The Life Predicting Calculations in Whole Process Realized by Calculable Materials Constants from short Crack to Long Crack Growth Process

Yangui Yu

doi:doi:10.11648/j.ijmsa.20150402.13

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The Life Predicting Calculations in Whole Process Realized by Calculable Materials Constants from short Crack to Long Crack Growth Process

Yangui Yu

Published in International Journal of Materials Science and Applications (Volume 4, Issue 2)

Received: 26 January 2015 Accepted: 14 February 2015 Published: 25 February 2015

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Abstract

To use the theoretical approach, to adopt the simple stress-, or strain-parameter method, by means of the conventional material constants, to establish some new calculation models in whole crack growth process for elastic-plastic steels, which are the equations of the driving forces and the life predictions from micro to macro crack; To provide yet several crack growth-rate-linking-equations and life calculating expressions in whole process, for which are under different loading conditions in high cycle and low cycle fatigue. For key parameters A1, A2 and B2 have proposed some new concept, and to define their physical and geometrical meanings. For the transition crack size from crack forming stage to crack growth stage, provide concrete calculation processes and methods. Thereby to realized the lifetime predicting calculations in whole process based on traditional calculable material parameters. The purpose is to try to make the modern fatigue-fracture discipline depended on tests become gradually calculable subjects as the traditional material mechanics. So that will be having practical significances for saving testing manpower and funds, for promoting applying and development relevant disciplines.

Published in	International Journal of Materials Science and Applications (Volume 4, Issue 2)
DOI	10.11648/j.ijmsa.20150402.13
Page(s)	83-95
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2015. Published by Science Publishing Group

Keywords

Elastic-Plastic Materials, Fatigue Fracture, Crack Propagation Modeling, Low Cycle Fatigue, High Cycle Fatigue, Lifetime Prediction

References

[1]	Yu Yangui, Sun Yiming, MaYanghui and XuFeng. The Computing of intersecting relations for its Strength Problem on Damage and Fracture to Materials with short and long crack. 2011); In: International Scholarly Research Network ISRN. Mechanical Engineering Volume, Article ID 876396. http://www.hindawi.com/isrn/me/.
[2]	Yangui Yu. The Calculations of Evolving Rates Realized with Two of Type Variables in Whole Process for Elastic-Plastic Materials Behaviors under Unsymmetrical Cycle. Mechanical Engineering Research. Canadian Center of Science and Education 2012; 2. (2):77-87; ISSN 1927-0607(print) E-ISSN 1927-0615 (Online).
[3]	Yangui Yu. The Life Predicting Calculations in Whole Process Realized from Micro to Macro Damage with Conventional Materials Constants. American Journal of Science and Technology.Vol. 1, No. 5, 2014, pp. 310-328.
[4]	Yu Yangui, Xu Feng, Studies and Application of Calculation Methods on Small Crack Growth Behaviors for Elastic-plastic Materials, Chinese Journal of Mechanical Engineering, 43, (12), 240-245. (2007), (in Chinese).
[5]	YU Yangui, LIU Xiang, ZHANG Chang sheng and TAN Yanhua. Fatigue damage calculated by Ratio-Method Metallic Material with small crack under un-symmetric Cyclic Loading, Chinese Journal of Mechanical Engineering, 19, (2), 312-316, (2006).
[6]	YU Yangui. Fatigue Damage Calculated by the Ratio-Method to Materials and Its Machine Parts, Chinese Journal of Aeronautics, 16, (3) 157-161, (2003).
[7]	Yu Yangui and LIU Xiang. Studies and Applications of three Kinds of Calculation Methods by Describing Damage Evolving Behaviors for Elastic-Plastic Materials, Chinese Journal of Aeronautics, 19, (1), 52-58,(2006).
[8]	Yangui Yu, Several kinds of Calculation Methods on the Crack growth Rates for Elastic-Plastic Steels. In: 13th International Conference on fracture (ICF13), (Beijing, 2013) In CD, ID S17-045.
[9]	Morrow, j. D. Fatigue Design handbook, Section 3.2, SAE Advances in Engineering, Society for Automotive Engineers, (Warrendale, PA, 1968), Vol. 4, pp. 21-29.
[10]	Y. Murakami, S. Sarada, T. Endo. H. Tani-ishi, Correlations among Growth Law of Small Crack, Low-Cycle Fatigue Law and ,Applicability of Miner’s Rule, Engineering Fracture Mechanics, 18, (5) 909-924, (1983).
[11]	S. V. Doronin, et al., Ed. RAN U. E. Soken, Models on the fracture and the strength on technology systems for carry structures, (Novosirsk Science, 2005) , PP. 160-165. (in Russian)
[12]	S. Ya. Yaliema, Correction about Paris’s equation and cyclic intensity character of crack, Strength Problem.147, (9) 20-28(1981). (in Russian)
[13]	Xian-Kui Zhu, James A. Joyce, Review of fracture toughness (G, K, J, CTOD, CTOA) testing and standardization, Engineering Fracture Mechanics, 85, 1-46, (2012).
[14]	U. Zerbst, S. Beretta, G. Kohler, A. Lawton, M. Vormwald, H.Th. Beier, C. Klinger,I. C erny´, J. Rudlin, T. Heckel a, D. Klingbeil, Safe life and damage tolerance aspects of railway axles – A review. Engineering Fracture Mechanics. 98, 214–271 (2013).
[15]	Yu Yangui, MaYanghuia, The Calculation in whole Process Rate Realized with Two of Type Variable under Symmetrical Cycle for Elastic-Plastic Materials Behavior, in: 19th European Conference on Fracture, (Kazan, Russia, 26-31 August, 2012), In CD, ID 510.
[16]	Yu. Yangui, Bi Baoxiang, MaYanghau, Xu Feng. Damage Calculations in Whole Evolving Process Actualized for the Materials Behaviors of Structure with Cracks to Use Software Technique. In: International Conference on Fracture Proceeding. Ottawa, Canada. 2009; 12-19. CD.

