#AskGlaston: Does the shard size of tempered glass vary depending on the impact strength?

Date: 15 October 2020
Copyright:
  • Antti Aronen | Glaston
  • https://www.glastory.net/askglaston-episode-57-does-the-shard-size-of-tempered-glass-vary-depending-on-the-impact-strength/

Date: 15 October 2020

It is a very known behavior that the glass fragmentation depends on where you break the glass.

This week, we’ve received the following question from Middle East:

I have observed that when we break glass in the center with a lot of force, the fragments close to the point of impact are sometimes big long shards exceeding the standard of 40 fragments. However, shards further from the center of the impact are smaller in size. Is this normal or does this mean the glass is not tempered properly? Does the shard size vary depending on the strength of the impact?

And if this means our glass is not tempered properly, what can we do to rectify this?

It is a very known behavior that the glass fragmentation depends on where you break the glass. If you break the glass in the center, you can get long shards, but if you break it on the edges, then usually the fragments are smaller. And that’s because you have different boundary conditions depending on whether you break the glass in the center or on the edge.

If you want to get smaller fragments even if you break the glass in the center, you can increase the stress level by tempering the glass at a higher temperature and with the higher cooling power. Then, the size of the fragments will get smaller. 

#AskGlaston: Does the shard size of tempered glass vary depending on the impact strength?

#AskGlaston: Does the shard size of tempered glass vary depending on the impact strength?

600450 #AskGlaston: Does the shard size of tempered glass vary depending on the impact strength? glassonweb.com

Others also read

New research explores how non-destructive photoelastic methods could improve quality control for large-format thermally toughened glass, reducing reliance on costly and time-consuming destructive testing.
In this sixth episode of #AskGlaston flat tempering series, we explore how to avoid loading delays in tempering.
Mikko Rantala on Glastory: Glass tempering is an energy-hungry process, and not just because of the heat. Cooling the glass also demands a surprising amount of power, especially with thinner products.
As labor shortages and efficiency demands grow, automation is transforming glass tempering—starting with AI-driven batch building that boosts productivity, cuts energy use, and maximizes furnace performance.
This study explores how different laminated glass configurations and interlayer materials impact blast resistance performance.
This paper presents a groundbreaking technological development in the optical quality of tempered glass.

FROM INDUSTRY

Polígono Industrial El Bayo, parcela I, 19
24492 Cubillos del Sil León
Spain

ARTICLES RELATED PRODUCTS

Qingdao AEON Glass Co., Ltd.
Hornos Industriales Pujol
LISEC Austria GmbH
Hornos Industriales Pujol
LISEC Austria GmbH

Add new comment