POLARISCOPE (1)
                     POLARISCOPE
A polariscope is an electronic tool that 
detects internal stress in transparent 
materials like glass and plastic. Polarized 
lights show stress patterns that could lead to 
cracks or breaking. This helps manufacturers 
improve product safety, durability, and 
quality during testing and manufacturing 
processes. 
ADAVANTAGES OF POLARICOPE
1 2 3
Non-Destructive Early Stress Easy Visual 
Testing Detection Analysis
Allows stress testing Identifies internal stress Shows stress as clear 
without damaging patterns before cracks color patterns, making 
glass or plastic or breakage occur in interpretation simple 
products during production or storage for operators.
quality checks.
KEY COMPONENTS OF A 
POLARISCOPE
Control Unit
Adjusts the level of light and operating conditions to 
provide correct stress measurement.
Viewing screen/eyepiece
Displays colored stress patterns or borders for simple 
viewing and judgment.
Analyzer
Positioned after the sample, it detects changes in 
polarized light resulting from internal stress.
Polarizer
Normal light is converted into polarized light before 
passing through the test sample.
CONCLUSION
A polariscope is a valuable tool for detecting 
internal stress in transparent materials like 
glass and plastics. It helps in the prevention 
of breakage, improves product longevity, and 
maintains safety standards by revealing 
hidden stress patterns. Its harmless testing 
procedure makes it useful for routine quality 
control in modern manufacturing 
environments. 
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