The glass materials are popularly utilized for making packaging products such as glass containers and bottles. This type of products are usually demanded by industries where the packaging material is supposed to be non-reactive in nature. The pharma industry, chemical manufacturing unit, processed food manufacturing plant, etc. are some of the verticals where this type of containers are required.
Glass material are brittle in its nature and due to the issue of internal strain, it is possible that they might show volatility in its behaviour. The glass bottles that are poor in quality may get damaged and breakdown without any external force applied and such damages can retain in itself for long without any sound of cracking. This is something which cannot be predicted. In order to get rid of such product failures, the packing material must be tested prior the production process using a Polariscope strain viewer for glass.
Strain Inspection of Glass material
The quality assurance program is not complete without an efficient testing procedure. Some common defects are ridges and furrows in glass material. These are some flaws which are detected easily with naked human eyes. These flaws are detected under the category of external defects. There are also some internal strains and stress that are produced because of the inefficient manufacturing process. These are air bubbles, uneven thickness, and many more.
The other reason for establishing flaw detection system is the constant contraction and expansion occurring the glass material because of the modifying environmental conditions. When glass items are transported to overseas locations, they experience a sudden change from extremely cold region to extremely hot region, this experience might lead them to produce thermal shocks leading to damages.