Application of acoustic emission and scleroscopy for the analysis of carbon fiber-reinforced plastic samples with different degrees of matrix curing


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Abstract

Samples made of a 1.6 mm thick carbon fiber-reinforced plastic sheet with different curing modes were loaded in the elastic region according to the cantilever bending scheme. Acoustic emission was recorded using an oscilloscope. The microhardness characteristics were used as criteria evaluating the degree of matrix curing which was evaluated on the face surface of the samples and in its cross section at fixed distances from the face surface. Dependences of the frequency, amplitude of acoustic signals, temperature, deflection value and distance to the sample surface on the matrix microhardness were established. The studies showed that the value of matrix microhardness is a relevant criterion evaluating the influence of the mode of carbon fiber-reinforced plastic molding.

About the authors

Е. A. Veshkin

Ulyanovsk Scientific and Technological Center “All-Russian Scientific and Technical Institute of Aviation Materials” of the National Research Center “Kurchatov Institute”

Author for correspondence.
Email: untcviam@viam.ru

Candidate of Science (Engineering), Head of Branch

Russian Federation

S. E. Istyagin

Ulyanovsk Scientific and Technological Center “All-Russian Scientific and Technical Institute of Aviation Materials” of the National Research Center “Kurchatov Institute”

Email: fratos19@mail.ru

Industrial Engineer

Russian Federation

S. G. Kirilin

Ulyanovsk Scientific and Technological Center “All-Russian Scientific and Technical Institute of Aviation Materials” of the National Research Center “Kurchatov Institute”

Email: untcviam@viam.ru

Leading Engineer

Russian Federation

V. V. Semenychev

Ulyanovsk Scientific and Technological Center “All-Russian Scientific and Technical Institute of Aviation Materials” of the National Research Center “Kurchatov Institute”

Email: untcviam@viam.ru

Candidate of Science (Engineering), Chief Research Scientist

Russian Federation

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