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Engineering  |  FURI
FURI Spring 2020
Sustainability

Fracture Propagation in Glassy Polymers Due to Temperature Differentials

The objective of this project is to determine how fracture behavior in glassy materials changes when there is a temperature gradient across the width of a crack front. Initially, dynamical mechanical testing was conducted to find the glass transition temperature of polymethyl methacrylate (PMMA) samples. Next, a temperature fixture was created to enclose fracture specimens between heating and cooling elements to achieve the desired temperature gradient. Fracture tests were then performed at varying temperatures approaching Tg using a test matrix designed to identify at which temperature gradient the fracture transitions from a brittle to a rubbery response. 

Anirudh Ranganathan

Cave Creek, Arizona, United States

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