Effect of Matrix Resin Characteristics on the Fracture Behavior for Plain-Woven Carbon Fiber Reinforced Plastics fabricated by Vacuum Assisted Resin Transfer Molding
TL;DR: In this article, acoustic emission measurement has been used to investigate microscopic failures and damage progress in carbon fiber reinforced plastics (CFRP), and AE measurements were conducted on the reinforced plastic.
Abstract: Acoustic emission (AE) measurement has been used to investigate microscopic failures and damage progress in carbon fiber reinforced plastics (CFRP). In this work, AE measurements were conducted on ...
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TL;DR: In this article, the authors investigated failure in Carbon Fibre Reinforced Plastics CFRP using Acoustic Emission (AE) signals collected and post-processed for various test configurations: tension, Compact Tension (CT), Compact Compression (CC), Double Cantilever Beam (DCB), and four-point bend End Notched Flexure (4-ENF).
457 citations
"Effect of Matrix Resin Characterist..." refers background in this paper
...[4] classified the failure types for unidirectional CFRP during tensile tests, compression tests, and four-point bending tests according to the peak frequency of the AE signals....
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TL;DR: In this article, the authors adopted the acoustic emission technique to study the failure mechanisms and damage evolution of carbon fiber/epoxy composite laminates, and studied the effects of different lay-up patterns and hole sizes on the acoustic response.
177 citations
"Effect of Matrix Resin Characterist..." refers background in this paper
...[5] investigated the relationship between amplitude and damage form with the tensile tests on CFRP having a circular hole....
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TL;DR: In this paper, an unsupervised pattern recognition procedure is applied to identify damage mechanisms from acoustic signals, and a spatial and time analysis of acoustic events and heat sources is developed and some correlation range in the acoustic and IT events amplitude are identified.
Abstract: Acoustic emission (AE) and infrared thermography (IT) are simultaneously combined to identify damage evolution in carbon fibre reinforced composites. Samples are subjected to tensile static loads while acoustic emission sensors and an infrared camera record the acoustic signals and the temperature variations respectively. Unsupervised pattern recognition procedure is applied to identify damage mechanisms from acoustic signals. Thermodynamic arguments are introduced to estimate global heat source fields from thermal measurements and anisotropic heat conduction behavior is taken into account by means of homogenization technique. A spatial and time analysis of acoustic events and heat sources is developed and some correlation range in the AE and IT events amplitude are identified.
102 citations
"Effect of Matrix Resin Characterist..." refers methods in this paper
...[7] conducted the tensile test using an infrared thermographic measurement coupled with the AE technique....
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TL;DR: In this paper, acoustic emission analysis is used to investigate microscopic damage mechanisms and damage progress in unidirectional glass and carbon fiber reinforced composites, and the influence of fiber orientation on damage initiation and propagation is determined.
Abstract: Acoustic emission analysis is used to investigate microscopic damage mechanisms and damage progress in unidirectional glass and carbon fibre reinforced composites. Under static loading the influence of fibre orientation on damage initiation and propagation is determined. A novel polyurethane matrix system significantly enhances material performance in terms of crack initiation load levels, crack growth, damage tolerance and off-axis tensile strength. Hysteresis measurements during stepwise increasing dynamic load tests highlight the effect of fibre–matrix-adhesion and resin fracture toughness in unidirectional 0° fibre reinforced composites. Acoustic detection of beginning fibre breakage correlates with a significant increase of loss work per cycle.
77 citations
TL;DR: In this paper, the fracture process of single-edge-notched (SEN) laminated composites with different lay-up configurations and different fiber composite systems based on the behavior of high amplitude acoustic emission (AE) signals was analyzed.
65 citations