Some Views on the Breaking of Glass Derived from the Examination of Fracture Surfaces

JSGT 1950 V34 T114-T118

 Following up the work of F. W. Preston in the USA and of J. B. Murgatroyd in this country on fractures in glass, it is suggested that rib marks are ripples on the fracture surface, the suggestion being based on the formation of intersecting ripples under suitable conditions. Further evidence that hackle is the result of an independent fracture within the body of the glass is provided. The possibility of a shock front being its cause is discussed.

H. Marshall Bateson