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APA Style

Yangui Yu. (2015). The Life Predicting Calculations in Whole Process Realized by Calculable Materials Constants from short Crack to Long Crack Growth Process. International Journal of Materials Science and Applications, 4(2), 83-95. https://doi.org/10.11648/j.ijmsa.20150402.13

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ACS Style

Yangui Yu. The Life Predicting Calculations in Whole Process Realized by Calculable Materials Constants from short Crack to Long Crack Growth Process. Int. J. Mater. Sci. Appl. 2015, 4(2), 83-95. doi: 10.11648/j.ijmsa.20150402.13

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AMA Style

Yangui Yu. The Life Predicting Calculations in Whole Process Realized by Calculable Materials Constants from short Crack to Long Crack Growth Process. Int J Mater Sci Appl. 2015;4(2):83-95. doi: 10.11648/j.ijmsa.20150402.13

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@article{10.11648/j.ijmsa.20150402.13,
  author = {Yangui Yu},
  title = {The Life Predicting Calculations in Whole Process Realized by Calculable Materials Constants from short Crack to Long Crack Growth Process},
  journal = {International Journal of Materials Science and Applications},
  volume = {4},
  number = {2},
  pages = {83-95},
  doi = {10.11648/j.ijmsa.20150402.13},
  url = {https://doi.org/10.11648/j.ijmsa.20150402.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmsa.20150402.13},
  abstract = {To use the theoretical approach, to adopt the simple stress-, or strain-parameter method, by means of the conventional material constants, to establish some new calculation models in whole crack growth process for elastic-plastic steels, which are the equations of the driving forces and the life predictions from micro to macro crack; To provide yet several crack growth-rate-linking-equations and life calculating expressions in whole process, for which are under different loading conditions in high cycle and low cycle fatigue. For key parameters A1, A2 and B2 have proposed some new concept, and to define their physical and geometrical meanings. For the transition crack size from crack forming stage to crack growth stage, provide concrete calculation processes and methods. Thereby to realized the lifetime predicting calculations in whole process based on traditional calculable material parameters. The purpose is to try to make the modern fatigue-fracture discipline depended on tests become gradually calculable subjects as the traditional material mechanics. So that will be having practical significances for saving testing manpower and funds, for promoting applying and development relevant disciplines.},
 year = {2015}
}

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TY  - JOUR
T1  - The Life Predicting Calculations in Whole Process Realized by Calculable Materials Constants from short Crack to Long Crack Growth Process
AU  - Yangui Yu
Y1  - 2015/02/25
PY  - 2015
N1  - https://doi.org/10.11648/j.ijmsa.20150402.13
DO  - 10.11648/j.ijmsa.20150402.13
T2  - International Journal of Materials Science and Applications
JF  - International Journal of Materials Science and Applications
JO  - International Journal of Materials Science and Applications
SP  - 83
EP  - 95
PB  - Science Publishing Group
SN  - 2327-2643
UR  - https://doi.org/10.11648/j.ijmsa.20150402.13
AB  - To use the theoretical approach, to adopt the simple stress-, or strain-parameter method, by means of the conventional material constants, to establish some new calculation models in whole crack growth process for elastic-plastic steels, which are the equations of the driving forces and the life predictions from micro to macro crack; To provide yet several crack growth-rate-linking-equations and life calculating expressions in whole process, for which are under different loading conditions in high cycle and low cycle fatigue. For key parameters A1, A2 and B2 have proposed some new concept, and to define their physical and geometrical meanings. For the transition crack size from crack forming stage to crack growth stage, provide concrete calculation processes and methods. Thereby to realized the lifetime predicting calculations in whole process based on traditional calculable material parameters. The purpose is to try to make the modern fatigue-fracture discipline depended on tests become gradually calculable subjects as the traditional material mechanics. So that will be having practical significances for saving testing manpower and funds, for promoting applying and development relevant disciplines.
VL  - 4
IS  - 2
ER  -

