1 Day
I.D.#85008
The understanding of brittle behavior is a prerequisite to efficient
product design with glass, glass-ceramic, and ceramic-type materials.
This short course will address the weakness of brittle materials and
how it may be overcome; it will highlight the design principles for
brittle materials and contrast them with those for ductile materials.
The seminar will review the design tools, e.g. stress analysis, finite
element analysis, photo-elastic methods, and experimental stress
analysis, and illustrate how they may be applied to automotive, aircraft
and consumer products. Formulas for mechanical stresses due to
bending, twisting, and impact loads in beams, plates and tubes will
be reviewed. Similarly, thermal stresses in above structures due to
transient and steady state temperature changes will be estimated
using simple equations. The role of fracture mechanics and failure
analysis will be discussed from the point of view of product liability.
Hands-on demonstration of glass failure and examination of fracture
surface will be carried out in the classroom. Glass specimens with
different surface abrasions will be fractured to illustrate the impact
of flaw severity on long-term reliability. The fundamentals of glass
behavior under mechanical and thermal loads will be emphasized.
In particular, the strength and fracture properties of glass, glassceramics,
and ceramics will be reviewed. Also discussed will be
available commercial techniques for improving strength and fracture
properties to make glass more attractive as a structural material. This
will be followed by a review of design methodology and its application
to glass and ceramic products in automotive, aircraft, space,
consumer, and construction industries. The issue of product liability
involving glass products and how to minimize it via product design will
be addressed.
Learning Objectives
By attending this seminar, you will be able to:
Explain why glass as a structural material behaves differently than
metals or plastics and how such differences affect product design
Design glass components or structures that have adequate safety
built into them to meet reliability requirements in the field
Examine fracture origin and estimate failure stress from mirror size
Improve design strength of glass articles by three times or more
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