Lab Study Guide - Final Review Lab 1. Understand how...

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Final Review – Lab 1. Understand how stress-strain properties (breaking load, tenacity, strain, initial modulus, work of rupture, yield stress, yield strain) are measured and expressed a. Breaking load: the specific stress in which a sample breaks b. Breaking tenacity: the maximum stress that a fiber can bear Breaking Ê Tenacity = Βρεακινγ Λοαδ τεξ c. Breaking strain: the point in which the fiber breaks d. Initial modulus: ratio of stress to strain in the initial straight-line part of the curve e. Work of rupture: the energy required to rupture the material found by calculating the area under the curve f. Yield stress: the load at which a material begins to deform plastically g. Yield strain: the elongation at which a material begins to deform plastically 2. Understand how elastic properties are measured and expressed a. Percent elastic recovery: the elasticity that remains after stretching a material a certain distance Elastic Ê Recovery = Ελαστιχ Εξτενσιον Τοταλ b. The more a material is stretched, the lower the elastic recovery because the bonds begin to permanently deform 3. Understand how creep and stress relaxation properties (time dependent mechanical
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This note was uploaded on 09/12/2011 for the course PTFE 2200 taught by Professor Kumar during the Fall '10 term at Georgia Institute of Technology.

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Lab Study Guide - Final Review Lab 1. Understand how...

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