This paper describes the design and evaluation of a novel optical instrumentation system that has been developed for measuring high temperature creep deformation under long-term loads. The system includes short optical fibers, a super long working distance microscope, a CCD camera, and digital image processing software. Short optical fibers are pasted on the small region on one side of the specimen surface as markings. The two optical fibers are illuminated by a light and are focused onto the CCD camera by the super long working distance microscope. The images tracked at intervals are processed by digital image processing software. The distance between the fibers at each picture can be measured. The local creep deformations versus time are obtained by measuring the variation of relative distance between the fibers. Experiments on Cr5Mo notched specimens were carried out. The results demonstrate that the system is capable of measuring creep deformation at elevated temperature.
Skip Nav Destination
ASME 2007 Pressure Vessels and Piping Conference
July 22–26, 2007
San Antonio, Texas, USA
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
0-7918-4287-8
PROCEEDINGS PAPER
A Long-Term Local Deformation Measurement System for Notched Specimen at High Temperature
Yangyan Zheng,
Yangyan Zheng
Nanjing University of Technology, Nanjing, Jiangsu, China
Search for other works by this author on:
Xiang Ling,
Xiang Ling
Nanjing University of Technology, Nanjing, Jiangsu, China
Search for other works by this author on:
Jianjun Chen
Jianjun Chen
Nanjing University of Technology, Nanjing, Jiangsu, China
Search for other works by this author on:
Yangyan Zheng
Nanjing University of Technology, Nanjing, Jiangsu, China
Xiang Ling
Nanjing University of Technology, Nanjing, Jiangsu, China
Jianjun Chen
Nanjing University of Technology, Nanjing, Jiangsu, China
Paper No:
CREEP2007-26716, pp. 601-605; 5 pages
Published Online:
August 20, 2009
Citation
Zheng, Y, Ling, X, & Chen, J. "A Long-Term Local Deformation Measurement System for Notched Specimen at High Temperature." Proceedings of the ASME 2007 Pressure Vessels and Piping Conference. Volume 9: Eighth International Conference on Creep and Fatigue at Elevated Temperatures. San Antonio, Texas, USA. July 22–26, 2007. pp. 601-605. ASME. https://doi.org/10.1115/CREEP2007-26716
Download citation file:
11
Views
Related Proceedings Papers
Related Articles
Hysteresis of Thermochromic Liquid Crystal Temperature Measurement Based on Hue
J. Heat Transfer (November,1999)
The Creep and Stress-Rupture Testing of Steam-Boiler Materials
Trans. ASME (February,1952)
A Metallographic Technique for High Temperature Creep Damage Assessment in Single Crystal Alloys
J. Eng. Gas Turbines Power (October,1999)
Related Chapters
Basic Concepts
Design & Analysis of ASME Boiler and Pressure Vessel Components in the Creep Range
Members in Compression
Design & Analysis of ASME Boiler and Pressure Vessel Components in the Creep Range
Determining Damaged Regions that Occur on the Printhead of High Speed Thermal Transfer Printers
International Conference on Computer Research and Development, 5th (ICCRD 2013)