公开(公告)号：US20170023502A1

公开(公告)日：2017-01-26

申请号：US15215292

申请日：2016-07-20

Applicant: SCHOTT AG

Inventor： Axel Engel ,  Clemens Kunisch ,  Ralf Jedamzik ,  Gerhard Westenberger ,  Peter Fischer

IPC: G01N25/16 ,  G01B9/02

CPC classification number: G01N25/16 ,  G01B9/02 ,  G01B11/161

Abstract: A method is provided for determining the thermal expansion of a low thermal expansion material with very high accuracy of at most +/−3 ppb/K or less and/or with a reproducibility of at most +/−1 ppb/K or less. A measuring device is also provided that includes an advanced push rod dilatometer.

Abstract translation: 提供一种用于以至多+/- 3ppb / K或更低的精确度和/或至多+/- 1ppb / K或更小的再现性来确定低热膨胀材料的热膨胀的方法。 还提供了包括先进的推杆膨胀计的测量装置。

公开(公告)号：US20150285707A1

公开(公告)日：2015-10-08

申请号：US14437229

申请日：2013-10-24

Applicant: SCHOTT AG

Inventor： Ralf Jedamzik ,  Clemens Kunisch ,  Thoralf Johansson

IPC: G01M11/00 ,  G01N25/02 ,  G01N19/00 ,  G02B5/08 ,  G02B1/00

CPC classification number: G01M11/005 ,  G01N19/00 ,  G01N25/02 ,  G01N33/386 ,  G02B1/00 ,  G02B5/08

Abstract: The invention generally relates to manufacturing or providing of glass or glass ceramic products. The invention is based on the object to allow for providing glass or glass ceramic products having very accurately characterized thermo-mechanical properties. For this purpose, a deformation of the glass or glass ceramic material is measured at least twice as a function of time with different rates of change in temperature or a mechanical stress. Based on the measurements, relaxation times and weighting factors are determined by modelling. Then, based on the relaxation times and weighting factors related to the distribution of relaxation processes occurring in the product, a time-delayed change of a temperature-dependent or stress-dependent physical quantity, such as thermal expansion or refractive index, is calculated as a function of a predefined temperature change or stress change. The invention is used for selecting during manufacturing suitable glass products exhibiting selected time-delayed properties.

Abstract translation: 本发明一般涉及制造或提供玻璃或玻璃陶瓷产品。 本发明基于允许提供具有非常精确地表征的热机械性能的玻璃或玻璃陶瓷产品的目的。 为此目的，玻璃或玻璃陶瓷材料的变形，以不同的温度变化率或机械应力作为时间的函数至少测量两次。 基于测量，松弛时间和加权因子通过建模确定。 然后，基于与产品中发生的松弛过程的分布相关的松弛时间和加权因子，将温度依赖性或应力依赖物理量（例如热膨胀或折射率）的时间延迟变化计算为 预定温度变化或应力变化的功能。 本发明用于在制造具有选定的时间延迟性质的合适的玻璃制品时进行选择。