Utilization of Scanning Acoustic Microscope (SAM) to prove the existence of stress relaxation in woven composite

Mohammadsadegh Saadatzi, Hossain Ahmed, Subir Patra, Sourav Banerjee

Research output: Contribution to book or proceedingConference articlepeer-review

2 Scopus citations

Abstract

Nonlinear ultrasonic techniques have shown the prominent potential for assessing progressive damage occurred in the composite materials in their fatigue life cycles. Stress relaxation in composite material is being measured in two ways, in-situ analysis (on-line technique) using Lamb waves and Off-line technique using pressure wave (Scanning Acoustic Microscope). In this article, the progressive damage was investigated by a set of fatigue loading experiments on woven composite samples followed by a specific duration of stress relaxation in room temperature condition. A quantitative measure of stress relaxation is determined using Scanning Acoustic Microscope for a fatigue cycle of 225000 with the loading frequency of 10 Hz. To prove this claim, a well-established reduced order nonlinear state of Lamb wave due to stress-relaxation was compared with SAM data analysis. A good agreement between these two techniques is reported herein.

Original languageEnglish
Title of host publicationSmart Structures and NDE for Energy Systems and Industry 4.0
EditorsNorbert G. Meyendorf, Kerrie Gath, Christopher Niezrecki
PublisherSPIE
ISBN (Electronic)9781510626010
DOIs
StatePublished - 2019
EventSmart Structures and NDE for Energy Systems and Industry 4.0 2019 - Denver, United States
Duration: Mar 4 2019Mar 5 2019

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10973
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceSmart Structures and NDE for Energy Systems and Industry 4.0 2019
Country/TerritoryUnited States
CityDenver
Period03/4/1903/5/19

Scopus Subject Areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Keywords

  • Fatigue Loading.
  • Lamb Waves
  • Relaxation
  • SHM
  • Ultrasonic
  • Woven Composite

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