Claim OwnershipCellular Solids: Structure, Properties and Applications
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© http://ocw.mit.edu; Creative Commons Attribution-NonCommercial-ShareAlike 4.0; http://ocw.mit.edu/terms; Album art drawing by Robert Hooke. Image is in the public domain.
Description
This course reviews the structure and mechanical behavior of honeycombs and foams and applies models for their behavior to applications in engineering and medicine and to natural materials.
25 Episodes
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Some unique aspects of the course, particularly the focus on materials in nature, and projects on bamboo and cork are discussed.
Logistics of the assigned student projects, faculty feedback and support of students' work, and challenges that the students encounter are discussed.
Lorna Gibson discusses how she prepares her lectures, as well as some of the extra things she likes to include.
Professor Gibson discusses the importance of images in the study of cellular materials in the course.
Student project examples are discussed by Professor Gibson in this video clip.
Professor Lorna Gibson introduces herself, the course, and talks about her background and how she became interested in engineering.
Review of materials with biomimicking, and final exam review.
Discussion of sandwich panels continues with natural sandwich structures and density gradients.
This session introduces sandwich panels, stress, strain, failure modes and optimum design.
This session covers more on energy absorption of foams, and continues with modeling, concluding with a discussion of bicycle helmets and woodpeckers.
This session covers scaffold interactions, degradation, cell adhesion, wound and scar formation, and energy absorption mechanics.
This session covers cell-scaffold interaction, degradation, cell attachment, morphology, contractility, migration and differentiation.
This session covers fabrication, microstructure and mechanical properties of osteochondral scaffold.
This session continues on osteoporosis and covers bone structure related to evolution.
This session covers bone and trabecular bone, and begins discussing osteoporosis.
Professor Gibson takes questions from students in order to review concepts that will be covered on the midterm exam.
Thermal properties and behaviors of foams is covered in this session.
This session begins with a viewing of video on Hooke's Micrographia, then covers compressive strength and fracture toughness of foams.
This session begins with a look at cork as a natural honeycomb structure, and covers properties of foams and some modeling.
This session covers wood structure, micro-structure, stress-strain, honeycomb models, and bending.
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