Glass Fracture and Failure

This course is designed for those who have to investigate the causes of glass failure in their products or who are charged with designing and specifying glass products to ensure that they are fit for purpose.

The course is very practical in nature and theoretical knowledge is reinforced by practical real life examples of failed products. The course will give delegates the background to begin identifying the causes of glass failure and teach them what steps are required to positively identify why a failure occurred and how it might be prevented in the future.

Introduction to Fracture Analysis

• loss in strength - defects/damage
• maintaining strength
• glass breakage law
• tension stress and origin

Origins of fractures

• Defects
• stress concentrations
• damage
• manufacturing defects

Breakage patterns

• overview of main breakage patterns
• thermal breakage patterns
• pressure breakage patterns
• impact breakage patterns

Fracture markings

• direction of travel
• techniques
• ripple marks
• mirrir grey hackle sequence
• feathering
• dwell marks

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