1. Testing Procedures

2. Does your solution solve the problem? Design Process Presentation Name
Course Name
Unit # – Lesson #.# – Lesson Name
Design Process
Does your
solution
solve
the problem?
Let’s take a look at where we are in the product development process.
[click] You’ve completed your prototype. Now it’s time to test how well your solution meets your design criterial.

3. Rule of Thirds Research and Exploration Design and Construction
Prototypes
Engineering Design and Development
Lesson 4.1 Plan for the Prototype
Rule of Thirds
Research and Exploration
Design and Construction
Testing, Documentation, and Presentation
Problem Selection
Design Specification
Testing Criteria & Method
Topic Background
Decision Matrix
Testing Procedure
Problem Statement
Concept Testing
Physical Testing
Statement of Purpose
Design Proposal
Record Data
Cited Validation
Gantt Chart (timeline)
Critical Design Review
Cited Justification
Sketching Refinement
Redesign and Refine
Past & Present Solutions
Technical Drawing
Re-test
Market Research
Material List
Determine Conclusion
Problem Proposal
Cost
Multimedia Display
Tool Selection
Web Page
Tool Safety
Research Paper
Mock Up & Modeling
Electronic Portfolio
Prototype Construction
Testing Criteria & Method
At this point, you are beginning the final third of your project. [click] Testing will determine how well you have solved your problem and guide you in making improvements to better meet the design criteria. But before you begin the testing phase, you must carefully plan your approach.

4. TESTING PROCEDURES Discussion Questions What is a test? Purpose
Quantitative vs Qualitative
Before you Begin
Establish Criteria
Documentation
Bias
Procedure
Important Questions
Thanks and Acknowledgement

5. What does a test look like?
Testing Procedures
Engineering Design and Development
Lesson 5.1 Plan the Test Phase
DISCUSSION QUESTIONS
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Why do you test?
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[Ask students why a design should be tested?] Why not just mass produce the design and save the money that would be spent on testing?
What does a test look like? What must be true in order for the test to safely provide reliable and valuable information?
What does a test look like?

6. Testing Procedures
Engineering Design and Development
Lesson 5.1 Plan the Test Phase
WHAT IS A TEST?
An examination, evaluation, observation, or trial used to determine and document capabilities, characteristics, effectiveness, reliability and/or suitability of a material, product, or system
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7. Testing Procedures
Engineering Design and Development
Lesson 5.1 Plan the Test Phase
PURPOSE
What do you need to know in order to ensure the successful performance of your design?
What will the test determine?
You already have a set of specifications that describe exactly what your product should be able to do in order to perform successfully. Revisit these specifications.
What should you test to ensure that your product will meet all of the criteria? You may have to test more than one thing.
In the test shown here, EDD students are measuring the torque produced by their Utili-tool design using a torque meter. The Utili-tool was designed to dislodge snow and ice from the chute of a snow blower.

8. QUANTITATIVE VS QUALITATIVE DATA
Testing Procedures
Engineering Design and Development
Lesson 5.1 Plan the Test Phase
QUANTITATIVE VS QUALITATIVE DATA
Quantitative
Data that can be measured
Numerical value
Qualitative
Data that can not be measured
Describes a quality or categorization
Pass-fail, yes-no, or categorical
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What type of data is needed from each test?
Quantitative data can be measured and is represented by numerical values. For example, the viscosity of a fluid might be measured with a viscometer such that the measurement is represented by a numerical value.
Qualitative data describes a quality or categorization. For example, determining whether a design is aesthetically attractive to the target market may require a consumer survey in which the respondents are asked if they like the look of the product. The yes-no answers is considered qualitative data.
[click] Or, asking respondents to rate the quality of a speaker or headphones is considered qualitative data.

