Assessing micromechanical behaviour of PET cords in rubber matrix composites by laser Raman microscopy

2013 ◽  
Vol 85 ◽  
pp. 104-110 ◽  
Author(s):  
Maria Giovanna Pastore Carbone ◽  
John Parthenios ◽  
Georgia Tsoukleri ◽  
Salvatore Cotugno ◽  
Giuseppe Mensitieri ◽  
...  
Keyword(s):  
Raman Microscopy ◽  
Rubber Matrix ◽  
Matrix Composites ◽  
Laser Raman

Direct measurement of fiber bridging in notched glass-ceramic-matrix composites

2006 ◽  
Vol 21 (5) ◽  
pp. 1150-1160 ◽  
Author(s):  
Konstantinos G. Dassios ◽  
Costas Galiotis
Keyword(s):  
Shear Strength ◽  
Interfacial Shear Strength ◽  
Ceramic Matrix Composites ◽  
Interfacial Shear ◽  
Matrix Composites ◽  
Fiber Failure ◽  
Laser Raman ◽  
Notch Length ◽  
The Difference ◽  
Bridging Fibers

A novel, high-resolution remote Raman microscope was used for the direct in situ assessment of deformation on bridging fibers in a double-edge-notched SiC-Nicalon reinforced ceramic-glass matrix composite at various stages of monotonic tensile loading. The effect of notch length on the bridging strain profiles obtained by individually probing a large number of fibers across the bridged ligament of the composite was investigated. Bridging strain measurements in the microscale are used to identify the role and sequence of the failure micromechanisms developing within the bridging zone and are compared with their macromechanically derived counterparts. The difference of 25% in failure strain between the as-received fiber and the maximum value obtained on composite-fibers through laser Raman microscopy (LRM), is attributed to the different patterns of fiber failure in composites as compared to the techniques used for fibers characterization such as monofilament and bundle testing in air. This article demonstrates how the LRM-strain data can be utilized to obtain a direct, microscale measure of the interfacial-shear strength of the composite. The obtained interfacial shear strength (ISS) value of 7 MPa compares well with the macromechanically predicted value and offers a much higher precision compared to other experimental techniques.

scholarly journals Microstructural Characterization of Cast Magnesium Matrix Composites by Raman Microscopy

2013 ◽  
Vol 13 (1) ◽  
pp. 95-98 ◽  
Author(s):  
M.A. Malika ◽  
K. Majchrzak ◽  
K.N. Braszczyńska-Malik
Keyword(s):  
Silicon Carbide ◽  
Microstructural Characterization ◽  
Raman Microscopy ◽  
Matrix Composites ◽  
Magnesium Matrix ◽  
Magnesium Matrix Composites ◽  
Silicon Carbide Particles ◽  
Cast Magnesium ◽  
Carbide Particles

Abstract Cast magnesium matrix composites reinforced with silicon carbide particles were investigated by using Raman microscopy. 3C, 4H and 6H polytypes of SiC particles were identified in the investigated composites. Additionally, Mg2Si compound was detected by Raman microscopy in the composites microstructure.

Raman Spectra of Hydrocarbon in Returned Drilling Fluid Using Co-Focal Laser Raman Microscopy

2012 ◽  
Vol 616-618 ◽  
pp. 715-719
Author(s):  
Ming Ming Tang ◽  
Jin Liang Zhang
Keyword(s):  
Raman Spectra ◽  
Drilling Fluid ◽  
Potential Method ◽  
Raman Microscopy ◽  
Hydrocarbon Detection ◽  
Laser Raman ◽  
Drilling Performance ◽  
Water Based

Hydrocarbon detection while drilling (HDWD) is important for obtain proper drilling performance. In this report, Raman spectra for hydrocarbon in returned water based drilling fluid have been acquired using He-Ne laser (633nm) excitation. The relative intensities of several Raman bands are found to depend on the concentration of hydrocarbon in returned drilling fluid. Spectra are interpreted as indicating that Raman spectra could be used as potential method for HDWD.

Effects of fibre-surface morphology on the mechanical properties of Porifera-inspired rubber-matrix composites

2013 ◽  
Vol 111 (4) ◽  
pp. 1031-1036 ◽  
Author(s):  
Parvez Alam ◽  
Daniela Graf Stillfried ◽  
Jessika Celli ◽  
Martti Toivakka
Keyword(s):  
Mechanical Properties ◽  
Surface Morphology ◽  
Fibre Surface ◽  
Rubber Matrix ◽  
Matrix Composites
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