Presenter Information

Eric Jensen, University of Wyoming

Department

Department of Mechanical Engineering

First Advisor

Dr. David Walrath

Description

S2 - Glass/Epoxy is used in many applications including passenger and landing gear doors of many commercial aircraft, as well as, much of the interior of today’s hel icopters. However, little is known about the creep behavior of this particular fiberglass - epoxy combination. To gain a better understanding of how S2 - Glass/Epoxy reacts to a constant load for an extended period of time tensile creep tests were conducted. Eleven 0 ̊ , unidirectional, test specimens of prepregnated S2 - Glass/Epoxy were constructed and tabbed. Precision foil resistance strain gages were then adhered to these specimens. The specimens were then subjected to 20%, 40%, and 60% of the static stres s to rupture, at room temperature and 100 ̊ F. The load was applied for five hours and then removed and the specimen was allowed to relax and recover. The next stress was then applied. Strain, load, and time data were recorded. The Time - Temperature superp osition principle was applied to this data to extend the testing time and a master creep strain plot was developed.

Comments

Oral Presentation, Wyoming NSF EPSCoR

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Creep Behavior of S2 - Glass/E poxy

S2 - Glass/Epoxy is used in many applications including passenger and landing gear doors of many commercial aircraft, as well as, much of the interior of today’s hel icopters. However, little is known about the creep behavior of this particular fiberglass - epoxy combination. To gain a better understanding of how S2 - Glass/Epoxy reacts to a constant load for an extended period of time tensile creep tests were conducted. Eleven 0 ̊ , unidirectional, test specimens of prepregnated S2 - Glass/Epoxy were constructed and tabbed. Precision foil resistance strain gages were then adhered to these specimens. The specimens were then subjected to 20%, 40%, and 60% of the static stres s to rupture, at room temperature and 100 ̊ F. The load was applied for five hours and then removed and the specimen was allowed to relax and recover. The next stress was then applied. Strain, load, and time data were recorded. The Time - Temperature superp osition principle was applied to this data to extend the testing time and a master creep strain plot was developed.