Glass Fiber-Reinforced Plastic Composite Acoustic Emission Signal Detection and Source Localization

2017 ◽  
pp. 163-174
Author(s):  
Qiang Wang ◽  
Xiaohong Gu ◽  
Xinwei Fan ◽  
Rongyao Ye
Keyword(s):  
Acoustic Emission ◽  
Signal Detection ◽  
Glass Fiber ◽  
Source Localization ◽  
Acoustic Emission Signal ◽  
Glass Fiber Reinforced Plastic ◽  
Emission Signal ◽  
Plastic Composite ◽  
Glass Fiber Reinforced ◽  
Reinforced Plastic

Investigation of Nanomechanical Properties of the Interphase in a Fiber Reinforced Plastic Composite

2001 ◽  
Author(s):  
Sanjeev K. Khanna ◽  
Robb M. Winter ◽  
P. Ranganathan ◽  
S. B. Yedla ◽  
K. Paruchuri
Keyword(s):  
Elastic Modulus ◽  
Glass Fiber ◽  
Fiber Reinforced ◽  
Two Phase ◽  
Glass Fiber Reinforced Plastic ◽  
Fiber Reinforced Plastic ◽  
Plastic Composite ◽  
Atomic Force ◽  
Glass Fiber Reinforced ◽  
Reinforced Plastic

Abstract Glass fiber reinforced plastic composites are widely used as structural materials. These two phase materials can be tailored to suit a large variety of applications. A better understanding of the properties of the fiber-matrix ‘interphase’ can enable more optimum design of composites. The interphase is a microscopic region around the fiber and hence nano-scale investigation using nano-indentation techniques is appropriate to determine mechanical property variations. In this study the atomic force microscope with the Hysitron indenter has been used to determine the variation of the elastic modulus across the interphase for different silane coated glass fiber reinforced polyester composites. A comparative study of the elastic modulus variation in the interphase is reported. The results are discussed in the light of the current limitations of the instrumentation and analysis.

Electron Beam Moire´ Study of Fracture of a Glass Fiber Reinforced Plastic Composite

1994 ◽  
Vol 61 (2) ◽  
pp. 402-409 ◽  
Author(s):  
D. T. Read ◽  
J. W. Dally
Keyword(s):  
Electron Beam ◽  
Glass Fiber ◽  
Local Strains ◽  
Glass Fiber Reinforced Plastic ◽  
Fiber Reinforced Plastic ◽  
Plastic Composite ◽  
Glass Fiber Reinforced ◽  
Reinforced Plastic ◽  
Fringe Patterns ◽  
Electron Beam Moiré

Using the method of electron beam moire´, a small region at an interface of a [O2/ 90]s glass fiber reinforced plastic composite has been examined during tensile testing. The tensile test was conducted inside a scanning electron microscope, with a high spatial frequency line grating (10,000 lines/mm) at the interface between a longitudinal ply and a transverse ply. During the test, this region was observed at a magnification of 1900 × . Local strain measurements were made by interpreting the moire´ fringe patterns over gage lengths that varied from 10 to 30 μm. The magnitude and distribution of the local strains depended on the damage that occurred with monotonically increasing load. Load shedding by the transverse ply was evident from the fringe patterns. Extremely high local strains were observed: longitudinal fiber strains up to three percent, normal strains up to three percent, and shear strains up to 40 percent in the epoxy matrix.

Sign in / Sign up

Export Citation Format

Share Document