scholarly journals Single step zero-thermal-expansion temperature measurement of optical reference cavities

2021 ◽  
Vol 29 (19) ◽  
pp. 30567
Author(s):  
Zhiyuan Wang ◽  
Yanxia Ye ◽  
Jialu Chang ◽  
Jingxuan Zhang ◽  
Yunlong Sun ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
Temperature Measurement ◽  
Single Step ◽  
Optical Reference ◽  
Expansion Temperature

Thermal compensation using the hybrid metrology approach compared to traditional scaling

2017 ◽  
Vol 232 (13) ◽  
pp. 2364-2374
Author(s):  
David Ross-Pinnock ◽  
Glen Mullineux
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Thermal Expansion ◽  
Temperature Measurement ◽  
Large Scale ◽  
Element Analysis ◽  
Linear Temperature ◽  
Temperature Distributions ◽  
Finite Element Analysis Simulation ◽  
Uniform Scaling

Control of temperature in large-scale manufacturing environments is not always practical or economical, introducing thermal effects including variation in ambient refractive index and thermal expansion. Thermal expansion is one of the largest contributors to measurement uncertainty; however, temperature distributions are not widely measured. Uncertainties can also be introduced in scaling to standard temperature. For more complex temperature distributions with non-linear temperature gradients, uniform scaling is unrealistic. Deformations have been measured photogrammetrically in two thermally challenging scenarios with localised heating. Extended temperature measurement has been tested with finite element analysis to assess a compensation methodology for coordinate measurement. This has been compared to commonly used uniform scaling and has outperformed this with a highly simplified finite element analysis simulation in scaling a number of coordinates at once. This work highlighted the need for focus on reproducible temperature measurement for dimensional measurement in non-standard environments.

In Situ Synthesis and Properties of Aluminum Composites with Ultrafine TiB2 and Al2O3 Particulates

2005 ◽  
Vol 475-479 ◽  
pp. 925-928
Author(s):  
Kenji Wakashima ◽  
T. Shimoyamada ◽  
H. Noma ◽  
Tomonari Inamura ◽  
Hideki Hosoda
Keyword(s):  
Thermal Expansion ◽  
Elevated Temperature ◽  
Creep Behavior ◽  
Metal Matrix ◽  
Tensile Modulus ◽  
In Situ Synthesis ◽  
Matrix Composites ◽  
Reactive Sintering ◽  
Expansion Temperature

In this paper, we describe our recent work on metal matrix composites (MMCs) with submicron-size TiB2 and Al2O3 particulates that are synthesized in situ from Al-rich Al-Ti-B and Al-TiO2- B powder reactants by reactive sintering. Reaction sequences examined in the two different reactant systems are summarized, and some experimental results on elevated-temperature properties, i.e. thermal expansion, temperature dependence of dynamic tensile modulus and creep behavior, are shown and discussed from micromechanics-based viewpoints.

scholarly journals Design of an optical reference cavity with low thermal noise limit and flexible thermal expansion properties

2013 ◽  
Vol 67 (2) ◽  
Author(s):  
Jie Zhang ◽  
Yingxin Luo ◽  
Bing Ouyang ◽  
Ke Deng ◽  
Zehuang Lu ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
Thermal Noise ◽  
Reference Cavity ◽  
Optical Reference ◽  
Noise Limit
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