EFFECTS OF SPECTRUM VARIATIONS ON FATIGUE CRACK-GROWTH

被引：10

作者：

LANCIOTTI, A

LAZZERI, L

机构：

[1] Department of Aerospace Engineering, University of Pisa, 56126 Pisa, Via Diotisalvi

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 1992年 / 14卷 / 05期

关键词：

CRACK PROPAGATION; SPECIMEN LOADING; OMISSION; TRUNCATION; TENSILE MODE; SHEAR MODE;

D O I：

10.1016/0142-1123(92)90483-S

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The definition of the load spectrum for the full-scale fatigue test of a new aircraft is a very delicate problem: among others, two important aspects are those concerning the maximum load and the minimum load range to be included in the sequence. The present paper describes the results of an experimental programme carried out in support of the certification of the Piaggio P.180 aircraft. The effects on crack propagation of truncating high loads and of omitting small cycles are discussed and compared with similar results in the literature. The test results are compared with analytical predictions, obtained by using a simple closure model. Finally, a number of observations about tensile mode/shear mode transition are made.

引用

页码：319 / 324

页数：6