Fracture Mechanism and Acoustic Damage Analysis of Thin Materials

Document type: Conference Papers
Peer reviewed: Yes
Full text:
Author(s): Etienne Mfoumou, Sharon Kao-Walter, Claes Hedberg
Title: Fracture Mechanism and Acoustic Damage Analysis of Thin Materials
Conference name: 11th Int. Conf. on Frac.
Year: 2005
Pagination: 1248
Publisher: CCI Centro Cong. Int. s.r.l.
City: Turin
Organization: Blekinge Institute of Technology
Department: School of Engineering - Dept. of Mechanical Engineering (Sektionen för teknik – avd. för maskinteknik)
School of Engineering S- 371 79 Karlskrona
+46 455 38 50 00
http://www.bth.se/ing/
Authors e-mail: xemf@bth.se, skw@bth.se, che@bth.se
Language: English
Abstract: The fracture behavior of paper board (100 μm) used in food packaging material is studied. The plane stress fracture toughness is measured based on a centered crack panel. Different crack sizes have been tested. A compromise (crack length) was found, at which Strip Yield Model as well as Linear Elastic Fracture Mechanics allow the validation of experimental results. Meanwhile, accurate results are obtained using the Strip Yield Model with a geometric correction.
Besides, detection of damage in food packaging material is an interesting feature in quality control of the product. Therefore the material is investigated using an acoustic method. The method consists of a vibration-based damage assessment and leads to a first level differentiation between damaged and non-damaged specimens.
The fracture behavior of paper board (100 μm) used in food packaging material is studied. The plane stress fracture toughness is measured based on a centered crack panel. Different crack sizes have been tested. A compromise (crack length) was found, at which Strip Yield Model as well as Linear Elastic Fracture Mechanics allow the validation of experimental results. Meanwhile, accurate results are obtained using the Strip Yield Model with a geometric correction.
Besides, detection of damage in food packaging material is an interesting feature in quality control of the product. Therefore the material is investigated using an acoustic method. The method consists of a vibration-based damage assessment and leads to a first level differentiation between damaged and non-damaged specimens.
Subject: Mechanical Engineering\General
Mechanical Engineering\Structural Mechanics
Mechanical Engineering\Structural Dynamics
Keywords: Paper, Acoustic damage, fracture
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