Influence of defects and surface defects in quartz glass on its strength during forming

A study of the fracture mechanisms in pristine silica fibres utilising high speed imaging techniques

“…The metal wires which support the lower stages are shown by the dashed line. are significantly stronger than silica fibres produced by other methods [36]. It should be noted that some articles point out that the Griffith approach cannot be applied if length of the assumed surface cracks falls in the nanometer range [37].…”

“…Such fibres, that are believed to be free from external flaws, have been observed in many experimental studies. Those fibres are named as pristine [28], untouched [36], perfect [35] or flawless [38].…”