Journal Published Online: 10 April 2019
Volume 48, Issue 2

Prediction of Crack Depth and Fatigue Life of an Acrylonitrile Butadiene Styrene Cantilever Beam Using Dynamic Response

CODEN: JTEVAB

Abstract

In this article, a methodology is proposed that can be used to predict the crack growth and fatigue life of a cantilever beam made of Acrylonitrile Butadiene Styrene (ABS) manufactured with fused deposition modeling. Three beam configurations based on length (L = 110, 130, and 150 mm) are considered. Empirical relationships are formulated between the natural frequency and the crack growth. The analytical and experimental results are found to be in good agreement for all configurations. Using the experimental data, a global relation is formulated for the crack depth prediction. This global relation is useful for an in situ crack depth prediction with an error of less than 10 %. Later, a residual fatigue life of these specimens is compared with a metallic structure (Aluminum 1050) of similar configuration available in the literature. It is found that the ABS material has more residual fatigue life compared with the metallic structure at the same frequency drop. Based on the remaining fatigue life, ABS material can be a potential material to manufacture machine components under cyclic loads.

Author Information

Zai, Behzad Ahmed
Department of Engineering Sciences, Pakistan Navy Engineering College, National University of Sciences and Technology, Karachi, Pakistan
Khan, Muhammad A.
School of Aerospace, Transport and Manufacturing, Cranfield University, Cranfield, UK
Khan, Sohaib Z.
Department of Mechanical Engineering, Islamic University of Madinah, Madinah, Saudi Arabia
Asif, Muhammad
Department of Mechanical Engineering, Auckland University of Technology, Auckland, New Zealand
Khan, Kamran A.
Department of Aerospace Engineering, Khalifa University, Abu Dhabi, United Arab Emirates
Saquib, Ahmad N.
Department of Mechanical Engineering, Islamic University of Madinah, Madinah, Saudi Arabia
Mansoor, Asif
Department of Engineering Sciences, Pakistan Navy Engineering College, National University of Sciences and Technology, Karachi, Pakistan
Shahzad, Majid
Advanced Material Research Division, Pakistan Space and Upper Atmosphere Research Commission, SUPARCO, Karachi, Pakistan
Mujtaba, Ahmed
Department of Engineering Sciences, Pakistan Navy Engineering College, National University of Sciences and Technology, Karachi, Pakistan
Pages: 17
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Stock #: JTE20180674
ISSN: 0090-3973
DOI: 10.1520/JTE20180674