Results 231 to 240 of about 122,488 (257)

Dimensional Stability of Zerodur and ULE Mirrors Undergoing Thermal Cycling

1983
Zerodur and ULE quartz have been shown to have exceptional dimensional stability over extended time periods and to be insensitive to small temperature variations when they are maintained near room temperature. However, it is not clear what their dimensional stability will be after cycling through a more extended range of temperatures such as might ...
JJ Shaffer, JM Bennett, HE Bennett
openaire   +1 more source

Thermal stabilization equipment for dimensional heat treatment of bearing rings

Metal Science and Heat Treatment, 1992
1. Heat treatment of bearing components, particularly rings, leads to distortion of the shape (ovality, conicity) and to a change in dimensions (size variation) as a result of development of elastoplastic strains. 2. Use of methods for hardening rings in salts, hot oil (120–180°C), ring rotation on shafts, or straightening reduces ring ...
openaire   +1 more source

Dimensional/Angular Stability Monitoring Techniques In -Thermal Vacuum Environment

SPIE Proceedings, 1984
Continued increase in performance and resolution for pointing and tracking hardware aboard spacecraft have required precise knowledge of their behaviour in, and response to, the thermal vacuum environment. This paper discusses acquisition of this type of knowledge by both line-of-site and interferametric methods.
openaire   +1 more source

The two-dimensional generalized analysis of thermal stability of composite superconductors

Cryogenics, 1992
Abstract The thermal stability of composite superconductors with uniformly distributed current under composite finite transverse heat conduction has been investigated within the continuous medium model. The critical disturbance energies which specify the upper limit of allowed heat generation uniformly distributed along the cross-section have been ...
openaire   +1 more source

Improved dimensional stability of zero-thermal-expansion Cu2P2O7/ZL101 composite by thermal treatment

Applied Physics Letters
Compositing negative-thermal-expansion materials with Al is an effective strategy for obtaining light zero-thermal-expansion (ZTE) materials. However, the dimensional stability of those composites is not guaranteed due to the residual stress generated during fabrication and the microstructure instability of the matrix.
Jiawei Zeng, Chenlong Wei, Guanyin Gao, Yanwei Ding, Yuxia Bai, Jianchao Lin, Buke Dong, Wenhai Song, Peng Tong, Yuping Sun   +9 more
openaire   +1 more source

Revealing the mechanism of internal stress on dimensional stability in SiC/Al composites under long-term thermal exposure

Vacuum, 2023
Longtao Jiang, Ming Zhu, Deng Gong
exaly  

Effects of thermal-cold cycling on the dimensional stability of TiC reinforced steel matrix composite

Materials Letters, 2020
Zhenyang Cai, Z Y Cai, X J Zhao
exaly  

Effect of flame retardant treatment on dimensional stability and thermal degradation of wood

Construction and Building Materials, 2015
Qiang Gao, Jianzhang Li, Jinxue Jiang
exaly  

Thermal expansion and dimensional stability of Al–Si matrix composite reinforced with high content SiC

Materials Chemistry and Physics, 2003
Longtao Jiang, Gaohui Wu, Guoqin Chen
exaly  

On the Thermal Stability of -Peptides: A Two-Dimensional Vibrational Spectroscopy Study

Helvetica Chimica Acta, 2002
Peter Hamm, Sander Woutersen, Magnus Rueping   +2 more
openaire   +1 more source