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Shaping Flat Glass

May 26, 2010 By Tom Read Leave a Comment

Glass expert describes the condition of the edges of windows, mirrors and other flat glass pieces. Almost all flat glass pieces are shaped from larger pieces using glass scribe and break techniques. Thus the edge of the part has two distinct sides. The photograph above is a microscopic picture of a the edge of an […]

Filed Under: Failure Analysis Tagged With: Automobile, Glass, Safety Glass, Window

Glass Machining Expert Discribes Antique Scribed Edge

April 27, 2010 By Tom Read Leave a Comment

Glass expert had he opportunity to examine the edge of antique rolled, ground and polished window glass. This glass was removed from a greenhouse built in 1930. The window glass was sized by glass scribing and breaking it from a larger piece of glass. Above is a photomicrograph of the edge of the window. The […]

Filed Under: Failure Analysis Tagged With: Breaking, Expert Witness, Glass, Glass Machining, Scribing

Glass Expert Witness Discusses Window Failure

April 24, 2010 By Tom Read Leave a Comment

Glass failure analysis expert discusses interesting window failure, that of a piece of antique window glass. The window expert performed a failure analysis that determined the failure initiated at crush damage from the scribing operation, and it started as a bending crack. It then transformed into a “thermal crack”. That is the crack front was […]

Filed Under: Failure Analysis Tagged With: Float Glass Processing, Tempered Glass, Window, Window Failure

Glass Expert Discusses Termpered Glass Cookware

April 12, 2010 By Tom Read Leave a Comment

Modern Pyrex glass cookware is now made from tempered soda lime glass. As a result, there is a potential that the tempered glass failure will create dangerous projectiles. In one case it was found that if the temper glass stresses are not symmetrical, flying glass pieces will occur. In the present case, tempered glass cookware […]

Filed Under: Failure Analysis Tagged With: Cookware, Glass Cookware, Pyrex, Tempered Glass

GLass Failure Analysis Expert Discusses Wire Glass

April 2, 2010 By Tom Read Leave a Comment

Safety glass expert has examined numerous broken wire glass doors and windows. In the past wire glass has been mistaken to be safety glass; however, it is just as dangerous as standard annealed window glass. The wire is bonded between two pieces of semi-soft glass at high temperature. When this “sandwich” cools to room temperature, […]

Filed Under: Failure Analysis Tagged With: Door, Window, Wire Glass

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Read Consulting Failure Analysis

Thomas L. Read, PhD,
1435 Fulton Road Santa Rosa, CA
Phone: 707-494-5089
email: info@readconsulting.com

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Read Consulting Failure Analysis

Thomas L. Read, PhD,
1435 Fulton Road Santa Rosa, CA
Phone: 707-494-5089
email: info@readconsulting.com

Connect With Read Consulting

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Registered Professional Engineer

Thomas L. Read, PhD., CEO
Registered Professional Engineer
Certificate No. MF002174
State of California.

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