SP12e) You are going to be the technical support for a YouTube video. You want to place some soda-lime window glass
in a furnace, heat it up to a uniform temperature, then take it out and quench the glass in a pool of water at 25°C and
watch it crack and explode. What is the minimum furnace temperature we will require to do this stunt? What would be the
minimum furnace temperature if we actually tested borosilicate (Pyrex) glass?
(Thermal shock question, Equation 17.9, page 703)
Soda-lime glass - E = 69 GPa, UTS = 50 MPa, $\alpha$ = $9 \times 10^{-6}$ (°C), k = 1.7 W/m-k
Pyrex glass - E = 70 GPa, UTS = 50 MPa, $\alpha$ = $3.3 \times 10^{-6}$ (°C), k = 1.4 W/m-k
Soda-lime glass min. furnace temperature = _______ °C.
Pyrex glass min. furnace temperature = _______ °C