Shape coefficient of impact-echo for small-size short cylinder/circular tube structures
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Fei Yao
Fei Yao, born in 1983, studied Civil Engineering at the Hunan University in Changsha, China. She received her Ph.D. in Structural Engineering in 2011. Currently, she is an Associate Professor in the College of Civil and Transport Engineering, Hohai University. Her research focuses on structural seismic resistance and structural nondestructive testing.
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Jiachun Zhuang
Jiachun Zhuang, born in 1997, holds a Bachelor of Engineering in 2019 and studied Civil Engineering at the Jiangxi University of Science and Technology, Ganzhou, China, during 2015–2019. She is now studying for a master’s degree in structural engineering at the Hohai University, whose research direction is the impact-echo nondestructive testing and mechanical properties of the prefabricated joint.
Abula Abulikemu, born in 1994, holds a Bachelor of Engineering and studied Civil Engineering at the Hohai University, Nanjing, China. He completed his bachelor’s degree in 2018. His research focuses on the impact-echo nondestructive testing and signal processing.
Abstract
The results tested by the impact-echo method of the small-size short cylinder/circular tube structure were fundamentally different from that of the large-size long one. This phenomenon cannot be described by the existing calculation formulas. To modify the classical calculation formula, finite element models of various sizes of small-size short cylinder/circular tube structures, including 80 cylinders and 125 circular tubes, were established. Modal analysis frequency was compared with numerical simulation of impact-echo frequency under partial working conditions. In addition, the impact-echo frequency of whole working conditions was counted for later analysis. The impact-echo frequency correction formulas of the small-size short cylinder/circular tube considering the model length and the cross-sectional size of the cylinder/circular tube were proposed. Moreover, their reliabilities were verified through tests. The results showed that the impact-echo frequency of the small-size short cylinder structure increased linearly with the increase in diameter, decreased with the increase in length, whereas the relationship among frequency, outer diameter, and wall thickness of the circular tube component was complicated. Moreover, the modal of the whole member was excited rather than the free modal of the cross section of the large-size cylinder/circular tube when the small-size short one was impacted.
Funding source: Fundamental Research Funds for the Central University
Award Identifier / Grant number: B200202086
About the authors
Fei Yao, born in 1983, studied Civil Engineering at the Hunan University in Changsha, China. She received her Ph.D. in Structural Engineering in 2011. Currently, she is an Associate Professor in the College of Civil and Transport Engineering, Hohai University. Her research focuses on structural seismic resistance and structural nondestructive testing.
Jiachun Zhuang, born in 1997, holds a Bachelor of Engineering in 2019 and studied Civil Engineering at the Jiangxi University of Science and Technology, Ganzhou, China, during 2015–2019. She is now studying for a master’s degree in structural engineering at the Hohai University, whose research direction is the impact-echo nondestructive testing and mechanical properties of the prefabricated joint.
Abula Abulikemu, born in 1994, holds a Bachelor of Engineering and studied Civil Engineering at the Hohai University, Nanjing, China. He completed his bachelor’s degree in 2018. His research focuses on the impact-echo nondestructive testing and signal processing.
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: This work was supported by the Fundamental Research Funds for the Central University of China (Grant No. B200202086).
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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- Resistance spot welding of Al6061 lap joints with a polyvinyl alcohol-bonded graphene interlayer
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Artikel in diesem Heft
- Frontmatter
- Effect of deep cryogenic treatment on microstructure and mechanical properties of a CoCrFeNiMo medium-entropy alloy
- Bilayer growth kinetics and tribological characterization of boronized AISI M2 steel
- Effect of graphene nanoplatelets on mechanical and impact properties of an aramid/glass-reinforced epoxy composite
- The effect of SiC content on microstructural and tribological properties of sintered B4C and SiC reinforced Al–Cu–Mg–Si matrix hybrid composites
- Effects of asymmetric tooth profile on single-tooth stiffness of polymer gears
- Hunger games search algorithm for global optimization of engineering design problems
- Alumina catalyst waste utilization for aluminum-based composites using the friction stir process
- Comparison of microstructure and wear behaviors of PTA coated AISI 304 with alumina, boron and ekaboron III powder
- Influence of testers on the ISE effect
- Crashworthiness design of heat treated vehicle parts with tailored properties
- Shape coefficient of impact-echo for small-size short cylinder/circular tube structures
- Resistance spot welding of Al6061 lap joints with a polyvinyl alcohol-bonded graphene interlayer
- Effect of reinforcement particle amounts on dry sliding wear behavior of shot-peened SiC/A356 composites
- Prediction and optimization of thrust force during the drilling of AISI 2080 steel
