENGINEERING EXPLORATION –
22IT150
Modelling, Testing and Final Outputs
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2. Engineering Design Process
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1. Problem Definition
2. Idea Generation
3. Solution Creation
4. Testing / Analysis
5. Final Solution or Output
6. Design Improvement

3. Testing / Analysis
• Modelling
• Predictive Analysis
• Testing
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4. Various Modelling
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Modelling
Mathematical Physical Computer

5. Modelling - Mathematical
• Uses mathematical formulas and problems to predict the
results of design
• Examples
– Current through the resistor
– 𝑉 = 𝐼 ∗ 𝑅
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6. 6

7. Modelling - Physical
• 3-D replicas of the final design of a solution
• Used to illustrate the design, test the design, or experiment
with materials
• Falls under 2 categories
– Mock-up
– Prototype
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8. Modelling - Physical
• Mock-up
– Either full size or scaled do increase or decrease the size of the
object
– Usually created with paper, cardboard, foamboard
– Used to simulate the appearance of the final product
– Not a working model
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9. Modelling - Physical
• Mock-up
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10. Modelling - Physical
• Prototype
– Used to simulate the function of the final product
– A working model using rapid prototyping
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11. Predictive Analysis
• Predict the future events using factors such as
– Statistics & Probability
– Models
– Mathematical & scientific principles
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12. Testing
• To determine the usefulness of the product
• Criteria for testing
– Function
– Fit
– Aesthetics
– Safety
– Environmental Impact
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13. Testing – Criteria
• Function
– Test the working of the product
– Whether the product solves the problem of concern ?
– Does the product meet the minimum requirements ?
– Will the design / product withstand daily use ?
– Etc.……
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14. Testing – Criteria
• Fit
– Whether the product works with production and customer needs ?
• Eg: Inability to place the power switch in the specific location in the mobile phone
• Aesthetics
– Visually appealing
– Will consumers purchase the product based on its appearance ?
– Size, color, few others
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15. Testing – Criteria
• Safety
– Safe to produce ?
– Safe for customers to use ?
– Electrical hazards, chocking hazards
– Met government regulations ?
• Environmental Impact
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16. Testing – Criteria
• Environmental Impact
– Product disposal method
– Product’s ecological footprint
– Potential risks if the product malfunctions
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17. Final Outputs
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Output of the
design process
Final Project
Report
Oral
Presentation
Production
Documents

18. Final Outputs - Final Project Report
• Summarizes the design process for management and potential customers
• Content of Final Project Report
– Title, Lead Engineer’s information, design team
– Problem Statement (Both Technical & Non-Technical)
– Design Goals
– Alternate Design (which is not used)
– Strength & weakness of the product
– Tradeoffs
– Product assembly & manufacturing information
– Summary of testing information
– Information about function, fit, aesthetics, safety & environmental impacts
– Final design through detailed drawings, mathematical models and prototypes
– Maintenance and expected life of the product
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19. Final Outputs - Oral Presentation
• Spoken delivery of a report to an audience
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20. Final Outputs - Production Documents
• Final drawings with appropriate dimensions and information to
produce the product
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21. Design Improvements
• Final step in the design process
• THERE IS ALWAYS A SCOPE FOR IMPROVEMENT
• Improvements based on feedback from design team,
management team, production team and CUSTOMERS
• Reverse Engineering can be used
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22. Engineering Design Process
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1. Problem Definition
2. Idea Generation
3. Solution Creation
4. Testing / Analysis
5. Final Solution or Output
6. Design Improvement