Photoelastic confirmation of surface stress relaxation in silica glasses: Fiber bending and rod torsion
Photoelastic confirmation of surface stress relaxation in silica glasses: Fiber bending and rod torsion
复制标题
石英玻璃表面应力松弛的光弹性证实:光纤弯曲和杆扭转
DOI:
10.1111/jace.17690
复制
发表时间:
2021
影响因子:
3.9
通讯作者:
Tomozawa, Minoru
中科院分区:
文献类型:
--
作者:
Hausmann, Bronson D.;Aaldenberg, Emily M.;Tomozawa, Minoru
Silica glass samples were given various heat treatments under stress at low temperatures and subsequently their residual stress distributions in terms of retardance were observed using a polarized light microscope, confirming previously reported fast surface stress relaxation while providing more detailed characterization. Retardance profiles of silica glass fibers heat‐treated under a constant bending strain in the presence of atmospheric water vapor were measured and fit to a previously developed diffusion‐based relaxation model. The retardance of a cross‐section of a silica glass rod heat‐treated at 650°C in lab air under applied torsional shear strain was also measured to confirm the presence of residual surface shear stress which was predicted by the decrease of torque with time for the rod. Together, these results confirm the low‐temperature fast surface stress relaxation which occurs when water vapor is present for both bending and shear stresses.
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DOI:
--
发表时间:
1998
期刊:
影响因子:
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作者:
T. Onogi;Tadashi Inoue;K. Osaki
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DOI:
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发表时间:
2013
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DOI:
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发表时间:
2015
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作者:
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1.9
作者:
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影响因子:
3.9
作者:
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通讯作者:
Tomozawa, Minoru