The latest news from American Glass Research.

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Volume 7 / Issue 2

This blossoming Spring flower

is actually crystalline calcium carbonate (Ca2O3) that has grown on the inside surface of a bottle.

This crystalline structure was the result of atmospheric weathering present on the surface. It is somewhat unusual in size and shape compared to the typical hexagonal crystallites observed on weathered surfaces. 

The image was created at 2500X using a scanning electron microscope (SEM) and colorized according to elemental composition.


Q: Is AGR open and fully operational?

A: “Yes”.  We have remained open to handle any testing, fracture diagnosis, glass quality, design analysis or analytical needs. We are taking all necessary safety precautions for our customers and our employees. 

We recognize that our customers are essential businesses and our Butler, Maumee or Delft labs are all ready to provide the support you need to continue manufacturing and filling glass containers. Contact Us to discuss any glass issues you are experiencing.

We would like to congratulate …

AGR Senior Scientist Clarissa de Lima on her recent PhD thesis defense at Delft University of Technology. The title of her thesis is ”Innovative low-melting glass compositions containing fly ash and blast furnace slag”.

We are very proud to have her as part of the American Glass Research Global team. She is working in our Delft Testing Laboratory in The Netherlands. We look forward to many more accomplishments in her career with AGR.

If you would like to read her thesis
you can download it HERE.

You can also contact  Dr. Clarissa de Lima directly at our Deflt Testing Lab to discuss your glass needs by email at: or by phone at: +31 (0)15 890 40 20


Did you know ...

The fracture pattern characteristics of baffle failures under a pressure load differ from those acted upon by a thermal shock load?


Pressure failures that originate and extend along the baffle seam typically depart the seam at a severe angle while thermal shock failures typically continue along at a mild angle as the fracture departs the seam.

(as shown in the two photos).

The reason for the difference is the response of the fracture to the primary stress fields for each load.

You can learn more about the development of various stress fields associated with all the major loads in our Fracture 1 and Design seminars.  Learn more in our Seminar Catalogue or Contact Us to discuss any glass failures you may be experiencing.

AGR Training Seminars Update 

Agr is actively monitoring the current conditions of the Pandemic as it relates to our seminars. We plan to finalize specific seminars, dates and locations in the immediate future.

In the meantime, we will be offering a FREE 45 minute webinar entitled "The Do's and Don'ts of Lightweighting" in early July. Details and registration will be available soon. Contact Us if you have any questions.

To learn more about all of our seminars, visit our Seminar Catalogue and if you have questions about a specific seminar date please Contact Us 
American Glass Research
603 Evans City Road, Butler, PA 16001
Tel: +1 (724) 482-2163
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American Glass Research · 603 Evans City Road · Butler, PA 16001 · USA

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