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Thursday, July 23, 2020 | History

4 edition of Time-dependent fracture of adhesive joints found in the catalog.

Time-dependent fracture of adhesive joints

Derek Plausinis

Time-dependent fracture of adhesive joints

by Derek Plausinis

  • 229 Want to read
  • 16 Currently reading

Published by National Library of Canada in Ottawa .
Written in English


Edition Notes

Thesis (M.A.Sc.) -- University of Toronto, 1994.

SeriesCanadian theses = -- Thèses canadiennes
The Physical Object
FormatMicroform
Pagination2 microfiches : negative. --
ID Numbers
Open LibraryOL17055564M
ISBN 100315961988
OCLC/WorldCa46523050

On the other hand, bonded joints tend to be damage-tolerant due to the high damping behavior of the adhesive layer and less expensive due to lower fabrication cost. The use of adhesives increases the joint strength, distributes the loads more evenly, and enables alternative jointing methods to Cited by: Physical stresses may also cause the separation of surfaces. When subjected to loading, debonding may occur at different locations in the adhesive joint. The major fracture types are the following: Cohesive fracture. Cohesive fracture is obtained if a crack propagates in the bulk polymer which constitutes the adhesive. In this case the surfaces of both adherends after debonding will be covered by fractured adhesive.

Temperature Dependence of the Fracture Toughness of Adhesively Bonded Joints Article in Journal of Adhesion Science and Technology 24(11) August .   The mechanics of fracture are explained, emphasizing elastic-plastic and time-dependent fracture mechanics. Applications are presented, using examples from power generation, aerospace, marine, and chemical industries, with focus on predicting the remaining life of structural components and advanced testing metods for structural materials.

Fracture mechanics of adhesive bonds. Test samples were broken using a servo-hydraulic test ma-chine to study the fracture of adhesive joints at different test rates and to help develop an. toughened adhesive joints. Finite element analysis (FEA) was used to establish the effects of these parameters on the joint stiffness, stress and strain distributions within the adhesive layer, and joint strength. A series of simulated experiments using FEA were conducted onFile Size: KB.


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Time-dependent fracture of adhesive joints by Derek Plausinis Download PDF EPUB FB2

This book reviews recent research in the field of fatigue and fracture of adhesively-bonded composite joints. The first part of the book discusses the experimental investigation of the reliability of adhesively-bonded composite joints, current research on understanding damage mechanisms, fatigue and fracture, durability and ageing as well as.

A design method accounting for the time-dependent fracture of structural adhesive joints is proposed. For both a mineral-filled epoxy and a rubber-toughened epoxy, it is demonstrated that a wedge test may be used to estimate an effective threshold energy release rate for no crack growth in planar structural adhesive joints under the full range of mode by: Section C: Weathering of Adhesive Joints and Life Time Prediction CHAPTER C.1 Adhesive Application Under High‐power Ultrasound: Effects on Durability (Pages: ).

Rakestraw MD et al. () Time dependent crack growth and loading rate effects on interfacial and cohesive fracture of adhesive joints. J Adhesion – Google Scholar River BH et al.

() Adhesive joint fracture behaviour during setting and by: 6. The book focuses on the methodology used for fabricating and testing adhesive and bonded joint specimens. The text covers a wide range of test methods that are used in the field of adhesives, providing vital information for dealing with the range of adhesive properties that are of interest to the adhesive community.

Quasi‐Static Fracture Tests: Double Cantilever Beam and Tapered Double Cantilever Beam Testing. End‐Notched Flexure. Mode II Fracture Characterization of Bonded Joints Using the ELS Test. The Notched Torsion Test to Determine the Mode III Fracture Properties of Adhesives.

Other Mixed Mode Adhesive Fracture Test SpecimensCited by: 4. need for mixed-mode fracture characterisation becomes unavoidable. Many researchers have used a range of experimental techniques to characterise mode I, mode II and mixed mode I/II fracture of adhesive joints and composite laminates, but none of these approaches [e.g.

