The Use of Wire Resistance Strain Gauges and a Polarising Microscope to Determine Permanent Stresses in Tempered Glass

JSGT 1951 V35 T487-T489

In many instances the magnitude of stresses in glass articles is hard to determine by polariscopic methods alone. A combination technique involving the use of minute strain-gauges cemented to the intact article, then cutting up the article, reading the strain-gauge information and finally examining the dissected article in the polariscope, permits a close estimate of stress in most cases.

I. L. Resnick & R. E. Mould