Detection of structural damages by jerk-dot sensors

Akira Sone, Arata Masuda, Takashi Matsuura, Takahiko Yamamura, Makoto Yamada, Sizuo Yamamoto

Research output: Contribution to journalArticle

Abstract

In this paper, a jerk-dot sensor, which measures the second derivative of the acceleration, is developed. Its capability of detect the local damage in structural members is investigated through lowcycle fatigue tests, which prove its significant sensitivity to the abnormal responses due to the development of macroscopic damages. Further fracture tests are carried out to obtain the correlation between the measured jerk-dot and the crack depth, which suggests that this sensor could provide an early alert before the crack grows up the fatal stage compared with AE sensor and accelerometer.

Original languageEnglish
Pages (from-to)1318-1323
Number of pages6
JournalNippon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
Volume70
Issue number5
Publication statusPublished - 2004 May 1

Keywords

  • Accelerometer
  • Acoustic emission sensor
  • Cantilever
  • Damage detection
  • Health monitoring
  • Jerk-dot-sensor
  • Low-cycle fatigue

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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