9. MATERIALS List everything you THINK you will possibly need
Testing Procedures
Engineering Design and Development
Lesson 5.1 Plan the Test Phase
MATERIALS
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List everything you THINK you will possibly need
Remember – someone else should be able to duplicate the test with this list
On site concrete test

10. Testing Procedures
Engineering Design and Development
Lesson 5.1 Plan the Test Phase
BEFORE YOU BEGIN
List the initial conditions that either MUST exist or WILL exist at the start of the test
Identify all potential hazards
Identify what safety precautions will be in place to address the potential hazards
Identify the safety controls you have in place before the test begins
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Gloves being tested under high water pressure.

11. BEFORE YOU BEGIN Identify WHO is responsible for WHAT – write it down
Testing Procedures
Engineering Design and Development
Lesson 5.1 Plan the Test Phase
BEFORE YOU BEGIN
Identify WHO is responsible for WHAT – write it down
Does anyone of authority need to sign off before you set up your test?
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Pressure chamber with instrumentation

12. ESTABLISH CRITERIA How will you know if your test is successful?
Testing Procedures
Engineering Design and Development
Lesson 5.1 Plan the Test Phase
ESTABLISH CRITERIA
How will you know if your test is successful?
Does your test pass or fail?
Have you established a benchmark?
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Gloves being tested under high water pressure.

13. DOCUMENTATION How will you record your results?
Testing Procedures
Engineering Design and Development
Lesson 5.1 Plan the Test Phase
DOCUMENTATION
How will you record your results?
What scientific or mathematic principles are you using?
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Bias is a prejudice for a particular point of view.
Cognitive Bias - In some cases bias can be attributed to a prejudice of the observer toward a particular point of view due to life, loyalty and local concerns.
Confirmation Bias - In other cases, bias can arise when decision makers attribute more significance to positive results than negative results in a conscious or unconscious effort to confirm a claim.
Selection Bias – Sometimes pertinent data is not collected or discarded in order to produce positive results.
Be sure that your test design is not can not only show that your design meets the specification or performs as intended, but that it will also indicate a failure if your design does not meet the specification

14. BIAS Have you eliminated any bias or subjectivity?
Testing Procedures
Engineering Design and Development
Lesson 5.1 Plan the Test Phase
BIAS
Have you eliminated any bias or subjectivity?
Cognitive bias – observer effects that arise from various life, loyalty and local concerns
Confirmation bias –more weight placed on evidence that confirms claims than on evidence that refutes claims
Selection bias – samples are intentionally (not randomly) selected to produce positive results
Bias is a prejudice for a particular point of view.
Cognitive Bias - In some cases bias can be attributed to a prejudice of the observer toward a particular point of view due to life, loyalty and local concerns.
Confirmation Bias - In other cases, bias can arise when decision makers attribute more significance to positive results than negative results in a conscious or unconscious effort to confirm a claim.
Selection Bias – Sometimes pertinent data is not collected or discarded in order to produce positive results.
Be sure that your test design is not can not only show that your design meets the specification or performs as intended, but that it will also indicate a failure if your design does not meet the specification
©istock.com

15. PROCEDURE Have all initial conditions been met?
Have all safety conditions been met?
Are all personnel in place?
List every step in painstakingly minute detail - think “science lab”
Anybody should be able to reproduce your test and results

16. IMPORTANT QUESTIONS Will the test verify and validate the design?
Is the test designed to show that the product meets specifications or that it fulfills its intended purpose?
Is the test valid?
Does the test measure what it is designed to measure?
Is the test reliable?
Does the test procedure give consistent results each time it is run? Is it repeatable?
Will the test produce accurate measurements?
Are the data measurements close to the actual value of the quantity being measured?

17. THANKS AND ACKNOWLEDGEMENT
Be sure to thank those who helped for their cooperation or assistance?
Thank you notes/letters are appreciated because those can be displayed at places of business

18. TESTING PROCEDURES Discussion Questions What is a test? Purpose
Quantitative vs Qualitative
Before you Begin
Establish Criteria
Documentation
Bias
Procedure
Important Questions
Thanks and Acknowledgement