|Table of Contents|

Fatigue test of structural part of airfoil(PDF)

《交通运输工程学报》[ISSN:1671-1637/CN:61-1369/U]

Issue:
2012年06期
Page:
55-62
Research Field:
载运工具运用工程
Publishing date:

Info

Title:
Fatigue test of structural part of airfoil
Author(s):
ZHANG Yong-fang1;  LIU Xu2;  FENG Xue3;  LU Yan-jun2
1. School of Printing and Packaging Engineering, Xi'an University of Technology, Xi'an 710048, Shaanxi, China; 2. School of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, Xi'an 710048, Shaanxi, China; 3. School of Aerospace, Tsinghua University, Beijing 100084, China
Keywords:
structural part of airfoil;  fatigue damage;  crack detection;  life prediction
PACS:
V215.5
DOI:
-
Abstract:
Under the alternating loads, the strain gauges were arranged on the test pieces' surfaces of airfoil web, the stresses and strains of test pieces were recorded, and the sizes and positions to fatigue damage in the test pieces were detected by X-rays. The positions and damage severities of test pieces were determined, and the crack growth lifes of airfoil structural parts were predicted. Test result shows that the fatigue lifes of test pieces are approximate one million cycles under 40 kN sinusoidal alternating compression load, and they are in good agreement with the expected distribution of fatigue life(ten thousand-one million cycles). The stresses and strains from fatigue test and theory calculation are similar in variation trends, and the errors are about 10%. The high load and the moment around x axis cause the rivet failure and sheet fracture of test pieces, and the predicted fatigue crack growth life is 10 183 cycles. 1 tab, 22 figs, 20 refs.

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Last Update: 2012-12-30