Related Experiment Video
Updated: Feb 14, 2026

Crack Monitoring in Resonance Fatigue Testing of Welded Specimens Using Digital Image Correlation
Published on: September 29, 2019
Simplification of Low-Cycle Creep-Fatigue Load Spectrum of Combustion Chamber and Life Assessment for Feature
Dingnan Cheng1, Honghua Zhao1,2, Qiang Zhang1
1AECC Hunan Aviation Powerplant Research Institute, Zhuzhou 412002, China.
Abstract:
Based on the damage equivalence principle, simplification of the low-cycle creep-fatigue original load spectrum of a combustion chamber under multi-stage flight conditions, such as low speed, takeoff, climb, and cruise states, and experimental verification were carried out in this study. The low-cycle creep-fatigue life of the combustion chamber feature simulation specimens was predicted. The results showed that compared with the original load spectrum, the simplified load spectrum had an average life error of 6.13% in the low-cycle creep-fatigue tests of flat-plate specimens with a single hole. The simplified load spectrum test results and the original load spectrum test results were both within the double dispersion band of their average values. The low-cycle creep-fatigue test results of the flat specimens with single or multiple holes were both within the double dispersion band of the predicted results, while the test results of circular tube specimens with multiple holes were basically within the fourfold dispersion band of the predicted results. In addition, after passing cooling gas inside the circular tube test specimens with multiple holes, the temperature near the gas film holes was reduced, thereby improving their low-cycle creep-fatigue test life.
More Related Videos
06:54Ultrasonic Fatigue Testing in the Tension-Compression Mode
Published on: March 7, 2018
07:24Combustion Chemistry of Fuels: Quantitative Speciation Data Obtained from an Atmospheric High-temperature Flow Reactor with Coupled Molecular-beam Mass Spectrometer
Published on: February 19, 2018
Related Concept Videos
The Angiosperm Life Cycle
Retrovirus Life Cycles
Creep in Concrete
Factors Affecting Creep
Further, the water/cement ratio is critical, as a lower ratio increases concrete strength, thus reducing creep. The strength of the...
Effects of Creep
The Electromagnetic Spectrum