Testing

• What is the focus of the unit 1.1 Materials and applications?

  Materials testing
• What should you develop by the end of unit 1.1?

  A knowledge and understanding of materials testing
• What are the two main categories of tests for mechanical properties?

  Simple workshop tests and scientific measured tests
• Why must results from material tests be comparable?

  To ensure that all possible variables are removed
• What are some variables that can affect material testing results?

  Environmental conditions, size of material sample, and testing equipment
• What is the purpose of tensile testing?

  To measure the yield or stretch of a material
• How is toughness tested using the Izod impact test?

  A notched piece of material is hit by a pendulum, and energy absorbed is measured
• What are the three common tests for hardness?

  Rockwell, Brinell, and Vickers pyramid tests
• How does the Rockwell hardness test work?

  A preload is applied with a diamond indenter, followed by an additional load
• What does the Brinell hardness test measure?

  The diameter of the indent made by a steel ball under a pre-set load
• What is the Vickers pyramid test used for?

  To test very hard materials using a diamond pyramid indenter
• What does a bend test determine about a material?

  How well a material can withstand cracking during bending
• What indicates a material's ductility during a bend test?

  Cracks on the outer bend
• What indicates a material's malleability during a bend test?

  Cracks on the inside of the bend
• What is non-destructive testing (NDT) used for?

  To detect internal defects in products without damaging them
• What is the method of ultrasonic testing?

  A transducer generates sound waves pulsed into the material
• How does X-ray testing work?

  An X-ray beam passes through the material to project an image
• What is the four-point probe method used for?

  To determine the electrical conductivity of materials
• How is thermal conductivity measured?

  By measuring heat flow through a material between temperature-controlled plates
• How is tensile testing performed in a workshop?

  By placing a weight on a length of material held in a clamp
• What does toughness testing in a workshop involve?

  Hitting the test material with a hammer while it is in a vice
• How is hardness tested in a workshop?

  By running a file over the surface and measuring scratches
• What does a dot punch test measure?

  The size of the surface indentation made by a hammer blow
• How is malleability and ductility tested in a workshop?

  By attempting to bend a test piece to 90 degrees
• How is corrosion testing performed?

  By exposing the material to environmental effects and inspecting for corrosion
• How is electrical conductivity tested using a multimeter?

  By measuring resistance with probes attached at a set distance
• How is thermal conductivity measured with a thermometer?

  By placing a thermometer a set distance from one end of the material heated by a Bunsen burner
• What mechanical properties are covered in this unit?

  Tensile strength, hardness, toughness, malleability, ductility, and conductivity
• What is the Izod test used for?

  To test toughness
• What are the industrial tests corresponding to hardness tests?

  Rockwell, Brinell, and Vickers pyramid tests
• What is the significance of non-destructive tests (NDT)?

  They do not damage the material being tested
• How many categories of materials are covered in the syllabus?

  Seven categories
• What should you be familiar with regarding materials in the syllabus?

  Common applications for each specific material
• What are the ten categories of materials mentioned?

  Smart materials, metals, woods, modern materials, polymers, glass, paper and board, ceramics, composites, textiles
• What should you do with diagrams in this unit?

  Attempt to replicate them in a simple and easy to understand way
• What should you complete for the next lesson?

  Q5 from AQA PROD3 2016
• What will be discussed in the next lesson?

  Enhancement of materials
• Why is it important to avoid generic terms like 'wood' or 'metal' in answers?

  To ensure specificity in material identification
• What is the purpose of revision notes in this unit?

  To remind you of mechanical forces and related strengths
• What is the significance of the mechanical properties covered in previous units?

  They provide a foundation for understanding material testing