Prevent Windshield Breakage: Minimizing Temperature Tolerance in mm

  • Context: Undergrad 
  • Thread starter Thread starter tdusffx
  • Start date Start date
  • Tags Tags
    Temperature
Click For Summary
SUMMARY

The discussion focuses on calculating the minimum tolerance required to prevent windshield breakage due to temperature changes of 200°F. The linear expansion coefficient of glass is specified as 9×10-6 (°C)-1. The area expansion formula is referenced, but the participants express confusion regarding the application of this formula to determine the necessary margin between the glass and the frame. The key takeaway is that understanding the linear expansion of materials is crucial for automotive design to prevent structural failures.

PREREQUISITES
  • Understanding of linear expansion coefficients
  • Familiarity with the area expansion formula
  • Basic knowledge of temperature conversion (°F to °C)
  • Concept of material tolerances in engineering
NEXT STEPS
  • Research the application of linear expansion coefficients in engineering materials
  • Learn how to convert temperature changes from Fahrenheit to Celsius
  • Explore the area expansion formula in detail
  • Investigate automotive design standards for windshield tolerances
USEFUL FOR

Engineers, automotive designers, and students studying material science who are interested in understanding the effects of temperature on material integrity and structural design.

tdusffx
Messages
58
Reaction score
0
An automobile windshield has dimensions of 60 cm by 150 cm. What minimum tolerance in mm is needed to prevent the windshield from breaking if the temperature changes by 200°F? (The linear expansion coefficient of glass is 9×10-6 (oC)-1.)

I thought of using the area expansion formula but when the problems asked for the 'minimum tolerance in mm' then I have no idea...

A = yL*(tf-ti)

y = 2*9x10^-6

I don't know what to do after this
 
Physics news on Phys.org
You should think about moving this to homework.

My understanding of the expression "min. tolerance in mm" is the width of the margin between the glass and the frame that is necessary to prevent the glass forcing against the frame due to expansion.
 

Similar threads

Calculating linear expansion of windshield 60cm*150cm
  • · Replies 1 ·
Replies
1
Views
3K
How Much Tolerance is Needed for a Windshield to Withstand a 200°F Temperature Change?
  • · Replies 1 ·
Replies
1
Views
3K
Linear Expansion related to area expansion
  • · Replies 4 ·
Replies
4
Views
9K
Linear expansion coefficient of glass
  • · Replies 8 ·
Replies
8
Views
9K