Method of obtaining dynamic stress intensity factor by measuring crack mouth opening displacement on a 3-point bending specimen

Document type: Conference Papers
Peer reviewed: Yes
Author(s): Yayu Huang, Xiang Ping Hu, Yujie Shen, Taohong Liao
Title: Method of obtaining dynamic stress intensity factor by measuring crack mouth opening displacement on a 3-point bending specimen
Journal: Lecture Notes in Electrical Engineering
Conference name: International Conference on Electrical, Information Engineering and Mechatronics, EIEM
Year: 2012
Volume: 138
Pagination: 1269-1275
ISBN: 978-144712466-5
ISSN: 1876-1100
Publisher: Springer
City: Jiaozuo, Henan
URI/DOI: 10.1007/978-1-4471-2467-2_150
Organization: Blekinge Institute of Technology
Department: School of Engineering - Dept. of Mechanical Engineering (Sektionen för ingenjörsvetenskap - avd. för maskinteknik)
School of Engineering S- 371 79 Karlskrona
+46 455 38 50 00
http://www.bth.se/ing/
Language: English
Abstract: This paper focuses on how to obtain the Dynamic Stress Intensity Factor by measuring Crack Mouth Opening Displacement on a pre-cracked 3-Point Bending Specimen. During the experiments, one uses impactor to hit on a pre-crack 3-Point Bending Specimen and at the same time uses a high-speed camera to take a set of photos of the crack. Crack Mouth Opening Displacement can then be measured from these photos. According to the relationship of J integral, Crack Open Mouth Displacement and the Dynamic Stress Intensity Factor, the Dynamic Stress Intensity Factor could be obtained. This result could be useful for guiding the practical engineering design.
Subject: Mechanical Engineering\Structural Dynamics
Keywords: 3-point bending specimen; Crack mouth opening displacement; Dynamic stress intensity; J integral
Note: Jiaozuo, Henan;23 December 2011through25 December 2011
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