5.1 Introduction
Learning Objectives:
1)Introduce to macromechanics of a laminate
Review Chapter 2 before moving to Chapter 4 and 5 as it is critical to understand the rest of the course. Cannot emphasize it enough.
- Do you know how to relate stress and strain for unidirectional lamina?
- Do you know how to relate stress and strain for angle lamina?
- Do you know how to go back and forth between global and local stresses?
- Do you know how to go back and forth between global and local strains?
- Do you know how to calculate elastic moduli of angle lamina?
- Do you know how to calculate coefficient of thermal expansion for an angle lamina?
- Do you know how to calculate coefficient of moisture expansion for an angle lamina?
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5.2 Special Cases of Laminates
Learning Objectives:
1) Identify special case of laminates
2) Ability to give examples of special cases of laminates
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5.3 Failure Criterion for Laminate
Learning Objectives: Establish the failure criteria for laminates based on failure of individual lamina in a laminate.
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5.4 Design of a Laminate
Learning Objectives:
1) Design laminated structures such as plates
2) Design laminated structures such as thin pressure vessels
3) Design laminated structures such as drive shafts
4) Design laminated structures including hygrothermal loads.
Videos
Title: Let’s talk about composite drive shafts
Learning Objectives: Enumerating advantages of composite drive shafts.
Summary: This short video gives you a glimpse of composite drive shafts.
Title: How It’s Made: Carbon Fiber Driveshafts
Learning Objectives: Enumerating aspects that go into making drive shafts out of composite materials.
Summary: This video takes viewers on a tour of a carbon fiber driveshaft manufacturing facility. The process begins with engineering and design, then moves to the winding process where fibers are precisely laid onto a mandrel. The driveshaft is then cured in a custom oven and inspected for quality before being assembled and tested. Finally, the driveshaft is balanced and packaged for shipping.
Title: Composite vs Steel Drive Shaft
Learning Objectives: Compare the failure loads and mechanism of drive shafts made of steel and composite materials.
Summary: Steel are worldwide material. It used in many engineering application because its strength. How if we compare the “worldwide material” with fiber carbon in strength, especially in torsional stress ? Which one is the winner??
Title: What we didn’t know about penis anatomy
Learning Objectives: Relate how mechanical design of composites is related to biology
Summary: We’re not done with anatomy. We know a tremendous amount about genomics, proteomics and cell biology, but as Diane Kelly makes clear at TEDMED, there are basic facts about the human body we’re still learning. Case in point: How does the mammalian erection work?
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5.5 Other Mechanical Design Issues
Learning Objectives:
1) Find the coefficients of moisture expansion of a laminate based on elastic moduli, coefficients of thermal and moisture expansion of individual laminae, and stacking sequence.
2) Find the coefficients of thermal expansion of a laminate based on elastic moduli, coefficients of thermal and moisture expansion of individual laminae, and stacking sequence.
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Thermal load on a laminate
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