Compression Molding: SMC and TMC
18 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What type of material system is utilized in the injection molding process?

  • Molding compounds in pellet form (correct)
  • Prepreg systems
  • Wet resin systems
  • Continuous fibers

    • What is a common application of prepreg systems?

  • Aerospace components
  • Golf club shafts (correct)
  • Building construction
  • Automotive parts

    • What is a type of molding compound?

  • Thermoplastic resin
  • Sheet Molding Compound (correct)
  • Bulk Molding Compound
  • Thermoset resin

    • What manufacturing process is often used with molding compounds?

    <p>Compression molding (A)</p> Signup and view all the answers

    What is a characteristic of molding compounds used in injection molding?

    <p>They are in a pellet form (B)</p> Signup and view all the answers

    What is a common application of composite materials?

    <p>Golf club shafts (C)</p> Signup and view all the answers

    What is the typical range of process cycle time for compression molding?

    <p>1 to 4 min (D)</p> Signup and view all the answers

    What is a characteristic of Thick Molding Compound (TMC) fibers?

    <p>Random distribution in three dimensions (C)</p> Signup and view all the answers

    What is the primary advantage of using Thick Molding Compound (TMC) over Sheet Molding Compound (SMC)?

    <p>Elimination of multiple SMC plies (C)</p> Signup and view all the answers

    What is the typical fiber volume fraction in Bulk Molding Compound (BMC) or Dough Molding Compound (DMC)?

    <p>15 to 20% (C)</p> Signup and view all the answers

    Which type of reinforcement can be used in injection moldable compounds?

    <p>Glass, carbon, and aramid fibers (C)</p> Signup and view all the answers

    What is a characteristic of Bulk Molding Compound (BMC) or Dough Molding Compound (DMC) composites?

    <p>Lower mechanical properties than SMC composites (B)</p> Signup and view all the answers

    What is a major disadvantage of prepreg materials?

    <p>Higher cost (D)</p> Signup and view all the answers

    What is the primary resin used in Sheet Molding Compound (SMC)?

    <p>Polyester or vinylester (C)</p> Signup and view all the answers

    What is the maximum thickness of Sheet Molding Compound (SMC)?

    <p>6 mm (B)</p> Signup and view all the answers

    What is the purpose of applying a prepreg to the surface of an aerospace composite?

    <p>To improve its properties (C)</p> Signup and view all the answers

    What is the process used to mold SMC?

    <p>Compression molding (B)</p> Signup and view all the answers

    What percentage of short glass fibers is typically contained in SMC?

    <p>30% by weight (B)</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser