The Significance of Sub-critical NiS Inclusions

Even after heat soaking, toughened glass is liable to a few apparently spontaneous failures, generally attributed to incomplete conversion of nickel sulphide inclusions. Another alternative is explored here: even with full conversion, inevitably some of these inclusions are too small to fail in the heat soak, but may cause failures at unexpectedly low loads in service. Taking this into account changes the nature of risk analyses for the behaviour of heat soaked glass.

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The Authors

Mr. David Gelder Mathematics for Manufacturers Independent Consultant Mathematical Modeller with experience largely but not exclusively in the glass industry, currently (inter alia) a Technology Translator for the Smith Institute Faraday Partnership for the Mathematical... Read more