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Author Information

Yangui Yu

Zhejiang Guangxin New Technology Application Academy of Electromechanical and Chemical Engineering, Hangzhou, China

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Plain Text BibTeX RIS

APA Style

Yangui Yu. (2015). The Life Predicting Calculations in Whole Process Realized by Calculable Materials Constants from short Crack to Long Crack Growth Process. International Journal of Materials Science and Applications, 4(2), 83-95. https://doi.org/10.11648/j.ijmsa.20150402.13

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ACS Style

Yangui Yu. The Life Predicting Calculations in Whole Process Realized by Calculable Materials Constants from short Crack to Long Crack Growth Process. Int. J. Mater. Sci. Appl. 2015, 4(2), 83-95. doi: 10.11648/j.ijmsa.20150402.13

Copy | Download

AMA Style

Yangui Yu. The Life Predicting Calculations in Whole Process Realized by Calculable Materials Constants from short Crack to Long Crack Growth Process. Int J Mater Sci Appl. 2015;4(2):83-95. doi: 10.11648/j.ijmsa.20150402.13

Copy | Download

@article{10.11648/j.ijmsa.20150402.13,
  author = {Yangui Yu},
  title = {The Life Predicting Calculations in Whole Process Realized by Calculable Materials Constants from short Crack to Long Crack Growth Process},
  journal = {International Journal of Materials Science and Applications},
  volume = {4},
  number = {2},
  pages = {83-95},
  doi = {10.11648/j.ijmsa.20150402.13},
  url = {https://doi.org/10.11648/j.ijmsa.20150402.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmsa.20150402.13},
  abstract = {To use the theoretical approach, to adopt the simple stress-, or strain-parameter method, by means of the conventional material constants, to establish some new calculation models in whole crack growth process for elastic-plastic steels, which are the equations of the driving forces and the life predictions from micro to macro crack; To provide yet several crack growth-rate-linking-equations and life calculating expressions in whole process, for which are under different loading conditions in high cycle and low cycle fatigue. For key parameters A1, A2 and B2 have proposed some new concept, and to define their physical and geometrical meanings. For the transition crack size from crack forming stage to crack growth stage, provide concrete calculation processes and methods. Thereby to realized the lifetime predicting calculations in whole process based on traditional calculable material parameters. The purpose is to try to make the modern fatigue-fracture discipline depended on tests become gradually calculable subjects as the traditional material mechanics. So that will be having practical significances for saving testing manpower and funds, for promoting applying and development relevant disciplines.},
 year = {2015}
}

Copy | Download

TY  - JOUR
T1  - The Life Predicting Calculations in Whole Process Realized by Calculable Materials Constants from short Crack to Long Crack Growth Process
AU  - Yangui Yu
Y1  - 2015/02/25
PY  - 2015
N1  - https://doi.org/10.11648/j.ijmsa.20150402.13
DO  - 10.11648/j.ijmsa.20150402.13
T2  - International Journal of Materials Science and Applications
JF  - International Journal of Materials Science and Applications
JO  - International Journal of Materials Science and Applications
SP  - 83
EP  - 95
PB  - Science Publishing Group
SN  - 2327-2643
UR  - https://doi.org/10.11648/j.ijmsa.20150402.13
AB  - To use the theoretical approach, to adopt the simple stress-, or strain-parameter method, by means of the conventional material constants, to establish some new calculation models in whole crack growth process for elastic-plastic steels, which are the equations of the driving forces and the life predictions from micro to macro crack; To provide yet several crack growth-rate-linking-equations and life calculating expressions in whole process, for which are under different loading conditions in high cycle and low cycle fatigue. For key parameters A1, A2 and B2 have proposed some new concept, and to define their physical and geometrical meanings. For the transition crack size from crack forming stage to crack growth stage, provide concrete calculation processes and methods. Thereby to realized the lifetime predicting calculations in whole process based on traditional calculable material parameters. The purpose is to try to make the modern fatigue-fracture discipline depended on tests become gradually calculable subjects as the traditional material mechanics. So that will be having practical significances for saving testing manpower and funds, for promoting applying and development relevant disciplines.
VL  - 4
IS  - 2
ER  -

Copy | Download