Wang, Ben published the artcileEstimating self-healing capability of carbon fiber/epoxy composites using ultrasonic guided wave, Synthetic Route of 7575-23-7, the main research area is epoxy carbon fiber composite ultrasonic guided wave self healing.
In this work, two types of self-healing composite laminates with embedded 6 and 12 weight% microcapsules resp., were prepared The guided waves were activated and captured using piezoelec. transducer in a pitch-catch approach. Mode I interlaminar fracture tests were conducted using double cantilever beam specimens, and the effects of concentration of microcapsules on the interlaminar properties of specimens were investigated. The interlaminar fracture surfaces of self-healing specimens were observed to support the anal. of mech. tests and guided wave detecting results. The results show that the self-healing efficiency of specimens with high-concentration microcapsules is less than that of specimens with low-concentration microcapsules. Meanwhile, low-concentration microcapsules reduce the interlaminar properties of specimens. Two guided-wave parameters, namely signals peak value and waveform similarity, were set and correlated with the self-healing capability of specimens. When the specimens were damaged, the peak value of response signals decreases, and the waveform difference between the response signal and reference signal becomes larger. When the specimens were healed, the peak value of response signals rises, and the waveform difference between them becomes smaller.
Polymer Testing published new progress about Carbon fibers Role: MOA (Modifier or Additive Use), USES (Uses) (T 300). 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Synthetic Route of 7575-23-7.
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