Fatigue behaviour characterization of the fibre-matrix interface

1989 ◽  
Vol 24 (10) ◽  
pp. 3616-3620 ◽  
Author(s):  
R. A. Latour ◽  
J. Black ◽  
B. Miller
Keyword(s):  
Fatigue Behaviour ◽  
Matrix Interface ◽  
Fibre Matrix

scholarly journals THE FATIGUE BEHAVIOUR OF GFRP BARS - EXPERIMENTAL STUDY

2019 ◽  
Vol 22 ◽  
pp. 38-47 ◽  
Author(s):  
Ondřej Januš ◽  
František Girgle ◽  
Iva Rozsypalová ◽  
Vojtěch Kostiha ◽  
Lenka Bodnárová ◽  
...  
Keyword(s):  
Fatigue Loading ◽  
Fatigue Behaviour ◽  
Interlaminar Shear Strength ◽  
Experimental Program ◽  
Matrix Interface ◽  
Interface Damage ◽  
Gfrp Bars ◽  
Interlaminar Shear ◽  
Fibre Matrix

The paper describes an experimental program for studying the fatigue performance of GFRP bars, which has been initiated by the authors. Two different test configurations were used to assess the fatigue behaviour. The bare specimens were tested within the first series. A modified gripping system was used to reduce eccentricity when the bar was not directly fixed. However, the boundary conditions seem to affect the results. The second series consisted of a set of specimens of bars embedded in concrete. This configuration seems appropriate for determination of fatigue life of GFRP bars. Two S-N curves for bare bars and bars embedded in concrete were created and compared. Significant reduction of interlaminar shear strength at the beginning of fatigue loading proved matrix or fibre/matrix interface damage.

Fibre-Matrix Interface Development during High Temperature Exposition of Long Fibre Reinforced SiOC Matrix

2013 ◽  
Vol 592-593 ◽  
pp. 401-404
Author(s):  
Zdeněk Chlup ◽  
Martin Černý ◽  
Adam Strachota ◽  
Martina Halasova ◽  
Ivo Dlouhý
Keyword(s):  
High Temperature ◽  
Crack Formation ◽  
Fracture Behaviour ◽  
Point Of View ◽  
Reinforced Composites ◽  
Matrix Interface ◽  
Significant Damage ◽  
The Matrix ◽  
Fibre Matrix ◽  
Fibre Reinforced Composites

The fracture behaviour of long fibre reinforced composites is predetermined mainly by properties of fibre-matrix interface. The matrix prepared by pyrolysis of polysiloxane resin possesses ability to resist high temperatures without significant damage under oxidising atmosphere. The application is therefore limited by fibres and possible changes in the fibre matrix interface. The study of development of interface during high temperature exposition is the main aim of this contribution. Application of various techniques as FIB, GIS, TEM, XRD allowed to monitor microstructural changes in the interface of selected places without additional damage caused by preparation. Additionally, it was possible to obtain information about damage, the crack formation, caused by the heat treatment from the fracture mechanics point of view.

Fracture toughness of the fibre-matrix interface in glass-epoxy composites

1996 ◽  
Vol 31 (23) ◽  
pp. 6145-6153 ◽  
Author(s):  
A. Pegoretti ◽  
M. L. Accorsi ◽  
A. T. Dibenedetto
Keyword(s):  
Fracture Toughness ◽  
Epoxy Composites ◽  
Matrix Interface ◽  
Fibre Matrix

Analysis of Residual Stresses and Distortions in Brazed Joints of Cemented Carbide and Steel

2005 ◽  
Vol 490-491 ◽  
pp. 491-496 ◽  
Author(s):  
A. Ottlik ◽  
Volker Schulze ◽  
L. Pintschovius ◽  
Hermann Müller ◽  
Detlef Löhe
Keyword(s):  
Residual Stresses ◽  
Fatigue Behaviour ◽  
Complex Stress ◽  
Cemented Carbide ◽  
Experimental Characterization ◽  
Fem Simulations ◽  
X Ray ◽  
Brazed Joints ◽  
Stress States

Brazing of cemented carbides to steel bodies gives rise to the development of complex stress states and distortions which influence the fatigue behaviour of the parts. It is quite important to estimate the residual stresses with numerical methods whose agreement is to be guaranteed with experimental characterization of the brazed parts. In this work FEM simulations and X-ray as well as neutron stress analysis were used to examine the residual stresses of brazed samples. Joints with different geometries and dimensions made of cemented carbide and different steels showing different phase transformation behaviours were investigated.

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