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807. Identify the tools and procedures needed to test the design features of a prototype. Identify the tools and procedures needed to test the design features of a prototype. Key vocabulary: technology prototype design features flexibility strength hardness.

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807

Identify the tools and procedures needed to test the design features of a prototype.

identify the tools and procedures needed to test the design features of a prototype
Identify the tools and procedures needed to test the design features of a prototype.

Key vocabulary:

technology

prototype

design features

flexibility

strength

hardness

identify the tools and procedures needed to test the design features of a prototype1
Identify the tools and procedures needed to test the design features of a prototype.

Key concepts/skills:

Level 1: Define key vocabulary.

Level 2: Identify tools used to test for strength,

hardness, and flexibility of materials.

Level 3: Describe procedures to test design

features of a prototype.

identify the tools and procedures needed to test the design features of a prototype2
Identify the tools and procedures needed to test the design features of a prototype.
  • Testing a prototype
    • Structure – test the individual parts or sub systems for structural integrity
      • Strength – is the whole prototype and its parts strong enough to withstand normal stresses?
        • compression tests
        • tension tests
        • torque test (twisting forces)
        • many of these are done with computer animated drawings (CAD)
identify the tools and procedures needed to test the design features of a prototype3
Identify the tools and procedures needed to test the design features of a prototype.

2. Durability – how long will the entire prototype withstand normal or prolonged use?

  • repetitive use
  • prolonged use
  • vibration testing
  • accidental stress
  • battery life
identify the tools and procedures needed to test the design features of a prototype4
Identify the tools and procedures needed to test the design features of a prototype.

B. Function – do the parts or entire prototype perform their function?

  • Sub systems - during normal use do all the individual parts do what they are supposed to do?
  • Overall function – do all the subsystems work together properly to perform the intended function

C. Safety – are there any safety issues in the sub systems

or the prototype as a whole

identify the tools and procedures needed to test the design features of a prototype5
Identify the tools and procedures needed to test the design features of a prototype.

II. Measurement

A. What you may measure

  • Volume- graduated cylinder
  • Mass- triple-beam balance
  • density- grad. Cyl. and balance
  • distance/ length- meter stick
  • compression forces- spring scale
  • Weight – spring scale
  • tension forces – spring scale
  • Torque – spring scale
  • Time – stop watch