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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 1999, Vol. 20 ›› Issue (2): 190-192.

HYPOTHESIS ABOUT MACRO CRACK FATIGUE PROPAGATION CHARACTERISTICS

Han Yulin

Measurement and Testing Department, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016

Received:1998-05-20 Revised:1998-05-20 Online:1999-04-25 Published:1999-04-25

Abstract

Abstract:

A hypothesis about macro crack fatigue propagation characteristics is presented.The hypothesis proposes that macro crack fatigue propagation can show two kinds of opposite characteristics, non deterministic and deterministic, if macro crack fatigue propagation data are analyzed by different ways.A graphical analysis method is developed in this paper.Then the method is used to analyze 16 sets of macro crack fatigue propagation experiment data of 16MnR steel plate.The analysis results verified the hypothesis.

Key words: fat igue, macro-crack, cr ack pr opagation, non-determinacy, determinacy

CLC Number:

TG111.8

Han Yulin. HYPOTHESIS ABOUT MACRO CRACK FATIGUE PROPAGATION CHARACTERISTICS[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 1999, 20(2): 190-192.

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HYPOTHESIS ABOUT MACRO CRACK FATIGUE PROPAGATION CHARACTERISTICS

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