Reliability analysis on fatigue Strength for Certification of Aircraft Composite Structures

다국어 초록 (Multilingual Abstract)

Reliability of fatigue strength on Aircraft Composites(GFRP) Structures was assessed in this paper. Fatigue strength of GFRP was used through the existing fatigue test data with Monte Carlo method. The S_a-N_f curve of composites fatigue strength was assumed as normal distribution and reliability was analyzed using SSIT model. Fatigue stress was designed IAW ASTM F3114-15 with special safety factor of S_sf=1.2~2.0. Reliability was calculated by analytic method and FORM. Sensitivity for the effect of mean and standard deviation of fatigue strength as well as fatigue stability was evaluated. This result can be usefully applied to reliability and fatigue design for composite structures of light weight aircraft.

참고문헌 (Reference)

1 Chantal Fualdes, "Transport Airplane Metallic and Composite Structures Working Group Recommendation Report to FAA" Transport Airplane Metallic and Composite Structures Working Group of FAA 2018

2 Disney, R. L., "The Determination of the Probability of Failure by Stress/Strength Interference Theory" 417-422, 1968

3 XIE Jian, "Study on Airworthiness Requirements of Composites Aircraft for Transport Category Aircraft in FAA" 17 : 270-278, 2011

4 Rosenblatt Transformation, "Structural Reliability Analysis and Prediction" 2018

5 Raif Sakin, "Statistical analysis of bending fatigue life data using Weibull distribution in glass fiber reinforced polyester composites" 29 : 1170-1181, 2008

6 Rosenblatt, M., "Remarks on a Multivariate Transformation" 23 : 470-472, 1952

7 Choi, C. H., "Reliability Application of re manufacturing for Military Industry" 2015 (2015): 1784-1811, 2015

8 Youn Byeng Dong, "Probabilistic Engineering analysis Time independent Performance" SNU 51-76, 2017

9 DOT, "Probabilistic Design Methodology Composite Aircraft Structures" 1999

10 FAA, "Part 23, Small Airplane Certification Process study"

11 Yan Gang Zhao, "Moment method for structural reliability" 23 : 47-75, 2001

12 Xiaoping Du, "First Order and Second Reliability Methods" University of Missouri 1-33, 2005

13 Zhaofeung Huang, "Extension of Stress and Strength Interference Theory for Conceptual Design for Reliability" 131 : 071001-071011, 2002

14 Choi, C. H., "Development of Aft Fuselage and Tail Rotor for Korean Helicopter Program(KHP)" 1104-1107, 2005

15 DOT, "Determination fatigue life of Composites Aircraft Structures Using Life and Load Enhancement Factors" 2011

16 Choi, C. H., "Damage Tolerance Design and Assessment for Composite Structures of Aircraft" ADD 2006

17 Cornell, C. A., "Bounds on the Reliability of Structural Systems" ASCE 93 (93): 1967

18 Choi, C. H., "Application Methodology of Composites Material for KHP" 136-139, 2006

19 Kyung K. Choi, "An Investigation of Nonlinearity of Reliability Based Design Optimization Approachs" 2002

20 "ASTM F3114 15, Standard Specification for Structures"

21 FAA, "AC No. 20 107B, Advisory Circular, Aircraft Composites Structure"

22 Jae hyun Jo, "A Study on the NDI Process Approval of Wet Lay up Composite Parts" 2019