] provide a method of. Fracture Analysis of Adhesive Joints using the Finite Element Method The behaviour of adhesive joints have been investigated. Two different adhesive/adherent In order to describe fracture of the adhesive a specially designed finite element, holding a cohesive zone, was introduced.

Two different cohesive models were considered. The two File Size: KB. The design of adhesively bonded joints is an important task to guarantee structural integrity. Fracture mechanics characterization tests for adhesive joints provide relevant mechanical properties to determine the adhesive toughness.

Toughness is usually expressed in terms of the critical value for the strain release rate (Gc) which is the energy.

methodologies were available for determining the fracture properties of adhesive joints (Davidson & Lee, ). A companion review (Crocombe and Kinloch, ), a deliverable from Task 3 of this project, discussed the more important adhesive bond failure criteria. Issues relating to testsCited by: 1.

Mixed-Mode Fatigue Testing of Adhesive Joints Measurement of Time-Dependent Crack Growth Curvature Mismatch Fracture Test for Subcritical Debonding OTHER TEST METHODS Thermal Characterization Dynamic Mechanical Analysis with a Vibrating Beam Method Bimaterial Curvature Method for Residual Stress and Thermal Expansion Coefficient DeterminationFormat: Hardcover.

Time Dependent Crack Growth and Loading Rate Effects on Interfacial and Cohesive Fracture of Adhesive Joints. The Journal of Adhesion: Vol.

55, No. pp. Cited by: The book provides engineers and scientists with the technical know-how to simulate a variety of adhesively bonded joints using ANSYS. It explains how to model stress, fracture, fatigue crack propagation, thermal, diffusion and coupled field analysis of the following: single lap, double lap, lap strap/cracked lap shear, butt and cantilevered.

Adhesive fractures - Types of fractures and explanations. Knowledge of different types of failures or fractures that have occurred in a bonded joint plus the use of analytical techniques, which allow us to know the origin and cause of the problem, in order to take remedial action if necessary.

DTIC ADA Time-Dependent Fracture Processes Relating to Service Life Prediction of Adhesive Joints and Advanced Composites. by Defense Technical Information Center.

The role of mechanics in determining the locus of failure in bonded joints is discussed, followed by a chapter on rheology relevant to adhesives and sealants. Pressure sensitive adhesive performance; the principles of tack and tack measurements; and contact mechanics relevant to wetting and surface energy measurements are then covered.

Book Editor(s): Prof. Lucas F. da Silva Faculty of Engineering, University of Porto, Department of Mechanical Engineering, Rua Dr.

Roberto Frias, ‐ Porto, Portugal. A design method accounting for the time-dependent fracture of structural adhesive joints is proposed. For both a mineral-filled epoxy and a rubber-toughened epoxy, it is demonstrated that a wedge test may be used to estimate an effective threshold energy release rate for no crack growth in planar structural adhesive joints under the full range.

The fracture energy, GIc, has been ascertained over a range of test temperatures and rates, both in bulk and in adhesive joints, as a function of specimen : Markus Brede. The focus of the present paper is to discuss the role that locally weakened interfaces in adhesive bonds can have on the fracture behavior of double cantilever beam specimens loaded in both mode I conditions and in mixed (mode I/II) conditions in a dual actuator load frame that permits independent control of Cited by: 1.

Abstract. Adhesive joints usually fail by the initiation and propagation of flaws and, since the basic tenet of continuum fracture mechanics is that the strength of most real solids is governed by the presence of flaws, the application of such theories to adhesive joint failure has received considerable by: D.R.

Moore, J.G. Williams, in European Structural Integrity Society, ABSTRACT. Fixed arm peel and T-peel test procedures are used to measure peel strength for flexible laminates. Analysis of the contributions from elastic and plastic deformations of the peel arms during these tests enables the energy contribution from plastic effects to be subtracted from the energy required to peel the.Schmandt, C.

and Marzi, S. () ‘Effect of crack opening velocity and adhesive layer thickness on the fracture behaviour of hyperelastic adhesive joints subjected to mode I loading’, International Journal of Adhesion and Adhesives, vol. 83, pp.

9–Author: Christopher Schmandt, Stephan Marzi.