A bar of soda-lime glass is heated to 100°C and then clamped…
A bar of soda-lime glass is heated to 100°C and then clamped between two rigid supports. The glass is cooled to room temperature (20°C). A flaw 40 μm{“version”:”1.1″,”math”:”μm”} (2a=40 μm{“version”:”1.1″,”math”:”μm”}, a=20 μm{“version”:”1.1″,”math”:”μm”}) in length lies within the glass bar. Showing your work and answer on the Final Exam Template, calculate the strength of the glass bar given the fracture toughness and the flaw size. Assume Y=1 for this fracture geometry. Data for Soda Lime Glass Coefficient of Thermal Expansion 9*10-6/°C Young’s modulus 70 GPa Poisson Ratio 0.24 Fracture Toughness 0.70 MPa√m