The Life Predicting Calculations Based on Conventional Material Constants from Short Crack to Long Crack Growth Process
International Journal of Materials Science and Applications
Volume 4, Issue 3, May 2015, Pages: 173-188
Received: Mar. 15, 2015;
Accepted: Apr. 22, 2015;
Published: May 4, 2015
Views 4412 Downloads 124
Yangui Yu, Zhejiang GuangXin New Technology Application Academy of Electromechanical and Chemical Engineering, Hangzhou, China
To use the theoretical approach, to adopt the multiplication-method of two-parameters, by means of the traditional and the modern material constants, thereby to establish some of new calculation models in all crack growth process. In which are the equations of the driving forces, the crack-growth-rate-linking-equation in whole process, and the life predictions; and to propose yet some calculating expressions under different loading conditions. For key material parameters give their new concepts, and provide new functional formulas, define their physical and geometrical meanings. For the transition crack size from micro to macro crack growth process, provide concrete calculation processes and methods. Thereby realize the lifetime predicting calculations in whole process based on conventional materials constants and by the multiplication method of two parameters.
The Life Predicting Calculations Based on Conventional Material Constants from Short Crack to Long Crack Growth Process, International Journal of Materials Science and Applications.
Vol. 4, No. 3,
2015, pp. 173-188.
Yangui Yu. Life Predictions Based on Calculable Materials Constants from Micro to Macro Fatigue Damage Processes. American Journal of Materials Research. Vol. 1, No. 4, 2014, pp. 59-73.
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 (2011). http://www.hindawi.com/isrn/me/.
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).
Yu Yangui, Xu Feng. Studies and Application of Calculation Methods on Small Crack Growth Behaviors for Elastic-plastic Materials. Chinese Journal of Mechanical Engineering. Vol. 43, 2007; 12: 240-245. (In Chinese).
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. Vol. 19, 2006; 2: 312-316.
YU Yangui. Fatigue Damage Calculated by the Ratio-Method to Materials and Its Machine Parts. Chinese Journal of Aeronautics. Vol. 16, 2003; 3: 157-161.
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. Vol, 19, 2006; 1: 52-58.
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.
Smith K N, Watson P and Topper T H. A stress-strain function of the fatigue of metals. Journal of Materials. Vol. 5, 1970; 4: 767-778.
Yu Yangui, Jiang Xiaoluo, Chen Jianyu and Wu Zhiyuan. The Fatigue Damage Calculated with Method of the Multiplication ∆ε_e ∆ε_p. In: Proceeding of the Eighth International Fatigue Congress, Vol. 5, Stockholm Sweden; June 3-7, 2002. p. 2815-2822.
Morrow J D. Fatigue Design Handbook, Section 3.2, SAE Advances in Engineering; Vol. 4: Society for Automotive Engineers, Warrenddale, PA. 1968. pp. 21-29.
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, Vol.18, 5. 1983: 909-924,
Masing, G. Eigerspannungen and Verfestigung bein Messing, Proceeding of the 2nd International Congress of Applied Mechanics, Zurich, 1976, pp. 332-335.
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)
S. Ya. Yaliema. Correction about Paris’s equation and cyclic intensity character of crack. J. Strength Problem. Vol, 147, 1981; 9:20-28. (In Russian).
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.
Xian-Kui Zhu, James A. Joyce, Review of fracture toughness (G, K, J, CTOD, CTOA) testing and standardization, Engineering Fracture Mechanics, 85, 2012: 1-46.
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).
Yangui Yu. Calculations for Crack Growth Rate in Whole Process Realized with the Single Stress-Strain-Parameter Method for Elastic-Plastic Materials Contained Crack. Journal of Materials Sciences and Applications. Vol. 1, No. 3, 2015, pp. 98-106.
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: 12th International Conference on Fracture Proceeding. Ottawa, Canada. July 12-19, 2009. CD, Author Index Y, Yangui.
Yangui Yu. 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. Vol. 4, No. 2, 2015, pp. 83-95.doi: 10.11648/j.ijmsa.20150402.13.