JavaScript is currently disabled.Please enable it for a better experience of Jumi.


Material Type Glass Testing Applications Glass Strength Bend Test Equipment

Glass Strength Bend Test Equipment

http://www.testresources.net/media/reviews/photos/thumbnail/300x300s/b5/6b/4e/4pt-glass-deflectometer.jpg
Glass Bend Strength Test Equipment Setup
Glass Bend Strength Test Fixture (Pair)
Glass Bend Strength Test Fixture (Single)

Glass is difficult to grip so glass strength is measured in flexure or bending. Modulus of rupture, or MOR, is normally associated with glass strength and calculated to be the is maximum surface stress in a flexed beam at point of failure. In tensile tests, all flaws see the maximum stress so MOR or modulus of rupture is larger by 30% because the volume subjected to maximum stress is small, and the probability of a large flaw in the highly stressed region is also small. Glass strength testers are set up to test brittle materials. The most common test standard, or testing method or norma for glass strength is ASTM C158 which calculates modulus of rupture. Testing for glass strength and modulus of rupture typically involves using a large surface area and precluding edge effects which C158 attempts to do.

ASTM C158 uses flexure strength to calculate modulus of Rupture of glass as it minimizes breaks that originate at the edge. Other glass strength tests minimize edge effects by testing for equibiaxial strength such as ASTM F394 or ASTM C1499. Non-strengthened glass materials have relatively low tensile strength yet high compressive strength, and so most glass breakage is due to tensile stress failure. The most common glass strengthtesting standards for glass is ASTM C 158. It measures modulus of rupture and recommends that the ratio of the width to thickness of standard MOR specimens be between 2:1 and 10:1.

Glass Strength Testing Equipment
Our G22 or G238 Series MOR modulus of rupture flexural bend fixtures, both feature load span and support span anvil and rollers designed to rock parallel and normal to the long axis of specimen. This allows adjustment to make good contact in imperfect specimens that can be tapered either along the length or across the height. Testresources offers a line of building Glass Strength Bend Testing Equipment , Testers and Test Machines with modular fixtures that can be configured to specific glass strength bend testing needs. They can be configured with safety enclosures to handle the sample breakage. Our G124 four point bend fixture is designed specifically to EN 1288 requirements. In general, our MOR modulus of rupture flexural bend fixtures feature load span and support span anvil and rollers designed to rock parallel and normal to the long axis of specimen. This allows adjustment to make good contact in imperfect specimens that can be tapered either along the length or across the height.