Materials and manufacturing Overzicht college slides + quiz vragen en antwoorden
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Course
Materials & Manurfacturing (IOB4T122)
Institution
Technische Universiteit Delft (TU Delft)
Overzicht van alle college van M&M + quizvragen met antwoorden. Let op! 1 klein deel van 1 college ontbreekt, namelijk hoe je met solidworks werkt. Geschreven in combinatie van Nederlands en Engels (soms staan beide bij de uitleg). Collegeslides zijn in het Engels.
,Week 1 college 1
Why bio-based material?
Is a material derived from the living organism like feedstock including corn, sugarcane, organic
polymers which can be degraded (afgebroken) in the environment in one year!
Bio based = geeft de hernieuwbare oorsprong aan van de koolstofbron die wordt gebruikt voor de
productie van het plastic.
Biodegradable = wijst op een potentieel afbraakmechanisme aan het einde van de levensduur, dat
geen verband houdt met de koolstofbron. Biodegradable kunststoffen kunnen zowel uit fossiele
brandstoffen als uit groene bronnen worden gemaakt.
Tetrahedron:
2
,Week 2 College 1 composites
Natural fiber composites
Natural fibers
- Bamboo, coconut, jute, hemp, grass, sisal fibers
- Natural fibers composites (NFC) are applied in automotive industry (e.g. dashboards) as
renewable resources.
- Major problems are the fiber quality and sensitivity to humidity
What are composites?
Composite means: made up of several parts
- Composites are a combination of 2 or more materials
- Usually stiff reinforcement and a binder material (matrix)
De vezels zorgen voor het overbrengen van de trekkrachten
Matrix (vaak een kunststof) houdt de vezels samen en zorgt voor het overbrengen van drukkrachten
en schuifspanningen.
Relevance of design:
- Properties are better than original materials: 1+1=3
- Properties can be fine-tuned in different directions
Whay using compsites?
Traditional composites (glass or carbon fiber laminates)
- High strength and stiffness (stijfheid/ mate waarin object weerstand bidet aan vervorming als
reactie op een uitgeoefende kracht).
- Low weight
- Tailored design
- Good fatigue life
- High dimentional stabilty
- Good corrosion resistance
Natural material composites (focus of this course)
- Reduction of material waste streams
- More sustainable products
3
, - Possibility to make biodegradable or edible products
- Product has better properties than its components.
Composite terminology
Classification of composite materials
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4
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